AbstractArtemisiatilesii, Seneciolugens, Taraxacumscopulorum (Asteraceae); Crucihimalayabursifolia, Drabafladnizensis, D.juvenilis, D.pilosa, D.simmonsii (Brassicaceae); Carexbigelowiisubsp.bigelowii, Eriophorumrusseolumsubsp.albidum (Cyperaceae); Anthoxanthummonticolasubsp.monticola, Bromuspumpellianus, Deschampsiacespitosasubsp.cespitosa, D.sukatschewii, Festucarubrasubsp.rubra, Loliumperenne, Poapratensissubsp.pratensis (Poaceae); Stuckeniafiliformis (Potamogetonaceae); Potentilla×prostrata (Rosaceae); Galiumaparine (Rubiaceae); and Salixovalifoliavar.ovalifolia . Eight of these are new to the flora of the Canadian Arctic Archipelago: Seneciolugens, Drabajuvenilis, D.pilosa, Anthoxanthummonticolasubsp.monticola, Bromuspumpellianus, Deschampsiacespitosasubsp.cespitosa, Poapratensissubsp.pratensis and Salixovalifoliavar.ovalifolia. One of these, Galiumaparine, is newly recorded for the flora of Nunavut. Four first records for Victoria Island are introduced plants discovered in Cambridge Bay in 2017: three grasses  and Galiumaparine. One taxon, Juncusarcticussubsp.arcticus, is newly recorded from the Northwest Territories. Of the general areas on Victoria Island that have been botanically explored the most, the greatest diversity of vascular plants is recorded in Ulukhaktok (194 taxa) and the next most diverse area is Cambridge Bay (183 taxa). The floristic data presented here represent a new baseline on which continued exploration of the vascular flora of Victoria Island – particularly the numerous areas of the island that remain unexplored or poorly explored botanically – will build.Victoria Island in Canada’s western Arctic is the eighth largest island in the world and the second largest in Canada. Here, we report the results of a floristic study of vascular plant diversity of Victoria Island. The study is based on a specimen-based dataset comprising 7031 unique collections from the island, including some 2870 new collections gathered between 2008 and 2019 by the authors and nearly 1000 specimens variously gathered by N. Polunin (in 1947), M. Oldenburg (1940s–1950s) and S. Edlund (1980s) that, until recently, were part of the unprocessed backlog of the National Herbarium of Canada and unavailable to researchers. Results are presented in an annotated checklist, including keys and distribution maps for all taxa, citation of specimens, comments on taxonomy, distribution and the history of documentation of taxa across the island, and photographs for a subset of taxa. The vascular plant flora of Victoria Island comprises 38 families, 108 genera, 272 species, and 17 additional taxa. Of the 289 taxa known on the island, 237 are recorded from the Northwest Territories portion of the island and 277 from the Nunavut part. Thirty-nine taxa are known on the island from a single collection, seven from two collections and three from three collections. Twenty-one taxa in eight families are newly recorded for the flora of Victoria Island:  Exploration and documentation of the vascular plant flora of the Canadian Arctic Archipelago has been ongoing since the earliest expeditions in search of the Northwest Passage, nearly 200 years ago, during which crew members obtained new scientific information on the natural history of the lands being explored, including collections of plants. Vascular plant specimens have accumulated from across the Archipelago through the decades, variously collected opportunistically or as part of botanical studies by both botanists and non-botanists alike. Many floristic studies of areas of the Canadian Arctic Archipelago have been published, ranging from simple lists of plants to more detailed accounts of plant biodiversity, including information about taxonomy, nomenclature, distribution and ecology . Among tIn contrast to the flora of an area, which is based on presence or absence of species regardless of abundance, vegetation refers to assemblage(s) of plant species, often focused on or characterized by the subset of species that are dominant in ecological communities. Arctic vegetation is responding rapidly to the changing Arctic climate, which is warming at twice the rate of the rest of the planet . ElmendoMany regions of the Canadian Arctic Archipelago remain underexplored or unexplored botanically, given the massive size of the region, the short window of opportunity for making field collections during Arctic summer, the small number of taxonomically trained and oriented Arctic botanists conducting field research, and the great logistical challenges and costs associated with accessing remote Arctic areas . Given tCarexbicolor, Eriophorumbrachyantherum, Luzulawahlenbergii, Corallorhizatrifida, Puccinelliabanksiensis, Stuckeniavaginata, Suaedacalceoliformis, Arenariahumifusa, Arenarialongipedunculata, Sabulinastricta, Andromedapolifolia, Oxytropisdeflexavar.foliolosa, Pinguiculavulgaris and Salixarctophila. We present an annotated checklist of the vascular flora of Victoria Island in which we summarize the history of documentation of the flora and cite all specimens including new reports of first records for the island and many new records of species at sites across the island. We also provide taxonomic keys to identify all taxa currently recorded on the island, distribution maps for all taxa on the island, and photographs of many taxa. This work will serve as a new baseline on which continued floristic exploration of Victoria Island can build.Here, we report the results of a collections-based floristic study of Victoria Island in the western Canadian Arctic Archipelago. Our study synthesizes existing published and unpublished information on the flora of the island, including new results from five field seasons  of botanical collecting at sites across the island. A small subset of collections from our 2008 and 2010 trips, representing first records of the following species for Victoria Island (or first records with confirmed vouchers), were reported in 2), about 3.8% larger than Great Britain, is the eighth largest island in the world and the second largest  in Canada. It is located in the western Canadian Arctic Archipelago  of 9–12, 5–50% cover of vascular plants, herbaceous layer 5–10 cm tall, prostrate and hemiprostrate dwarf shrubs less than 15 cm tall, and 75–150 species in local floras. Subzone D has a mean temperature of 7–9 °C, a summer warmth index of 12–20, 50–80% cover of vascular plants, herbaceous and dwarf shrub layers 10–40 cm tall, and 125–250 species in local floras. The Canadian High Arctic Research Station (CHARS) is currently leading a bioclimatic mapping of Victoria Island project. The goal of the project is to refine and better characterize previously determined boundaries between subzones C and D on the island based on results of fieldwork and aerial surveys.The Circumpolar Arctic Vegetation Map–an international effort to develop a unified terminology for describing global Arctic vegetation–divides the circumpolar Arctic into five bioclimate zones . The zonThe two communities on Victoria Island are located within bioclimate subzone D. Cambridge Bay has a mean annual air temperature of -13.9 °C for the climate normal period of 1981–2010 and the mean annual temperature in July is 8.9 °C and in February is -32.5 °C for the same period . Mean anThe Northwest Territories CHARS; Polar Knowledge Canada) in Cambridge Bay in 2015, new ecological research has been initiated on Victoria Island and the adjacent mainland, including long-term, experiment-based monitoring of the terrestrial ecosystem , a large study area centred around the CHARS campus in Cambridge Bay, including island and mainland areas and the communities of Ulukhaktok, Kugluktuk, Cambridge Bay, Gjoa Haven, Taloyoak and Kugaaruk (CASBEC) initiative aims to develop a standardized approach to classifying, naming, and interpreting Arctic and Subarctic terrestrial ecological communities at a range of scales, based on plant associations . Marine strand lines marking former post-glacial marine limits are conspicuous on the island; nearly half the island was, at one point, submerged. Other marine features in inland areas include marine shells, raised deltas, raised beach ridges, abandoned strand lines and marine sediments. Coastal parts of western Victoria Island are characterized by having large morainal belts that often reach heights of 30 m or higher. Morainal topography is particularly varied on Wollaston Peninsula, attaining maximum height at the summit of Mt. Bumpus. Morainal belts of eastern Victoria Island are much smaller. The island is further characterized by its abundant lakes and rivers, floodplain deposits, alluvial fans and deltas. Pingos are present on southeastern Victoria Island, particularly on Wollaston Peninsula.2. Uvayuq was given its English name, Mount Pelly, by Thomas Simpson and Peter Warren Dease in 1839, honouring then-governor of the Hudson’s Bay Company, John Henry Pelly , British expedition in search of Sir John Franklin’s missing ships Erebus and Terror, and by John Rae in 1851. These collections are housed at the Royal Botanic Gardens Kew , and a collection of Salixarctica, taken at “Mount Adventure” [Adventure Mountain] on Prince Albert Peninsula, is attributed to McClure , two-ship , just west of Wollaston Land, the next day. Rae then travelled eastwards along the southern shore of Victoria Island as far as Wilbank Bay . Upon his return to Douglas Island, on 15 May, he travelled northwards along the west coast of Wollaston Land to ca. 14 miles beyond Cape Baring , before turning around. He returned to the mainland on 2 June. On the second leg of the 1851 expedition, Rae travelled by boat. He left the mouth of the Coppermine River in early July and travelled eastwards along the south shore of Coronation Gulf to the east end of Kent Peninsula. On 27 July he crossed the strait to Victoria Island, reaching Cambridge Bay. Leaving the bay, Rae followed the coast eastwards to Albert Edward Bay, and then travelled north overland on foot to a point ca. seven miles south of Pelly Point  on the Collinson Peninsula, before turning around. On the return trip Rae apparently followed the southern coast of Victoria Island, as he describes stopping north-east of Cape Peel  along Dease Strait and Point Ross , at Kookyoak River [=Kuujjua R.] and at Cambridge Bay (CAN). In 1948, John L. (Pete) Jenness, son of Diamond Jenness, made a few collections in the vicinity of Richard Collinson Inlet and on the Storkerson Peninsula.Considerable plant exploration of Victoria Island occurred in the 1940s, when many plant collections were made at fur trading posts on the eastern shore of Walker Bay (Fort Collinson), at Holman and Cambridge Bay, and on Read Island just off the south coast of the Wollaston Peninsula. Father Arthème Dutilly, associated with the Catholic University of America, collected in 1940 at Holman, at a site referred to on his collection labels as “Willows Patch” ” up to 1966 were gathered on the east side of Kings Bay, the site of the community until it moved across the bay to its current location on Queen’s Bay in that year. All collections from the community now known as Ulukhaktok are included under that name.Therefore, to improve accuracy of geographical coordinates, we secondarily georeferenced many sites following standard point-radius protocols, including determining estimates of coordinate uncertainty in metres, in cases where we were confident that existing location data could be improved upon. Georeferencing was done by J.M. Saarela and Paul Wise, Canadian Museum of Nature. Georeferencing data is included in Suppl. material CAN herbarium and for specimens that had been housed in backlog and were newly accessioned as part of this study, and collections made by A.E. Porsild, Gillespie et al., B. Bennett, S. Ponomarenko, and M. Oldenburg. A heat map showing the density of collections at sites on the island was generated using QGIS 3.4.Distribution maps were generated in ArcMap 10.5.1. Additionally, using ArcMap 10.5.1, we generated maps showing the locations of all collecting sites on the island, maps showing the locations of collections made by S. Edlund, including for specimens previously accessioned into the Annotated checklistThe vascular flora of Victoria Island is summarised in an annotated checklist. Classification of lycophytes and ferns follows s.n. [sin nombre = without number] if no collection number exists, and the code(s) identifying the herbaria where the collection is housed. Nineteenth century collections are summarized in Suppl. material All species reported for the study area are documented by one or more voucher specimens, and only vouchered records are included and mapped. Observations of species noted by B., Bay; C., Cape; Cr., Creek; I., Island; Inl., Inlet; Mts., Mountains; P., Peninsula; Pt., Point; R., River; S., Sound; TP, Territorial Park.To simplify publication of voucher information, we assigned each collection to a general area of the island. Where possible, we used general areas as described on specimen labels. In cases where no or vague site information is given on labels, however, we assigned specimens to a nearby named place. For example, collections by Edlund reported from south of Burns Lake were gathered in 1982 and 1987 at sites ca. 40–45 km south or south-southwest of the lake, but on the specimen labels the location is described only as “Geological Survey of Canada peat study location” along with the coordinates. In most cases, the toponyms we use are recognized by the Geographical Names Board of Canada. A few sites names, however, are not officially recognized. Examples include “Oldenburg Lake”, “Trunsky Lake” and “30-Mile Creek”, also known locally as “30 Mile River” and “Halovik River”. Locations of all general areas are shown in Fig. 70°56'2"N, 112°15'7"W) where collections were made by Edlund and the other southeast of the head of Minto Inlet . The esker formerly known as Ovayuk/Mount Pelly, where many collections have been made, was renamed Uvayuq, effective 21 September 2012. The esker northwest of Mount Pelly and north of Cambridge Bay formerly known as Mount Lady Pelly , where collections were made in 1962, was renamed Amaaqtuq, effective 21 September 2012.Some toponyms on Victoria Island have changed in recent years. Ferguson Lake, a large lake north of Cambridge Bay that flows into Wellington Bay via the Ekalluk River, is officially known as Tahiryuaq, the Inuinnaqtun name. We use the English name for the lake to avoid confusion with two other lakes on Victoria Island also officially named Tahiryuaq. Both of these are in Northwest Territories, one north of Prince Albert Sound  represented by each of these general study areas by drawing a bounding box around all sites in Google Earth  we spent searching for species diversity. We also scored the presence of taxa in the Circumpolar Vegetation Map bioclimate subzones C and D across Victoria Island , and Ovayok Territorial Park, the only protected area on the island , Brassicaceae (10), and Poaceae (17). Of the remaining 35 families, 21 are represented by a single genus, eight by two genera, two by three, one by four, one by five, one by seven and one by eight , Brayaglabella, B.thorild-wulffii (Brassicaceae), Sileneinvolucrata, S.uralensis (Caryophyllaceae), Carexbigelowii, Eriophorumscheuchzeri (Cyperaceae), Juncusarcticus (Juncaceae), Anthoxanthummonticola, Elymusalaskanus, Festucarubra, Poaarctica (Poaceae), Potentillaarenosa (Rosaceae). Three infraspecific taxa of Poapratensis are recorded on Victoria Island.Three families are represented by more than ten genera: teraceae 3, BrassiEurybiasibirica, Seneciolugens (Asteraceae), Mertensiadrummondii (Boraginaceae), Brayathorild-wulffiisubsp.glabrata, Cardaminebellidifolia, Crucihimalayabursifolia, Drabanorvegica, D.pauciflora, Erysimumcoarctatum, Parryanudicaulis (Brassicaceae), Sabulinaelegans, S.stricta, Saginacaespitosa (Caryophyllaceae), Eriophorumrusseolumsubsp.albidum (Cyperaceae), Andromedapolifolia (Ericaceae), Oxytropisdeflexavar.foliolosa (Fabaceae), Luzulawahlenbergii (Juncaceae), Montiafontana (Montiaceae), Corallorhizatrifida (Orchidaceae), Castillejapallidavar.caudata, Pedicularishirsuta (Orobanchaceae), Anthoxanthumnitenssubsp.nitens, Bromuspumpellianus, Deschampsiacespitosasubsp.cespitosa, D.sukatschewii, Festucarubrasubsp.rubra, Loliumperenne, Poapratensissubsp.pratensis (Poaceae), Stuckeniafiliformis, S.vaginata (Potamogetonaceae), Pulsatillanuttalliana (Ranunculaceae), Potentillahyparcticasubsp.hyparctica, P.×prostrata, P.vulcanicola, Rubuschamaemorus L. (Rosaceae), Galiumaparine (Rubiaceae), Salixarctophila, S.ovalifoliavar.ovalifolia, S.planifolia . Seven taxa are known from two collections: Brayathorild-wulffiisubsp.thorild-wulffii, Drabafladnizensis, D.oligosperma (Brassicaceae), Arenarialongipedunculata (Caryophyllaceae), Equisetumscirpoides (Equisetaceae), Anthoxanthummonticolasubsp.monticola (Poaceae) and Ranunculussulphureus (Ranunculaceae). Three taxa are known from three collections: Antennariamonocephalasubsp.angustata, Artemisiatilesii (Asteraceae) and Carexbicolor (Cyperaceae). Of the remaining taxa, 26 are known from 4–5 collections, 31 from 6–10, 51 from 11–19, 41 from 21–30, 28 from 31–40, 27 from 41–50 and 16 from 51–59. Fifteen species are known from 61–91 collections: Parryaarctica (Brassicaceae), Sabulinarubella, Sileneuralensissubsp.uralensis (Caryophyllaceae), Carexaquatilissubsp.stans, C.fuliginosasubsp.misandra, C.membranacea, C.scirpoideasubsp.scirpoidea (Cyperaceae), Pedicularislanata (Orobanchaceae), Arctagrostislatifoliasubsp.latifolia, Dupontiafisheri, Festucabaffinensis, Poaglaucasubsp.glauca (Poaceae), Bistortavivipara (Polygonaceae), Dryasintegrifoliasubsp.integrifolia (Rosaceae) and Salixrichardsonii . Three species are known from over 100 collections: Drabacorymbosa (102), Salixarctica (162), Drabacinerea (114) and Stellarialongipes (113).The number of collections per taxon from Victoria Island ranges from 1 to 162 (mean 24 ± 23). Thirty-nine taxa are known on the island from a single collection: Artemisiatilesii, Seneciolugens, Taraxacumscopulorum (Asteraceae), Crucihimalayabursifolia, Drabafladnizensis, D.juvenilis, D.pilosa, D.simmonsii (Brassicaceae), Carexbigelowiisubsp.bigelowii, Eriophorumrusseolumsubsp.albidum (Cyperaceae), Anthoxanthummonticolasubsp.monticola, Bromuspumpellianus, Deschampsiacespitosasubsp.cespitosa, D.sukatschewii, Festucarubrasubsp.rubra, Loliumperenne, Poapratensissubsp.pratensis (Poaceae), Stuckeniafiliformis (Potamogetonaceae), Potentilla×prostrata (Rosaceae), Galiumaparine (Rubiaceae) and Salixovalifoliavar.ovalifolia . Eight of these are new to the flora of the Canadian Arctic Archipelago: Seneciolugens, Drabajuvenilis, D.pilosa, Anthoxanthummonticolasubsp.monticola, Bromuspumpellianus, Deschampsiacespitosasubsp.cespitosa, Poapratensissubsp.pratensis, Salixovalifoliavar.ovalifolia. One of these, Galiumaparine, is newly recorded for the flora of Nunavut. Four of these first records for Victoria Island are introduced plants discovered in Cambridge Bay in 2017: three grasses  and Galiumaparine. One taxon, Juncusarcticussubsp.arcticus, is newly recorded from the Northwest Territories.Twenty-one taxa in eight families are newly recorded for the flora of Victoria Island, namely Carexvaginata, Cystopterisfragilis, Equisetumarvensesubsp.alpestre, Huperziaarctica, Woodsiaglabella). Eight taxa are recorded in subzone C that are not recorded in subzone D: Brayathorild-wulffiisubsp.glabrata, Cardaminebellidifolia, Drabapauciflora, Deschampsiacespitosasubsp.cespitosa (borderline subzone C/D), Puccinelliabruggemannii, Ranunculussabinei, Ranunculussulphureus and Saxifragaflagellarissubsp.platysepala. A total of 134 taxa are recorded in subzone D that are not recorded in subzone C.Considering diversity in the CAVM subzones present on the island, 157 taxa are recorded in subzone C, 283 in subzone D, and 149 taxa are recorded in both subzones  ecoregion, 37 in the West Prince Albert Upland MA ecoregion, six in the East Prince Albert Plain MA ecoregion, 51 in the Shaler Mountains MA ecoregion, 76 in the Tahiryuak Upland MA ecoregion, 29 in Wollaston Peninsula MA ecoregion and 231 in Prince Albert Coastlands Low Arctic-north ecoregion  and Ovayok Territorial Park (57). If the flora of Ovayok is considered as part of the Cambridge Bay area, 187 taxa are recorded in the area; only four species are recorded from Ovayok that are not otherwise known from the Cambridge Bay area , whereas there are many species recorded from Cambridge Bay not known to occur in the park.Of the eight general areas on Victoria Island that have been botanically explored the most, the greatest diversity of vascular plants is recorded in Ulukhaktok, where 194 taxa are known Table . The nexSpecies discovery curves for each of the six areas we aimed to document comprehensively in 2008 and 2010 each indicate a generally consistent increase in number of new species found with each additional day of exploration Fig. . Curves We recorded 272 species and 289 taxa on Victoria Island, including 21 taxa newly reported for the island. This represents an increase of 4.3% from the 277 taxa previously recorded from Victoria Island , which i2) than the Ulukhaktok area (16.5 km2) where collections have been made. In addition to different levels of species richness, the floras of the two areas are dissimilar. Although a total of 150 taxa are documented in both areas, 43 are recorded from Uluhaktok that are not known from Cambridge Bay and 33 from Cambridge Bay that are not known from Ulukhaktok; 61 taxa recorded on the island are not recorded from either area  and the next-greatest diversity is recorded from Cambridge Bay , with about 3.5% fewer taxa recorded than Ulukhaktok. This was an unexpected result, as we had predicted the Cambridge Bay area to be richer because (1) there has been more exploration and collecting there (1422 unique collections in our dataset) compared to Ulukhaktok (915 unique collections), and (2) the Cambridge Bay area, as we have defined it, including the area east of the community along the road to Ovayok Territorial Park and west of the community to the Augustus Hills area, is considerably larger . All of these were collected in 2017, in Cambridge Bay, growing in the same spot, where they were likely planted as part of a seed mixture. Galiumaparine likely grew from seed contaminating the grass seed mixture; the taxon is likely extirpated, as we collected the single plant seen at the site. We do not know if any of these taxa persist at the site. Although there is currently no evidence for the occurrence of widespread invasion of non-native vascular plants on Victoria Island, Cambridge Bay and Ulukhaktok, in particular, should be regularly monitored for possible introductions and persistence of such taxa.There are few introduced vascular plant species in the Canadian Arctic Archipelago, and none that are considered to be invasive . AccordiAnthoxanthummonticolasubsp.monticola, Artemisiatilesii, Crucihimalayabursifolia), Gillespie et al. , Ponomarenko  and Saarela . A subset of first records of species for Victoria Island reported here are based on a combination of recently collected material plus material newly processed from herbarium backlog that was collected years ago  or re-identified (Drabafladnizensis). Newly processed specimens from herbarium backlog also resulted in new first records for the island , as did study of existing herbarium material, including some that was apparently overlooked in previous work . These results underscore the importance of field exploration in combination with careful herbarium research, which is generally more time consuming than the field work component of floristic research, when attempting to characterize the flora of an area.The numerous first records of taxa for Victoria Island reported by Gentianellapropinqua, Tofieldiapusilla), south (Festucahyperborea) and west (Juncusarcticussubsp.arcticus). In a few cases, we report additional collections for species newly reported for the island in Carexbicolor) or previously unreported collections gathered decades ago but only now liberated from herbarium backlog . Study of existing herbarium material resulted in “discovery” of many collections that were apparently not considered in previous Canadian Arctic floristic efforts, including collections made by A. Dutilly at Boot Inlet, R. Hainault at Mt. Lady Pelly and a subset of the collections made by J.D.H. Lambert at Long Lake. Review and processing of relevant material from the CAN backlog resulted in records from sites from which no or few collections have otherwise been made, including collections by M. Oldenburg from “Oldenburg Lake”, inland sites on the Prince Albert Peninsula, and Read Island. Similarly, the Edlund backlog material from Victoria Island reported here comprises collections from sites from which other collections were already processed at CAN and sites that were not previously represented in herbarium material, like some inland sites on the Storkerson Peninsula. The material collected at Cambridge Bay by Oldenburg in 1944 and Polunin in 1947, which was processed from the CAN backlog as part of this study and is newly published here, did not reveal any new records for the area. However, these collections, being 70+ years old, provide an important temporal element to understanding the flora of the Cambridge Bay region, as Oldenburg and Polunin were the first botanists  to make extensive collections there. Polunin’s Cambridge Bay collection records a number of species not present among Oldenburg’s collection from the same area three years earlier, such as Carexatrofusca, C.bigelowiisubsp.bigelowii, Carexcapillarissubsp.fuscidula, Carexmyosuroides, Equisetumvariegatumsubsp.variegatum and Juncusbiglumis.In addition to first records for Victoria Island, the current study documents many new sites for species previously recorded from one or more sites on the island. The majority of these are collections that close major or minor gaps in species’ known distributions. For example, our 2008 fieldwork across southern Victoria Island–in areas where no or few collections had previously been made–resulted, as expected, in collections that close numerous gaps in distribution for taxa otherwise documented elsewhere on the island, across the Canadian Arctic Archipelago and on the adjacent mainland. Our fieldwork on southeastern Victoria Island resulted in collections from many sites that had not previously been explored or documented . Some new site records reported here variously represent extensions to the known ranges of species, to the north , 1945 (Pedicularishirsuta), 1946 (Potentillahyparcticasubsp.hyparctica), 1949 , 1952 (Potentillavulcanicola), 1959 , 1962 , 1964 , 1986 (Cardaminebellidifolia) and 1987 . The exact original collecting sites for all the collections made prior to the 1980s would likely be impossible to re-locate, since locality information on specimen labels is brief and imprecise. For example, the 1964 collections are part of a larger set of 48 specimens gathered by J.D.H. Lambert from “Long Lake” (Kellogok), a linear lake some 10 km in length with its northwestern end included in (or surrounded by) the southeastern portion of Ovayok Territorial Park. Additional information provided on the labels is brief, including plot numbers 21–27, the coordinates 69°07'N, 104°34'W, and the habitat “sedge meadow” on a subset of collections. The coordinates mark a spot about 750 m west of the mid-point of the lake. We do not know how accurate these coordinates are, nor if they were determined by the collector or secondarily by another worker based on the named locality. The recorded plot numbers suggest the collections were made as part of an ecological study, but we have not been able to align them with published or unpublished research. Other species recorded by Lambert from “Long Lake” include the rare species Lupinusarcticussubsp.arcticus (three collections) and the heaths Empetrumnigrum, Rhododendrontomentosumsubsp.decumbens, Vacciniumuliginosum and V.vitis-idaeasubsp.minus, most of which are uncommon on the island. The presence of the heaths indicates acidic substrate in the “Long Lake” area, which on southeastern Victoria Island is otherwise known only from the Wellington Bay area. Efforts should be undertaken to explore the “Long Lake” area to try and re-locate the occurrence(s) of these rare taxa, most of which should be relatively conspicuous, particularly if/when in flower, and which have not been seen in the area in over 50 years.Thirty-nine taxa are known on the island from a single collection, seven from two collections and three from three collections. All 47 of these taxa may be considered rare on the island, and efforts should be made to discover additional populations. Many of the taxa known from a single collection have not been seen in decades, being known only from collections made in 1915  and sedges (Cyperaceae). Specialist knowledge is usually needed to locate and recognize diversity in such challenging groups in the field. Our own experience on Victoria Island serves as an example of this: the Canadian Arctic flora was brand new to one of us (J.M. Saarela) on our 2008 expedition. Reflecting on experience gained with the Canadian Arctic vascular plant flora in both the field and herbarium over the subsequent ten-year period, it is likely that some species present at sites studied in the plant families focused on by that individual  during that expedition were overlooked . Reciprocally, Puccinellia expert Laurie Consaul, who was also part of the 2008 expedition, focused on documenting diversity in that challenging genus on Victoria Island. Results, based on targeted search efforts, included her locating new populations of P.banksiensis, a species described as new to science that same year that was not then known from the island , such as those in the genera e island . This deVascular plant species diversity in the Canadian Arctic is correlated with habitat diversity. A large subset of species in the Arctic tend to be dominant and widespread, present wherever suitable habitat occurs; these species are easy to find. On the other hand, many vascular plant species in the Arctic tend to be uncommon on the landscape and occur in microhabitats that do not reflect the dominant vegetation in an area. Examples of microhabitats we encountered on Victoria Island with interesting vascular plant diversity included bird perches , shallow freshwater ponds and south-facing slopes. Locating and searching as many microhabitats as possible results in discovery of the greatest number of species, as we found on Victoria Island. Accordingly, the general locations of our camp sites were chosen by targeting areas that appeared, on topographical maps, to be topographically diverse, ideally including local variation in elevation, aspect, moisture and geology. Ability to survey as many habitats as possible in an area is related to the amount of time available for searching and the diversity of the landscape. The number of days we spent in each area were determined based on our estimate of how long it would take to thoroughly explore the local habitat diversity, though other factors also affected this, such as availability of helicopter support and weather, which greatly affects logistical planning in the Arctic. Exactly where we were able to establish base camps was dependant on suitable areas to land a Twin Otter plane on the tundra in order to establish a camp, the availability of helicopter support for establishing a camp, logistical and financial support for plane and helicopter time, and weather.Mts.), however, are not included in the diversity count for that area because they are too far away to reasonably be considered as part of the Oterkvik Point region. The spike in the number of new species recorded in the Johansen Bay area on the ninth day in that area is a result of collections gathered during a ca. 16 kilometer (round trip) hike from our camp to the coast. Plateaus in the mid portions of some of the species discovery curves generally correspond to days that were spent processing field collections  made on the previous one or two days. Accordingly, no or few new collections representing species that had not yet been recorded at the site were made on those days because field exploration was limited. Species diversity discovered at the Sinclair Creek site was the lowest among the six intensive study areas because we spent only three days there, the least amount of time spent at any of the sites. Moreover, the total area covered by our brief exploration in the vicinity of Sinclair Creek was 1 km2, compared to the Johansen Bay and Oterkvik Pt. areas, which were 355 km2 and 212 km2, when helicopter sites are taken into account.The species discovery curves Fig.  show thaVascular plant biodiversity in the Arctic is correlated with summer warmth, with diversity declining substantially from south to north. A total of 75–150 species is expected in local floras across bioclimate subzone C and 125–250 in subzone D, based on research by Cystopterisfragilis) or more or less throughout the subzone  . Their rareness in subzone C on the island may therefore be a result of collection bias, which seems likely for E.arvense, or lack of appropriate habitat, which seems likely for the fern taxa, which grow on acidic substrates that are uncommon on Victoria Island. The presence of Carexvaginata in subzone C is a borderline occurrence, as the species is known elsewhere in that subzone only from one area of Banks Island. Of the seven species recorded in subzone C but not in subzone D on Victoria Island, four occur elsewhere in subzone D in Canada: Cardaminebellidifolia, which is widespread in several parts of subzone D, and Puccinelliabruggemannii, Ranunculussabinei and R.sulphureus, which are recorded mostly along the northern edge of subzone D (Drabapauciflora), one is known only from one area of subzone D , and one (Deschampsiacespitosasubsp.cespitosa) is known only from subzones D and E in Canada  in subzone C on the island, all but one are common and/or known from multiple collections elsewhere in the subzone either in the eastern and northern Arctic . All but four of these  are recorded in the Nunavut portion of subzone D on the island. It is therefore likely that the remaining 13 species occur within the southern Nunavut portion of subzone C, but are as yet unrecorded. Reciprocally, there are 43 species recorded in the southern Nunavut portion of subzone C on Victoria Island that are not recorded in the northern Nunavut portion of the subzone . A subset of these are expected to be present within the northern Nunavut portion of the subzone, given their documented occurrences on nearby islands to the north and east  that are recorded elsewhere in the Canadian Arctic Archipelago from central to western Melville Island, the eastern islands and the northern Queen Elizabeth Islands, but are apparently absent  from a broad area in the central Archipelago  is recorded from the northern part of the subzone, here arbitrarily defined as comprising Storkerson Peninsula, the head of and west side of Hadley Bay, and Natkusiak Peninsula, than is recorded from the rest of the subzone in Nunavut. Of the species recorded from the more northerly Nunavut portion of subzone C, 18 are not recorded from the more southerly Nunavut portion of the subzone  may be rare or absent. Species known from southwestern Victoria Island that are not yet recorded but likely to exist on the southeastern part of the island, given their broader distributions across the Canadian Arctic Archipelago  and that several other collectors have visited, low recorded diversity is due to collection bias rather than reflecting true levels of vascular plant diversity. Aside from our 2010 efforts, there has been no attempt to comprehensively document local floras at sites/areas within the ecological regions, and most have only been cursorily explored. For example, in the East Prince Albert Plain Mid-Arctic Ecoregion, spanning 9,866 kmCHARS research activity in the Cambridge Bay area, on southeastern Victoria Island and across the entire island, and that the information on the distribution and diversity of vascular plant diversity on the island presented here will help guide future documentation efforts. The complete, specimen-based dataset published here will allow future workers to generate updated distribution maps including new occurrence records. We strongly encourage all researchers conducting botanical or plant-related ecological research on Victoria Island and throughout the Canadian Arctic to document species occurrences with specimens, and to deposit the material in one or more publically accessible herbaria, so that the collections may contribute to the centuries long mission to document Arctic biodiversity.This study has substantially increased our understanding of the diversity and distribution of the vascular plant flora of Victoria Island. The results represent a new baseline of knowledge on which continued exploration of the flora of the island can build. We have provided documentation of several taxa new to the island and increased knowledge of the spatial distribution of taxa across the island. Study of existing herbarium material, which was greatly facilitated by recent mass-digitization efforts at several institutions, revealed a large number of occurrence records that have been overlooked in previous efforts to document the vascular flora of Vascular Island. Nearly 50 taxa on the island are rare, known by three or fewer collections. Although more than 7000 unique collections of vascular plants have been made on Victoria Island, many areas remain unexplored or poorly explored botanically. Numerous species that are expected to occur within bioclimate subzones C on the island have not yet been recorded there, while many species reach their northern limits in bioclimate subzone D on the island. We expect (and hope) that many new collections of vascular plants will be gathered over the coming years, particularly related to LycopodialesLycopodiaceae [1/1]Huperzia Bernh. [1]Huperziaarctica (Grossh. ex Tolm.) Sipliv. (H.selagosubsp.arctica (Grossh. ex Tolm.) Á.Löve & D.Löve, Lycopodiumselagosubsp.arcticum Grossh. ex Tolm.), Fig. 69.1265, -105.4638) west of Cambridge Bay (image! BAB and JMS); a voucher from this locality is needed. Elsewhere in the Canadian Arctic known from Baffin, Coats, Devon, Ellesmere, Melville, Prince Patrick, Somerset and Southampton islands and mainland sites  Bernh. ex. Schrank & Mart. follows H.selago s.l. as occurring in the Canadian Arctic, despite numerous records from the region known prior to their treatment.Previously recorded from Ulukhaktok . Thannhend sites . RecogniNORTHWEST TERRITORIES. Ulukhaktok: Edlund 476, 745 (CAN), Porsild 17234, 17235 (CAN). NUNAVUT. Ferguson L. [Tahiryuaq]: Bennett et al. 14-0432 (BABY). Johansen B.: Gillespie et al. 7958 . Mukta [?] L.: Hainault 2124 (DAO).EquisetalesEquisetaceae [1/3]Equisetum L. [3]Equisetum [adapted from Porsild and Cody (1980) and Hauke (1993)]:Key to Equisetumarvense subsp. alpestre (Wahlenb.) Schönsw. & Elven, Figs Inl. , Mt. Pelly, inland from the head of Prince Albert S., Ulukhaktok  and Walker B. (Porsild obs.)  . Thannhemainland  and the mainland . The appmainland , assuminInl.NORTHWEST TERRITORIES. Boot : Edlund 576 (CAN), Gillespie et al. 9576 , 9601 . Kuujjua R.: Gillespie et al. 9797 , 9814 (CAN). Inl. (head)Minto : Edlund 136 (CAN), Gillespie et al. 10051 , 10109 , 10181, 10226 (CAN). Inl.Richard Collinson : Edlund 174 (CAN). Ulukhaktok: Edlund 481, 829 (CAN). NUNAVUT. Cambridge Bay: Edlund & Argus 12863 (CAN), Stephens 1100 . Clouston B.: Gillespie et al. 7719, 7757 (CAN). Ferguson L. [Tahiryuaq]: Hainault 2140 (DAO). Greiner L.: Ponomarenko VI-141, VI-203K (CAN). Johansen B.: Gillespie et al. 7935 , 7961 , 8107 . TPOvayok : Stephens 1066 , 1109 (KANU), 1174 (CAN). Prince Albert S. (head): Edlund & Argus 12812 (CAN). “Trunsky L.”: Bennett et al. 14-0395 (BABY), 14-0540 (CAN).Equisetumscirpoides Michx., Fig. Inl., where the species grew in a snowbed community at the base of a north-facing cliff above a lake, and the Kuujjua R. area, where it was gathered from the shore of a small round lake northeast of “Fish L.”. Elsewhere in the Canadian Arctic recorded from scattered sites on southern Baffin, Banks, Coats, King William and Southampton islands (The only previous record (unconfirmed) for Victoria I. is from Johansen B. . Newly r islands  and the  islands .NORTHWEST TERRITORIES: Inl.Boot : Gillespie et al. 9616 . Kuujjua R.: Gillespie et al. 9773 (CAN).Equisetumvariegatum Schleich. subsp. variegatum, Figs Inl., Mt. Pelly, Namaycush L., Natkusiak P., the head of Prince Albert S. (Porsild obs.), Richard Collinson Inl., Storkerson P., Tahoe L. (Porsild obs.) and Ulukhaktok . C. Wollaston: Edlund 28 (CAN). Kuujjua R.: Edlund 643 (CAN), Gillespie et al. 9826 . Inl. (head)Minto : Edlund 611, 78 (CAN), Gillespie et al. 10073 , 9484 (CAN). Natkusiak P.: Edlund 112, 160 (CAN). Inl.Richard Collinson : Edlund 175 (CAN). Ulukhaktok: Edlund 753, 802 (CAN), Porsild 17796 (CAN). NUNAVUT. Albert Edward B.: Ponomarenko VI-260 (CAN). Anderson B.: Edlund & Argus 12723 (CAN). Cambridge Bay: Bennett 13-0558 , 13-0619 (ALA), Gillespie et al. 8499 (CAN), Gould s.n. (ALA), Polunin s.n. (CAN). Ferguson L. [Tahiryuaq]: Hainault 2062 (DAO). Greiner L.: Ponomarenko VI-133A (CAN). Hadley B.: Edlund 91, 129, s.n. (CAN). Johansen B.: Gillespie et al. 8029 . Mt. Lady Pelly [Amaaqtuq]: Hainault 1842 (DAO). TPOvayok : Stephens 1066A, 1175 (CAN). Namaycush L.: Edlund 13 . Natkusiak P.: Edlund 343 (CAN). Pt.Oterkvik : Gillespie et al. 7505 , Gillespie et al. 7688 (CAN). Cr.Sinclair : Gillespie et al. 8260 (CAN), 8356 (CAN). Storkerson P.: Edlund 213, 285, 299 (CAN).Cystopteridaceae [1/1]Cystopteris Bernh. [1]Cystopterisfragilis (L.) Bernh., Figs Inl., Mt. Pelly, the head of Prince Albert S. (Porsild obs.), Richard Collinson Inl., Ulukhaktok, Walker B. and Washburn L. (Porsild obs.)  . Thannhemainland .Inl.NORTHWEST TERRITORIES. Boot : Gillespie et al. 9596 , 9608, 9639, 9690 (CAN). Kuujjua R.: Gillespie et al. 9820 , 9851 (CAN), 9990 . Inl. (head)Minto : Gillespie et al. 10216 , 10277 , Porsild 17351 (CAN). Inl.Richard Collinson : Stretton 193 (DAO). Ulukhaktok: Edlund 804, 844 (CAN), Porsild 17230 (CAN), Saarela & Bull 1485 . Walker B.: Porsild 17479 (CAN). NUNAVUT. Ferguson L. [Tahiryuaq]: Jones & Hainault 3 (DAO). Greiner L.: Ponomarenko VI-046, VI-192, VI-285 (CAN). Johansen B.: Gillespie et al. 7962 , 8167 (CAN). TPOvayok : Gillespie et al. 8421 , Stephens 1171 (CAN), 1283 . Pt.Oterkvik : Gillespie et al. 7530 .Woodsia R.Br. [1]Woodsiaglabella R.Br., Figs Inl., Mt. Pelly, the head of Prince Albert S. (Porsild obs.), Ulukhaktok and Walker B. . Inl. (head)Minto : Gillespie et al. 9446, 10043 (CAN), Porsild 17352 (CAN). Ulukhaktok: Edlund 720, 721, 758, 794 (CAN), Porsild 17232, 17233 (CAN). Walker B.: Porsild 17480 (CAN). NUNAVUT. Byron B.: Dushenko 24 (UVIC). Cambridge Bay: Bennett et al. 13-0200 , Washburn 12 (CAN). Ferguson L. [Tahiryuaq]: Bennett et al. 14-0426 (DAO), Hainault 1954 (DAO), Jones 2 (DAO). Greiner L.: Ponomarenko VI-047 (CAN). Hadley B.: Edlund 99 (CAN). Johansen B.: Gillespie et al. 7902, 7931 (CAN), 8141 . Mt. Lady Pelly [Amaaqtuq]: Hainault 1838 (DAO). TPOvayok : Gillespie et al. 7604 (CAN), 8423 , Gould s.n. (ALA), Stephens 1160, 1172 (CAN). Pt.Oterkvik : Gillespie et al. 7813 (CAN). South-central Victoria I.: Edlund & Argus 12875 (CAN).Dryopteris Adans. [1]Dryopterisfragrans (L.) Schott, Figs Previously recorded from Ulukhaktok and Ferguson L. . ThannheNORTHWEST TERRITORIES. Ulukhaktok: Bandringa 342 , Dutilly 18660 (MT), Edlund 843 (CAN), Porsild 17231 (CAN). NUNAVUT. Ferguson L. [Tahiryuaq]: Hainault 1955 (DAO). Johansen B.: Gillespie et al. 7901 , 7986 , 8024 , 8139 .AlismatalesTofieldiaceae [1/2]Tofieldia Hudson [2]Tofieldia : Bennett et al. 14-0429 (CAN), Hainault 2069, 2091 (DAO), Johansen B.: Gillespie et al. 7941b (CAN), 7959b , 8003 , 8128 . Mt. Lady Pelly [Amaaqtuq]: Jones & Hainault 7, 1844 (DAO). TPOvayok : Gillespie et al. 8432 . Pt.Oterkvik : Gillespie et al. 7469 (CAN), 7668 . Cr.Sinclair : Gillespie et al. 8231 .Stuckenia Börner [2]Stuckenia Corallorhiza Gagnebin [1]Corallorhizatrifida Châtel., Fig. Known from a single collection we made in 2008 at Johansen B.; see details in NUNAVUT. Johansen B.: Gillespie et al. 8093 (CAN).Juncaceae [2/7/8]JuncaceaeKey to Juncus : Hainault 2012 (DAO). Greiner L.: Ponomarenko VI-230, VI-341B (CAN). Hadley B.: Edlund 66, 144 (CAN). Johansen B.: Gillespie et al. 7951 . TPOvayok : Bennett & Sullivan 13-0286 (chars). Namaycush L.: Edlund 126 (CAN). Pt.Oterkvik : Gillespie et al. 7689 (CAN), 7787 . Read I.: Oldenburg 43-1008 (CAN). Cr.Sinclair : Gillespie et al. 8238 . Storkerson P.: Edlund 178, 295 (CAN). Washburn L.: Edlund & Argus 12795 (CAN), Oldenburg 46-2217 (CAN).Juncusleucochlamys V.J.Zinger ex V.I.Krecz. |  Hultén), Figs Inl. and Ulukhaktok . Kuujjua R.: Gillespie et al. 9860 (CAN), 9901 . Inl. (head)Minto : Edlund 125 (CAN), Gillespie et al. 10227 , Porsild 17377 (CAN). Ulukhaktok: Edlund 359, 505, 799 (CAN), Porsild 17263 (CAN). Walker B.: Oldenburg 45-1438 (CAN). NUNAVUT. Cambridge Bay: Edlund & Argus 12626 (CAN), Oldenburg 44-899 (CAN). Johansen B.: Gillespie et al. 8017 . Pt.Murray : Gillespie et al. 8201 (CAN).Juncustriglumis subsp. albescens (Lange) Hultén , Figs Inl., Mt. Bumpus, Namaycush L., east of the head of Prince Albert S. and Ulukhaktok. Inl., Kuujjua R., the Greiner L. watershed, Oterkvik Pt. and Sinclair Cr. Elsewhere in the Canadian Arctic recorded from Axel Heiberg, Baffin, Banks, Coats, Devon, Ellesmere, King William and Southampton islands and several mainland sites . C. Wollaston: Edlund 32, 64 (CAN). Kuujjua R.: Edlund 652 (CAN), Gillespie et al. 9859 (CAN). Inl. (head)Minto : Edlund 163 (CAN), Gillespie et al. 10032 , Porsild 17373 (CAN). Ulukhaktok: Bliss s.n. (ALTA), Edlund 358, 754, 800, 17261 (CAN), Oldenburg 42-69 (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 13-0261 , Gillespie et al. 8440 , Gould s.n. (ALA), Stephens 1035 . C. Peel: Edlund 2 (CAN). Greiner L.: Ponomarenko VI-231 (CAN). Johansen B.: Gillespie et al. 8015 . Mt. Bumpus: Edlund 177 (CAN). Namaycush L.: Edlund 35 (CAN). Pt.Oterkvik : Gillespie et al. 7788 . Prince Albert S. (head): Edlund & Argus 12822 (CAN). Cr.Sinclair : Gillespie et al. 8336 (CAN).Luzula : Bennett et al. 14-0409 (UBC), Hainault 2074 (DAO). Greiner L.: Ponomarenko VI-279B, VI-282B (CAN). Johansen B.: Gillespie et al. 7847 , 7903, 8028 . “Long L.”: Lambert s.n. (CAN). Pt.Murray : Gillespie et al. 8207 , 8208 , 8202 . Pt.Oterkvik : Gillespie et al. 7680 , 7574 .Luzulanivalis (Laest.) Spreng. (L.arctica Blytt), Figs Inl., Namaycush L., Natkusiak P., Shaler Mts., Storkerson P. and Ulukhaktok . Kuujjua R.: Gillespie et al. 9779 , 9979 . Inl. (head)Minto : Edlund 161 (CAN), Gillespie et al. 10013 , 9505 (CAN). Natkusiak P.: Edlund 79 (CAN). Prince Albert S. (N): Oldenburg 46-2272 (CAN). Mts.Shaler : Edlund 542 (CAN). Ulukhaktok: Bliss s.n. (ALTA), Edlund 356, 477, 715 (CAN), Oldenburg 42-85, 45-1599 (CAN), Porsild 17265 (CAN), Saarela & Bull 1478 (CAN). NUNAVUT. Albert Edward B.: Ponomarenko VI-335A (CAN). Anderson B.: Edlund & Argus 12711 (CAN). Cambridge Bay: Oldenburg 44-927 (CAN), Polunin s.n. , Stephens 1042 . Collinson P.: Edlund & Argus 12765 (CAN). Ferguson L. [Tahiryuaq]: Hainault 2043 (DAO). Greely Haven: Fortier 93 (CAN). Greiner L.: Ponomarenko VI-274, VI-279C, VI-298, VI-298A (CAN). Hadley B.: Edlund 112, s.n. (CAN). Johansen B.: Gillespie et al. 8172 , 8027 . TPOvayok : Gould s.n. (ALA). Pt.Murray : Gillespie et al. 8206 . Namaycush L.: Edlund & Roncato-Spencer 56 (CAN). Cr.Sinclair : Gillespie et al. 8230 . Storkerson P.: Edlund 176 (CAN). “Trunsky L.”: Bennett et al. 14-0392 .Luzulawahlenbergii Rupr., Fig. Known from a single collection we made in 2008 at Johansen B.; see NUNAVUT. Johansen B.: Gillespie et al. 8170 (CAN).Cyperaceae : Bennett et al. 14-0417 , Hainault 1929 (DAO), Jones & Hainault 1866 (DAO). Greiner L.: Ponomarenko VI-124C, VI-136, VI-149, VI-158, VI-190, VI-203C, VI-240, VI-329c (CAN). Hadley B.: Edlund 35, 104, 425 (CAN). Johansen B.: Gillespie et al. 7916 , 7906 . Mt. Bumpus: Edlund 203, 216, 248 (CAN). Pt.Murray : Gillespie et al. 8190 . Namaycush L.: Edlund 34, 76, 137, 138 (CAN). Pt.Oterkvik : Gillespie et al. 7479 , 7545 . Prince Albert S. (head): Edlund 100, 24, 93 (CAN). Read I.: Oldenburg 43-1007b (CAN). Cr.Sinclair : Gillespie et al. 8299 . Storkerson P.: Edlund 183, 281 (CAN). Tahoe L.: Porsild 17450 (CAN). Tuktu R.: Gould s.n. (ALA). Washburn L.: Edlund & Argus 12799 .Carex atrofusca Schkuhr, Figs Inl., Mt. Pelly, Tahiryuaq and Ulukhaktok , Gillespie et al. 9641 . Inl. (head)Minto : Gillespie et al. 9487 , Porsild 17364 (CAN). Kuujjua R.: Gillespie et al. 9775 . Inl.Richard Collinson : Edlund 684 (CAN). Tahiryuaq: Edlund 405 (CAN). Ulukhaktok: Edlund 312, 490 , 725 (CAN), Porsild 17247 (CAN). NUNAVUT. Albert Edward B.: Ponomarenko VI-254A, VI-266 (CAN). Cambridge Bay: Bennett et al. 13-0169 , Calder et al. 24156 (DAO), Edlund & Argus 12670 , Gillespie et al. 8409 , Gould s.n. (ALA), Polunin s.n. , Ponomarenko VI-080C, VI-085, VI-089A (CAN), Porsild 21600 (CAN), Stephens 1039 , 968 , 1057, 1128 . Falaise B.: Eriksen et al. 951 (ALA). Ferguson L. [Tahiryuaq]: Hainault 2057 (DAO), Hainault & Jones 1869 (DAO). Greiner L.: Ponomarenko VI-100C, VI-100D, VI-100E, VI-130, VI-135a, VI-154A (CAN). Hadley B.: Edlund 146 (CAN). Jonnessee L.: Edlund & Argus 12779, 12780 (mixed with C.saxatilis), 12782 (CAN). Johansen B.: Gillespie et al. 7947 . Mt. Bumpus: Edlund 161, 225 (CAN). TPOvayok : Gould s.n. (ALA). Pt.Oterkvik : Gillespie et al. 7478 , Gillespie et al. 7612 . Read I.: Ross 10 (ALTA). Cr.Sinclair : Gillespie et al. 8305 .Carexbicolor Bellardi ex All., Fig. Carexaquatilis fen surrounded by Dryasintegrifolia/Salixarctica tundra with Salixrichardsonii, Saxifragahirculus and Carexsimpliciuscula, and one from the Kuujjua R. area, collected in 1982. The latter specimen had been misidentified as Carexrariflora. Elsewhere in the Canadian Arctic recorded from southern Baffin, Coats and Nottingham islands and a few sites on mainland Nunavut and Northwest Territories . NUNAVUT. Cambridge Bay: Bennett et al. 13-0199 . Johansen B.: Gillespie et al. 8118 (CAN).Carexbigelowii Torr. ex Schwein. subsp. bigelowii, Fig. Pt. The Ferguson L. records were not previously determined to subspecies. This is a primarily eastern Arctic taxon recorded elsewhere in the Canadian Arctic from numerous mainland sites as well as Baffin, Devon, Ellesmere and Southampton islands (C.bigelowii from six sites and C.lugens from one (Richardson I.). We find the former taxon to be rare on Victoria I. and the latter to be common. It is possible that the taxon concepts in that paper were inadvertently mixed up.Newly recorded for Victoria Island, known from Cambridge Bay, Ferguson L., Johansen B. and Oterkvik  islands . It reac islands . ThannheNUNAVUT. Cambridge Bay: Polunin s.n. (CAN). Ferguson L. [Tahiryuaq]: Hainault 2077, 2134 (DAO). Johansen B.: Gillespie et al. 7876 . Pt.Oterkvik : Gillespie et al. 7799 .Carexbigelowii subsp. lugens (Holm) T.V.Egorova , Fig. Inl., Johansen B., Mt. Lady Pelly, “Oldenburg L.”, Oterkvik Pt., Read I., Sinclair Cr., Surrey L., Walker B. and Washburn L. Elsewhere in the Canadian Arctic recorded from Banks I. and some mainland sites, reaching its known eastern limit on central mainland Nunavut (bigelowii on Victoria I.Previously known from Ulukhaktok and the head of Prince Albert S. . Thannhe Nunavut . This suInl. (head)NORTHWEST TERRITORIES. Minto : Gillespie et al. 10269 , 10270 , 10282 . “Oldenburg L.”: Oldenburg 45-1373 (CAN). Prince Albert S.: Porsild 17436 (CAN). Ulukhaktok: Edlund 910 (CAN), Oldenburg 42-83, 42-86, 45-1561 (CAN). Porsild 17248 (CAN), Saarela & Bull 1474 . Walker B.: Oldenburg 45-1415 (CAN). NUNAVUT. Cambridge Bay: Oldenburg 44-905A, 44-961 (CAN), Saarela & Teeter 5284 (CAN). Johansen B.: Gillespie et al. 7952 , 8049 , 7845 . Mt. Lady Pelly [Amaaqtuq]: Jones & Hainault 34a (DAO). Pt.Oterkvik : Gillespie et al. 7557 , 7784 , 7607 . Read I.: Oldenburg 42-494, 43-1005, 43-893, 43-971 (CAN). Cr.Sinclair : Gillespie et al. 8308 , 8244 (CAN). Surrey L.: Edlund & Argus 12805 (CAN). Washburn L.: Oldenburg 46-2219 (CAN).Carexborealipolaris S.R.Zhang (Kobresiasibirica (Turcz. ex Ledeb.) Boeckeler, K.hyperborea A.E.Porsild), Figs Inl. (conf.), Richardson I., Johansen B. (conf.), Hadley B. and Mt. Pelly. Newly recorded from Boot Inl., Greiner L., Kuujjua R., Murray Pt., Oterkvik Pt., Read I., Sinclair Cr. and Washburn L. Elsewhere in the Canadian Arctic recorded from scattered sites on mainland Nunavut and Northwest Territories . Kuujjua R.: Gillespie et al. 9729 , 9782 , 9900 . Inl. (head)Minto : Gillespie et al. 10284 , 10297 . Ulukhaktok: Edlund 859 (CAN), Porsild 17260 , Saarela & Bull 1495 . Walker B.: Porsild 17487 (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 13-0188 , 13-0611 (CAN), Consaul & Gillespie 1127 (CAN), Dutilly & Duman 37110 (US), Edlund & Argus 12688 (CAN), Gillespie et al. 8371 , Oldenburg 44-920 (CAN), Polunin s.n. , Ponomarenko VI-086B, VI-090A (CAN), Porsild 21608 (CAN). Ferguson L. [Tahiryuaq]: Hainault 2135 (DAO), Jones & Hainault 1863A (DAO). Greiner L.: Ponomarenko VI-302 (CAN). Johansen B.: Gillespie et al. 7950 , 7840 . Pt.Murray : Gillespie et al. 8205 . Namaycush L.: Edlund & Roncato-Spencer 109 (CAN). Pt.Oterkvik : Gillespie et al. 7556 . Read I.: Oldenburg 43-986 (CAN). Cr.Sinclair : Gillespie et al. 8229 . Washburn L.: Oldenburg 46-2221 (CAN).Carexcapillaris subsp. fuscidula (V.I.Krecz. ex T.V.Egorova) Á.Löve & D.Löve, Fig. C.capillarissubsp.capillaris (probably including both subsp. fuscidula and C.krausei) from Johansen B. (conf.) and the head of Minto Inl. (conf.). Newly recorded from Boot Inl., Kuujjua R., Mt. Bumpus, Oterkvik Pt. and Sinclair Cr. Elsewhere in the Canadian Arctic recorded from Axel Heiberg, Baffin, Banks, Ellesmere, Somerset and Southampton islands, scattered sites on mainland Nunavut and Northwest Territories, and northern Quebec and Labrador , Ulukhaktok  and Walker B. (Porsild obs.) . ThannheLabrador .Inl.NORTHWEST TERRITORIES. Boot : Gillespie et al. 9675 (CAN). Kuujjua R.: Gillespie et al. 9774 , 9946 . Inl. (head)Minto : Gillespie et al. 10240 , 10281 . Ulukhaktok: Edlund 313, 772, 815, 896 (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 13-0184 , Polunin s.n. (CAN), Stephens 1191 (CAN). Johansen B.: Gillespie et al. 7844 (CAN), 7987 (CAN). Mt. Bumpus: Edlund 284 (CAN). Pt.Oterkvik : Gillespie et al. 7571 , 7685 . Cr.Sinclair : Gillespie et al. 8306a (CAN). Read I.: Oldenburg 43-888, 43-995 (CAN), Porsild 17187 (CAN).Carexchordorrhiza L.f., Fig. Previously recorded from Tahoe L., where collected in 1949, and a lake edge 1.6 km northeast of Cambridge Bay . Newly rNORTHWEST TERRITORIES. Wollaston P.: Oldenburg 54-504A (MIN). NUNAVUT. Cambridge Bay: Stephens 1279 (CAN). Greiner L.: Ponomarenko VI-122, VI-178A (CAN). Tahoe L.: Porsild 17449 (CAN).Carexfuliginosa subsp. misandra (R.Br.) Nyman (C.misandra R.Br.), Figs Inl., Natkusiak P., Namaycush L., N of a large lake in the Ekalluk River system about 90 km NNE of Cambridge Bay, Mt. Bumpus, Storkerson P., Tahiryuaq, Ulukhaktok and Walker B. , 9669 (CAN), 9676 . Kuujjua R.: Gillespie et al. 9726 . Inl. (head)Minto : Edlund 91 (CAN), Gillespie et al. 9488 . Natkusiak P.: Edlund 78 (CAN). “Oldenburg L.”: Oldenburg 45-1372 (CAN). Prince Albert P.: Oldenburg 54-239, 54-663 (UBC). Prince Albert S. (head): Weerstra 32, 33 (DAO). Prince Albert S. (N): Oldenburg 46-2274 (CAN). Inl.Richard Collinson : Edlund 685 (CAN). Tahiryuaq: Edlund 405 (CAN). Ulukhaktok: Bliss s.n. (ALTA), Edlund 487 , 728 (CAN), Oldenburg 42-84, 45-1570, 45-1574 (CAN), Porsild 17251, 17252 (CAN), Saarela & Bull 1494 . Walker B.: Oldenburg 45-1417, 45-1419, 45-1422 (CAN), Porsild 17483, 17484 (CAN). Cr.NUNAVUT. “30-Mile ”: Bennett et al. 14-0354 . Albert Edward B.: Ponomarenko VI-255 (CAN). Anderson B.: Edlund & Argus 12718 (CAN). Byron B.: Dushenko 8 (UVIC). Cambridge Bay: Bennett et al. 14-0321 (UBC), 13-0185 , Calder et al. 24167, 24168 (DAO), Gillespie et al. 8365 , Oldenburg 44-911, 44-913, 44-966 (CAN), Polunin s.n. , Ponomarenko VI-080D, VI-086E, VI-095 (CAN), Porsild 21602 (DAO), Stephens 1185 , 997 (KSTC), 1043, 1044 , 1188 , Thomson s.n. (WIS), Washburn 4, 6, 27 (CAN). Ekalluk R.: Edlund & Argus 12741 (CAN). Eastern Victoria I.: Lee & Kittle s.n. (CAN). Ferguson L. [Tahiryuaq]: Bennett et al. 14-0416 . Greiner L.: Ponomarenko VI-035A, VI-101b, VI-121, VI-131A, VI-151, VI-177, VI-238B (CAN). Hadley B.: Edlund 103, s.n. (CAN). Johansen B.: Gillespie et al. 7943 , 8018 , 8171 . Mt. Bumpus: Edlund 224, 253 (CAN). TPOvayok : Bennett & Sullivan 13-0288 , Gillespie et al. 8425 , Stephens 1045 (KANU), 1129 . Namaycush L.: Edlund 133 (CAN), Edlund & Roncato-Spencer 105 (CAN). Natkusiak P.: Edlund 311 (CAN). Pt.Oterkvik : Gillespie et al. 7606 , 7643 . Prince Albert S.: Weerstra 27 (DAO). Read I.: Oldenburg 43-1011, 43-943 (CAN). Cr.Sinclair : Gillespie et al. 8306b . Storkerson P.: Edlund 187 (CAN). Washburn L.: Oldenburg 46-2227 (CAN).Carexglacialis Mack., Fig. Mts. and Oterkvik Pt. At one site in the Kuujjua R. area, the species was common in dry, almost bare soil among bedrock-dominated tundra growing with Deschampsiabrevifolia, Dryasintegrifolia and Salixarctica, in an area dominated by sand dunes. Elsewhere in the Canadian Arctic recorded from Axel Heiberg, Baffin, Coats, Ellesmere and Nottingham islands, and numerous mainland sites , 9978 . Prince Albert S.: Porsild 17365 (CAN). Mts.NUNAVUT. Colville : Gillespie et al. 7763 (CAN). Pt.Oterkvik : Gillespie et al. 7608 , 7675 .Carexglareosa Wahlenb. subsp. glareosa , Fig. C.amblyorhyncha (=C.marina)), where gathered in 1949 near the Hudson’s Bay Post and not recorded in the area since, and Oterkvik Pt. Elsewhere in the Canadian Arctic known from Baffin, Coats, Devon, Ellesmere and Southampton (CAN 583988) islands and mainland sites . NUNAVUT. Cambridge Bay: Porsild 17464 (CAN). Johansen B.: Gillespie et al. 8020 . Pt.Oterkvik : Gillespie et al. 7683 .Carexkrausei Boeckeler (C.capillarissubsp.robustior (Lange) Böcher), Figs C.capillarissubsp.capillaris by Cr.”, Boot Inl., Clouston B., Kuujjua R., the head of Minto Inl., Johansen B. and Oterkvik Pt. Elsewhere in the Canadian Arctic recorded from Axel Heiberg, Baffin, Banks, Coats, Ellesmere and Southampton islands and mainland sites , 9675 (CAN). Kuujjua R.: Edlund 647 (CAN), Gillespie et al. 9977 . Inl. (head)Minto : Edlund 623 (CAN), Gillespie et al. 10157 , 10230 . Prince Albert S. (S): Edlund 534 (CAN). Cr.NUNAVUT. “30-Mile ”: Bennett et al. 14-0653 (BABY). Clouston B.: Gillespie et al. 7747 . Johansen B.: Gillespie et al. 7995 , 8114 , 7843 . Pt.Oterkvik : Gillespie et al. 7686 , 7710 (CAN).Carexmarina Dewey (C.amblyorhyncha V.I.Krecz.), Figs Inl. and Ulukhaktok  (Porsild 17466)  . Thannhed 17466)  apparentnd sites .Inl.NORTHWEST TERRITORIES. Boot : Gillespie et al. 9640 . Kuujjua R.: Gillespie et al. 9776 . Inl. (head)Minto : Gillespie et al. 9504 , 10039 , 9491 , 10295 , Porsild 17366 (CAN). Ulukhaktok: Edlund 489, 518 (CAN), Oldenburg 42-102, 42-68, 42-99C (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 13-0204 , 14-0367 , 13-0565 (MICH), Gillespie et al. 8411 , Ponomarenko VI-088 (CAN), Stephens 1199 . Ferguson L. [Tahiryuaq]: Hainault 2078 (DAO). Greiner L.: Ponomarenko VI-100B, VI-110, VI-135c, VI-178, VI-189A, VI-315 (CAN). Johansen B.: Gillespie et al. 7914 . Cr.Sinclair : Gillespie et al. 8337 (CAN).Carexmaritima Gunnerus, Figs Inl., Mt. Pelly, Namaycush L., the head of Prince Albert S., Read I., Richard Collinson Inl. and Ulukhaktok . Kuujjua R.: Edlund 644 (CAN), Gillespie et al. 9943 . Inl. (head)Minto : Edlund 132, 176 (CAN), Gillespie et al. 10228 , 10283 . Prince Albert S.: Porsild 17435 (CAN). Inl.Richard Collinson : Edlund 691 (CAN). Ulukhaktok: Edlund 347, 457, 775 (CAN), Porsild 17250 (CAN), Saarela & Bull 1457 . NUNAVUT. Albert Edward B.: Edlund 12746 , Ponomarenko VI-336A (CAN). Cambridge Bay: Bennett et al. 13-0163 , Consaul & Gillespie 1120 (CAN), Edlund & Argus 12692 (CAN), Gillespie et al. 8370, 8491 , Oldenburg 44-924 (CAN), Polunin s.n. (CAN), Porsild 21601 (CAN), Stephens 1142 (CAN). Clouston B.: Gillespie et al. 7750 . Greiner L.: Ponomarenko VI-035C, VI-291A (CAN). Hadley B.: Edlund 113 (CAN). Johansen B.: Gillespie et al. 7917 , 7908 , 8016 . TPOvayok : Stephens 1184 (CAN). Pt.Murray : Gillespie et al. 8196 . Namaycush L.: Edlund 134, 135, 18, 31 (CAN). Pt.Oterkvik : Gillespie et al. 7613 . Read I.: Oldenburg 42-487, 42-492, 43-1009, 43-882, 43-884, 43-966 (CAN), Porsild 17188 (CAN).Carexmembranacea Hook., Figs Inl., Tahiryuaq and Ulukhaktok . C. Wollaston: Edlund 35, 51, 150 (CAN). Kuujjua R.: Edlund 635 (CAN), Gillespie et al. 9727 . Inl. (head)Minto : Edlund 90, 133 (CAN), Gillespie et al. 10036 , 10037 , 9493 , Porsild 17367 (CAN). Prince Albert P.: Oldenburg 54-658 (UBC). Prince Albert S. (head): Edlund 382 (CAN). Inl.Richard Collinson : Edlund 676, 690 (CAN). Tahiryuaq: Edlund 401 (CAN). Ulukhaktok: Edlund 717, 908 (CAN), Oldenburg 42-71, 45-1575, 45-1580 (CAN), Saarela & Bull 1481 , 1499 . Walker B.: Oldenburg 45-1428, 45-1429, 45-1432B (CAN). NUNAVUT. Albert Edward B.: Ponomarenko VI-268 (CAN). Byron B.: Dushenko (UVIC). Cambridge Bay: Bennett et al. 13-0181 , Calder et al. 24166 (DAO), Consaul & Gillespie 1107, 1126 (CAN), Edlund & Argus 12622 (CAN), Gillespie et al. 8361 , Oldenburg 44-918, 44-959 (mixed with Carexsaxatilis) (CAN), Polunin s.n. , Ponomarenko VI-080B (CAN), Porsild 17465, 21514 (CAN), Stephens 1151 (CAN), Thomson s.n. (WIS). Falaise B.: Eriksen et al. 967 (ALA). Ferguson L. [Tahiryuaq]: Hainault 2065, 2066 (DAO), Jones & Hainault 1862 (DAO). Greiner L.: Ponomarenko VI-100F, VI-101a, VI-110A, VI-110B, VI-110C, VI-125, VI-130b, VI-170, VI-225, VI-229, VI-241B, VI-295A, VI-323 (CAN). Johansen B.: Edlund & Argus 12781 , Gillespie et al. 7945 . Mt. Bumpus: Edlund 219 (CAN). Mt. Lady Pelly [Amaaqtuq]: Jones & Hainault 34a (DAO). TPOvayok : Stephens 1162 (CAN). Pt.Murray : Gillespie et al. 8204 . Namaycush L.: Edlund 32 (CAN). Natkusiak P.: Edlund 332 (CAN). Pt.Oterkvik : Gillespie et al. 7555 , 7646 , 7791 . Read I.: Oldenburg 42-488, 43-1007, 43-889, 43-922, 43-944, 45-1578 (CAN). Cr.Sinclair : Gillespie et al. 8300 . Tuktu R.: Gould s.n. (ALA). Washburn L.: Oldenburg 46-2223, 46-2224, 46-2228 (CAN).Carexmicroglochin Wahlenb., Fig. & Asian (C)Previously recorded from Ulukhaktok . ThannheNORTHWEST TERRITORIES. Ulukhaktok: Edlund 771, 822 (CAN). NUNAVUT. Clouston B.: Gillespie et al. 7751 (CAN), 7754 . Johansen B.: Gillespie et al. 8108 .Carexmyosuroides Vill. (Kobresiamyosuroides (Vill.) Fiori.), Figs Inl. [conf.]) for which he did not cite specimens, and noted observations of the species at Walker B. (conf.), the head of Prince Albert S. and Cambridge Bay. He subsequently mapped the species at all these sites . Burns L. (S): Edlund 74 (CAN). Kuujjua R.: Gillespie et al. 9723 , Dutilly 18818 (DAO). Inl. (head)Minto : Edlund 102 (CAN), Gillespie et al. 9495 , 10156 . Natkusiak P.: Edlund 170 (CAN). Inl.Richard Collinson : Edlund 682 (CAN). Tahiryuaq: Edlund 561, 562 (CAN). Ulukhaktok: Edlund 337, 432, 444, 469, 660, 770, 860 (CAN), Saarela & Bull 1417 . Walker B.: Oldenburg 45-1409 (CAN). NUNAVUT. Anderson B.: Edlund & Argus 12719 (CAN). Cambridge Bay: Bennett et al. 13-0241 , Calder et al. 24211 (DAO), Dutilly 28096 (US), Edlund & Argus 12880 (CAN), Gillespie et al. 8360 , Gould s.n. (ALA), Polunin s.n. , Porsild 21609 (CAN), Stephens 1106 . Clouston B.: Gillespie et al. 7742 . Greiner L.: Ponomarenko VI-145 (CAN), Johansen B.: Gillespie et al. 7835 , 8086 , 8147 , 7909 . Mt. Bumpus: Edlund 232, 42 (CAN). Namaycush L.: Edlund 42, 164 (CAN). Pt.Oterkvik : Gillespie et al. 7487 , 7547 , 7552 , 7618 , 7579 , 7581 (CAN). Cr.Sinclair : Gillespie et al. 8303 . Read I.: Oldenburg 43-1010, 43-885, 43-891 (CAN), Porsild 17191 (CAN). Washburn L.: Oldenburg 46-2221 (CAN).Carexnardina Fr. (C.nardinavar.atriceps Kük.), Fig. Inl., Falaise B., Ferguson L., Hadley B., Kuujjua R. and the head of Minto Inl. Elsewhere in the Canadian Arctic recorded from Baffin, Banks, Devon, Ellesmere, Mansel, Melville, Nottingham and Southampton islands, as well as mainland sites . Kuujjua R.: Gillespie et al. 9966 . Inl. (head)Minto : Gillespie et al. 10221 , 9506 , 9789 . Ulukhaktok: Svoboda 745004 . Walker B.: Porsild 17485 (CAN). NUNAVUT. Falaise B.: Eriksen et al. 997 (ALA). Ferguson L. [Tahiryuaq]: Bennett et al. 14-0430 (BABY). Hadley B.: Edlund 81 (CAN). Mt. Bumpus: Edlund 274 (CAN).Carexpetricosa Dewey subsp. petricosa (Carexpetricosavar.petricosa), Figs & North America (NE)et al. (2007) based on the map in Inl., the head of Minto Inl. and Kuujjua R. At the last three sites this rhizomatous taxon grew in dry rocky tundra and slopes typically associated with Carexrupestris and Dryasintegrifolia. On the mainland this western taxon . Kuujjua R.: Gillespie et al. 9722 , 9988 . Inl. (head)Minto : Gillespie et al. 10097 . Walker B.: Oldenburg 45-1423 (CAN), Porsild 17486 (CAN). NUNAVUT. Falaise B.: Eriksen et al. 1000 (ALA).Carexrariflora (Wahlenb.) Sm., Figs C.bicolor. Newly recorded from Boot Inl., Ferguson L., Kuujjua R., Mt. Bumpus and Oterkvik Pt. Elsewhere in the Canadian Arctic recorded from Baffin, Coats and Southampton islands and mainland sites . Kuujjua R.: Gillespie et al. 9785 , 9944 (CAN). Ulukhaktok: Edlund 517, 730, 759, 808 (CAN), Porsild 17253 (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 14-0368 , 13-0238 , Edlund & Argus 12697 (CAN), Gillespie et al. 8408 , Polunin s.n. , Stephens 1131 (CAN). Falaise B.: Eriksen et al. 948 (ALA). Ferguson L. [Tahiryuaq]: Hainault 1870 (DAO). Johansen B.: Gillespie et al. 7918 , 8112 . Mt. Bumpus: Edlund 249 (CAN). Pt.Oterkvik : Gillespie et al. 7650 .Carexrupestris All., Figs Inl., Mt. Bumpus, Namaycush L., Natkusiak P., the head of Prince Albert S., Read I., Richard Collinson Inl., Storkerson P. and Ulukhaktok . C. Wollaston: Edlund 34, 44 (CAN). Kuujjua R.: Gillespie et al. 9721 . Inl. (head)Minto : Edlund 65 (CAN), Gillespie et al. 10222 (CAN). Natkusiak P.: Edlund 110 (CAN). Tahiryuaq: Edlund 560 (CAN). Ulukhaktok: Bandringa 312 , Dutilly 18655 (US), Edlund 339, 470, 716, 856 (CAN), Oldenburg 42-99E (CAN), Porsild 17254 (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 13-0187 , Calder et al. 24151 (DAO), Edlund & Argus 12634 (CAN), Gillespie et al. 8364 , Gould s.n. (ALA), Oldenburg 44-912 (CAN), Polunin s.n. , Porsild 21604 (CAN), Stephens 1105 . Mts.Colville : Gillespie et al. 7762 (CAN). Ferguson L. [Tahiryuaq]: Hainault 2133 (DAO). Greiner L.: Ponomarenko VI-035B, VI-119A, VI-121C, VI-172b (CAN). Hadley B.: Edlund 30, 141 (2 sheets) (CAN). Johansen B.: Gillespie et al. 7839 (CAN), 7989 . Mt. Bumpus: Edlund 236, 173, 272 (CAN). TPOvayok : Ponomarenko VI-284 (CAN), Stephens 1186 . Namaycush L.: Edlund 41, 122, 167 (CAN). Pt.Oterkvik : Gillespie et al. 7493 , 7509 , 7674 . Storkerson P.: Edlund 188 (CAN). Read I.: Oldenburg 43-987 (CAN), Porsild 17189 (CAN).Carexsaxatilis L.  Kalela, C.physocarpa J.Presl & C.Presl), Figs Inl. and Tahiryuaq . Kuujjua R.: Gillespie et al. 9784 . Inl. (head)Minto : Gillespie et al. 9494 , 10034 , Porsild 17368 (CAN). Prince Albert S. (head): Porsild 17437 (CAN). Tahiryuaq: Edlund 402, 403, 404 (CAN). Ulukhaktok: Edlund 491 (CAN). Walker B.: Oldenburg 45-1431 (CAN). Cr.NUNAVUT. “30-Mile ”: Bennett et al. 14-0340 (UBC). Albert Edward B.: Ponomarenko VI-266b (CAN). Anderson B.: Edlund & Argus 12712 , 12726 . Cambridge Bay: Bennett et al. 13-0251 , Calder et al. 24169 (DAO), Edlund & Argus 12684 , Gillespie et al. 8362 , 8405 , Oldenburg 44-959 , Polunin s.n. , Ponomarenko VI-084 (CAN), Smith & Sweatman 34B , Stephens 1023, 1059 (CAN). Ferguson L. [Tahiryuaq]: Hainault 2012, 2019 (DAO). Greiner L.: Ponomarenko VI-109, VI-124a, VI-166B, VI-176, VI-238, VI-241, VI-295B, VI-303 (CAN). Hadley B.: Edlund 117 (CAN). Johansen B.: Gillespie et al. 8047 . Jonnessee L.: Edlund & Argus 12780 . Mt. Bumpus: Edlund 250 (CAN). Mt. Lady Pelly [Amaaqtuq]: Hainault 1843 (DAO). Cr.Sinclair : Gillespie et al. 8245 , 8301 .Carexscirpoidea Michx. subsp. scirpoidea, Figs Inl., Mt. Bumpus, Namaycush L., the head of Prince Albert S., Richard Collinson Inl. and Ulukhaktok , 9669 . C. Wollaston: Edlund 9, 68, 69 (CAN). Diamond Jenness P.: Edlund 633 (CAN). Kuujjua R.: Gillespie et al. 9780 , 9781 . Inl. (head)Minto : Edlund 92 (2 sheets), 130 (CAN), Gillespie et al. 9502 , 9503 . Prince Albert S. (head): Edlund 400 . Inl.Richard Collinson : Edlund 171, 181 (CAN). Ulukhaktok: Bliss s.n. (ALTA), Edlund 311, 342, 726 (CAN), Oldenburg 42-56, 42-66, 45-1577 (CAN), Porsild 17255 (CAN), Saarela & Bull 1498 . Walker B.: Oldenburg 46-2226 (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 13-0186 , Calder et al. 24152 (DAO), Consaul & Gillespie 1111 (CAN), Gillespie et al. 8363 , Gould s.n. (ALA), Oldenburg 44-906, 44-915 (CAN), Polunin s.n. (CAN), Ponomarenko VI-060, VI-080f (CAN), Porsild 17466 (CAN), Stephens 953 (ID), 999, 1001 (KSTC), 998 , 959, 1189, 1190 (CAN), Washburn 13 (CAN). Clouston B.: Gillespie et al. 7743 . Mts.Colville : Gillespie et al. 7764 . Ferguson L. [Tahiryuaq]: Hainault 2139 (DAO). Greiner L.: Ponomarenko VI-172, VI-119B, VI-213, VI-225A, VI-239, VI-295 (CAN). Hadley B.: Edlund 82, 98 (CAN). Johansen B.: Gillespie et al. 7834 , 8160 (CAN). “Long L.”: Lambert s.n. (CAN). Mt. Bumpus: Edlund 172, 282 (CAN). TPOvayok : Stephens 999, 1001 (KSTC). Pt.Murray : Gillespie et al. 8203 . Namaycush L.: Edlund 123, 124 (CAN), Edlund & Roncato-Spencer 106 (CAN). Pt.Oterkvik : Gillespie et al. 7470 , 7474 (CAN), 7502 (CAN). Read I.: Oldenburg 42-481, 42-490, 45-1586 (CAN). Cr.Sinclair : Gillespie et al. 8304 . “Trunsky L.”: Bennett et al. 14-0388 (UBC). Washburn L.: Oldenburg 46-2222 (CAN).Carexsimpliciuscula subsp. subholarctica (T.V.Egorova) Saarela (Kobresiasimpliciusculasubsp.subholarctica T.V.Egorova), Figs Inl., Walker B. and Tahoe L. . Kuujjua R.: Gillespie et al. 9728 . Inl. (head)Minto : Gillespie et al. 9490 , Porsild 17372 (CAN). Prince Albert S. (head): Edlund 406 (CAN). Ulukhaktok: Edlund 338, 339 (CAN), 468, 831 , Oldenburg 42-99D, 45-1562 (CAN), Saarela & Bull 1500 . Walker B.: Oldenburg 45-1408 (CAN), Porsild 17488 (CAN). NUNAVUT. Albert Edward B.: Ponomarenko VI-251, VI-265 (CAN). Cambridge Bay: Bennett et al. 13-0557 (CAN), 13-0562 , Gillespie et al. 8410 , Stephens 1132 (KSTC). Falaise B.: Eriksen et al. 947 (ALA). Ferguson L. [Tahiryuaq]: Hainault & Jones 1863, 1867 (DAO). Greiner L.: Ponomarenko VI-100G, VI-114a, VI-135b, VI-152, VI-173, VI-235, VI-301 (CAN). Johansen B.: Gillespie et al. 7946 , 8019 . Mt. Bumpus: Edlund 283 (CAN). Pt.Murray : Gillespie et al. 8209 . Cr.Sinclair : Gillespie et al. 8343 (CAN). Tahoe L.: Porsild 17452 (CAN).Carexsubspathacea Wormsk., Figs Inl., Richard Collinson Inl., Storkerson P., Ulukhaktok and Read I. (Porsild obs.)  . Thannhend sites .NORTHWEST TERRITORIES. Kuujjua R.: Gillespie et al. 9941 . Inl. (head)Minto : Gillespie et al. 10239 (CAN), Porsild 17369 (CAN). Inl.Richard Collinson : Edlund 692 (CAN). Ulukhaktok: Edlund 348 (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 13-0271 , Edlund & Argus 12871 , Gillespie et al. 8379 , Polunin s.n. (CAN), Porsild 21605 (CAN), Stephens 1153, 1274 (CAN). Hadley B.: Edlund 130, 315 (CAN). Johansen B.: Gillespie et al. 8113 . Pt.Murray : Gillespie et al. 8192 , 8194 . Pt.Oterkvik : Gillespie et al. 7633 (CAN). Storkerson P.: Edlund 306 (CAN).Carexursina Dewey, Figs Inl., Read I. and Ulukhaktok , Gillespie et al. 9664 . C. Wollaston: Edlund 14 (CAN). Kuujjua R.: Gillespie et al. 9942 . Inl. (head)Minto : 10274 , 10238 , Porsild 17370 (CAN). Ulukhaktok: Dutilly 18653 , Edlund 349 (CAN), Saarela & Bull 1450 . NUNAVUT. Cambridge Bay: Bennett 14-0302 (UBC), 13-0242 , Dutilly 28084 (US), Gillespie et al. 8484 , 8375 (CAN), Polunin s.n. (CAN), Porsild 21606 (CAN), Scotter s.n. (ALTA). Collinson P.: Edlund & Argus 12757 (CAN). Hadley B.: Edlund 313 (CAN). Johansen B.: Gillespie et al. 8021 . Pt.Murray : Gillespie et al. 8198 . Pt.Oterkvik : Gillespie et al. 7619 , 7706 . Storkerson P.: Edlund 298 (CAN).Carexvaginata Tausch, Figs Inl., Falaise B., Ferguson L., Greiner L., Kuujjua R. and Sinclair Cr. Elsewhere in the Canadian Arctic recorded from southern Baffin, Banks and Southampton islands, and across the mainland , Ulukhaktok and southwestern Wollaston P. . Thannhemainland .Inl.NORTHWEST TERRITORIES. Boot : Gillespie et al. 9665 . Kuujjua R.: Gillespie et al. 9787 . Ulukhaktok: Edlund 488, 729 (CAN), Oldenburg 42-62, 45-1571 (CAN), Porsild 17828 (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 13-0191 , Consaul & Gillespie 1125 (CAN), Edlund 746 (CAN), Gillespie et al. 8369 , Gould s.n. (ALA), Ponomarenko VI-086D, VI-089B, VI-090C (CAN). Falaise B.: Eriksen et al. 1001 (ALA). Ferguson L. [Tahiryuaq]: Hainault 2064 (DAO). Greiner L.: Ponomarenko VI-034, VI-049, VI-100A, VI-101, VI-114b, VI-114c, VI-179, VI-236 (CAN). Johansen B.: Gillespie et al. 7877 , 7953 . Cr.Sinclair : Gillespie et al. 8342 . Wollaston P. (SW): Edlund 522 (CAN).Eriophorum : Hainault 2076 (DAO). Greiner L.: Ponomarenko VI-180 (CAN). Kagloryuak R.: Edlund & Argus 12829 (CAN).Eriophorumcallitrix Cham., Figs Inl., Tahiryuaq, Tahoe L., Ulukhaktok and Washburn L. (Edlund & Argus 12829) mapped from east of the head of Prince Albert S. (E.brachyantherum. Inl. (conf.) and Surrey L. Newly recorded from “30-Mile Cr.”, Colville Mts., Greiner L., Kuujjua R., Oterkvik Pt. and “Trunsky L.” Elsewhere in the Canadian Arctic recorded from Baffin, Banks, Devon, Somerset and Southampton islands and mainland sites , 9899 , 9772b . Inl. (head)Minto : Edlund 174 , Gillespie et al. 10103 , 10288 . Inl.Richard Collinson : Edlund 671 (CAN). Tahiryuaq: Edlund 392 (CAN). Ulukhaktok: Edlund 824 (CAN), Porsild 17257 , 17258 (CAN). Cr.NUNAVUT. “30-Mile ”: Bennett et al. 14-0344 (CAN). Byron B.: Dushenko 15 (UVIC). Cambridge Bay: Stephens 1201 . Mts.Colville : Gillespie et al. 7760 . Greiner L.: Ponomarenko VI-106 (CAN), Mt. Bumpus: Edlund 190, 269 (CAN). Namaycush L.: Edlund 168 (CAN). Pt.Oterkvik : Gillespie et al. 7477 . Cr.Sinclair : Gillespie et al. 8247 . Tahoe L.: Porsild 17451 (CAN). “Trunsky L.”: Bennett et al. 14-0403 (CAN). Washburn L.: Oldenburg 46-2230 (CAN), Porsild 17456 (CAN).Eriophorumrusseolum subsp. albidum (F.Nyl.) Väre (E.russeolumsubsp.leiocarpum M.S.Novos. nom. illeg.), Fig. Carexaquatilis–Drepanocladus community. Elsewhere in the Canadian Arctic recorded from Baffin, Banks and Bylot islands and mainland sites .Eriophorumscheuchzeri HoppeInl., Richardson I. and Johansen and Hadley B.The collections listed below have not been determined to subspecies and are not mapped. NORTHWEST TERRITORIES. Ulukhaktok: Bliss s.n. . NUNAVUT. Cambridge Bay: Bennett 13-0220 , Bennett et al. 14-0310 (UBC), Smith & Sweatman 42 . Tuktu R.: Gould s.n. (ALA).Eriophorumscheuchzeri subsp. arcticum M.S.Novos., Figs Inl., C. Wollaston, Ferguson L., Greiner L., Hadley B., Johansen B., Mt. Bumpus, “Oldenburg L.”, Oterkvik Pt. and Sinclair Cr. Elsewhere in the Canadian Arctic recorded from Axel Heiberg, Baffin, Banks, Coast, Devon, Ellesmere, Mansel, Melville, Nottingham, Prince Charles, Prince Patrick, Resolution, Somerset and Southampton islands . C. Wollaston: Edlund 63 (CAN). Kuujjua R.: Dutilly 19798 (DAO), Gillespie et al. 9857 . Inl. (head)Minto : Gillespie et al. 10035b , 9861 . “Oldenburg L.”: Oldenburg 45-1374 (CAN). Tahiryuaq: Edlund 388 (CAN). Ulukhaktok: Edlund 498 (CAN), Gray & Gibbard 32 (DAO). NUNAVUT. Cambridge Bay: Gillespie et al. 8407 , Polunin s.n. , Stephens 1036 , Sweatman & Smith 11A (DAO). Ferguson L. [Tahiryuaq]: Hainault 1976 (DAO), Jones 4 (DAO). Greiner L.: Ponomarenko VI-187, VI-318 (CAN). Hadley B.: Edlund 65, 145 (CAN). Johansen B.: Gillespie et al. 7911 (CAN). Mt. Bumpus: Edlund 280 (CAN). Namaycush L.: Edlund 131, 136, 28 (CAN). Pt.Oterkvik : Gillespie et al. 7477 , 7554 , 7785 . Cr.Sinclair : Gillespie et al. 8298 , Gillespie et al. 8246 . Storkerson P.: Edlund 189, 288, 293 (CAN).Eriophorumscheuchzeri Hoppe subsp. scheuchzeri, Fig. Inl., a site SE of the head of Prince Albert S., Richard Collinson Inl. and Storkerson P. NORTHWEST TERRITORIES. Minto : Edlund 165 (CAN). Inl.Richard Collinson : P. Jenness 11 (CAN), Stretton 211 (DAO). NUNAVUT. Cambridge Bay: Oldenburg 44-890B (CAN). Collinson P.: Edlund & Argus 12768 (CAN). Namaycush L.: Edlund & Roncato-Spencer 22 (CAN). Prince Albert S. (head): Edlund 91 (CAN). Storkerson P.: Edlund 310 (CAN).Eriophorumtriste (Th.Fr.) Hadač & Á.Löve (E.angustifoliumsubsp.triste (Th.Fr.) Hultén), Figs Inl., Mt. Bumpus, Namaycush L. and Ulukhaktok. Inl., Colville Mts., Ferguson L., Greiner L., Kuujjua R., Natkusiak P., “Oldenburg L.”, the head of Prince Albert S., Storkerson P., Walker B., Washburn L. and Wollaston P. Widespread across the Canadian Arctic Archipelago and across the mainland . Kuujjua R.: Edlund 641 (CAN), Gillespie et al. 9772a . Inl. (head)Minto : Edlund 143 (CAN), Gillespie et al. 9459 , Gillespie et al. 10287 . Natkusiak P.: Edlund 158 (CAN). “Oldenburg L.”: Oldenburg 45-1376 (CAN). Prince Albert S. (head): Bezener 45 (DAO), Weerstra 28, 29 (DAO). Ulukhaktok: Dutilly 18651 (US), Edlund 445 (CAN), Oldenburg 42-83A, 45-1587 (CAN), Saarela & Bull 1505 , Svoboda 745027 (UBC), Walker B.: Oldenburg 45-1442 (CAN). NUNAVUT. Cambridge Bay: Porsild 21607 (CAN), Stephens 964 , 1183 , Washburn 14 (CAN). Mts.Colville : Gillespie et al. 7759 . Eastern Victoria I.: Lee & Kittle s.n. (DAO). Falaise B.: Eriksen et al. 966 (ALA). Ferguson L. [Tahiryuaq]: Hainault 1974, 2070, 2137 (DAO). Greiner L.: Ponomarenko VI-227 (CAN). Hadley B.: Edlund 37, 102 (CAN). Johansen B.: Gillespie et al. 7944 . Mt. Bumpus: Edlund 189 (CAN). TPOvayok : Gould s.n. (ALA), Stephens 864 . Namaycush L.: Edlund & Roncato-Spencer 19, 55, 63 (CAN). Pt.Oterkvik : Gillespie et al. 7480 . Cr.Sinclair : Gillespie et al. 8341 . Storkerson P.: Edlund 174 (CAN). “Trunsky L.”: Bennett et al. 14-0402 . Washburn L.: Oldenburg 46-2231 (CAN). Wollaston P.: D. Jenness 659 (CAN).Eriophorumvaginatum L. subsp. vaginatum, Figs Inl., the north side of Prince Albert S. (Porsild obs.), Tahoe L. (Porsild obs.) and Ulukhaktok  Hultén.Previously recorded from Cambridge Bay, “Long L.”, the head of Minto ukhaktok . Newly rnd sites . In the Inl.NORTHWEST TERRITORIES. Boot : Gillespie et al. 9547 . Kuujjua R.: Gillespie et al. 9768 . Inl. (head)Minto : Gillespie et al. 10033 , Porsild 17371 (CAN). Inl.Richard Collinson : Edlund 546 (CAN). Ulukhaktok: Dutilly 18650 , Edlund 712 (CAN), Porsild 17259 (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 13-0301 . Ferguson L. [Tahiryuaq]: Hainault 1957 (DAO). Johansen B.: Gillespie et al. 7948 , 7949 . “Long L.”: Lambert s.n. .Poaceae : Ducruc s.n. (DAO), Hainault 2031 (DAO). Greiner L.: Ponomarenko VI-296, VI-306CAN). Hadley B.. Johansen B.: Gillespie et al. 7838 . TPOvayok : Gould s.n. (ALA). Pt.Murray : Gillespie et al. 8210 . Namaycush L.: Edlund 10, s.n. (CAN), Edlund & Roncato-Spencer 48, 61 (CAN), Roncato-Spencer 16 (CAN). Natkusiak P.: Edlund 75, 126 (CAN). Pt.Oterkvik : Gillespie et al. 7568 , 7615 . Read I.: Oldenburg 42-483, 43-947 (CAN), Porsild 17186 (CAN), Ross 11 (ALTA). Cr.Sinclair : Gillespie et al. 8236 . Storkerson P.: Edlund 184, 212 (CAN). Washburn L.: Oldenburg 46-2188 (CAN).Anthoxanthum : Ducruc s.n. (QFA). Greiner L.: Ponomarenko VI-186 (CAN). Hadley B.: Edlund 127, s.n. (CAN). Johansen B.: Gillespie et al. 7905 . Pt.Murray : Gillespie et al. 8191 . Namaycush L.: Edlund 26, 127 (CAN). Pt.Oterkvik : Gillespie et al. 7614 . Read I.: Oldenburg 43-903 (CAN). Cr.Sinclair : Gillespie et al. 8307 . Storkerson P.: Edlund 235, 286, 303 (CAN).Anthoxanthummonticola subsp. alpinum (Sw. ex Willd.) Soreng  Roem. & Schult.), Fig. This acidophile was previously recorded from Cambridge Bay, Ulukhaktok and a site on south-central Victoria I. . We haveNUNAVUT. Cambridge Bay: Consaul & Gillespie 1135 (CAN). Ferguson L. [Tahiryuaq]: Hainault 1953 . Johansen B.: Gillespie et al. 7985 , 7846 .Anthoxanthummonticola (Bigelow) Veldkamp subsp. monticola (A.monticolasubsp.orthanthum (T.J.Sørensen) G.C.Tucker, Hierochloë orthantha T.J.Sørensen), Fig. Dryasintegrifolia–Carexrupestris–Cassiopetetragona dominated tundra over limestone morainal till modified with marble and some granite, associated with Salixarctica, Carexvaginata, C.fuliginosasubsp.misandra, Pediculariscapitata, and Vacciniumuliginosum. At the other site it was growing in a nutrient enriched crevice of a marbled limestone ridge, with Saxifragatricuspidata, Potentilla, Luzulaconfusa, Carexrupestris, Sabulinarubella, and Drabacinerea. This is a northeastern North American taxon that, aside from the collection reported here, which is a considerable range extension, reaches the eastern side of Hudson Bay , 14-0415 .Anthoxanthumnitens (Weber) Y.Schouten & Veldkamp subsp. nitens (Hierochloeodorata (L.) Wahlenb.), Fig. Anthoxanthumhirtum (syns. Hierochloehirta (Schrank) Borbás, H.odoratasubsp.hirta (Schrank) Tzvelev) in their concept of A.nitens (syn. H.odorata), while others recognized them as distinct species . The Ulukhaktok record is far out of the typical range of the species.Recorded from Ulukhaktok by  species ; we follLabrador  and the NORTHWEST TERRITORIES. Ulukhaktok: Porsild 17240 (CAN).Arctagrostislatifolia (R.Br.) Griseb. subsp. latifolia, Figs Inl., N of a large lake in the Ekalluk River system about 90 km NNE of Cambridge Bay, Prince Albert S., Tahoe L., Ulukhaktok and Walker B. . Burns L. (S): Edlund 61b, 23, 95 (CAN). C. Wollaston: Edlund 56 (CAN). Kuujjua R.: Dutilly 18814b , Gillespie et al. 9770 , 9983 . Inl. (head)Minto : Edlund 172 (CAN), Gillespie et al. 10268 , 9486 , 10289 , Porsild 17354 (CAN). “Oldenburg L.”: Oldenburg 45-1366 (CAN). Inl.Richard Collinson : Edlund 675 (CAN), Stretton 209, 210 (DAO). Ulukhaktok: Dutilly 18648 , Edlund 340, 367A, 472, 473, 826, 870, 884 (CAN), Oldenburg 42-75, 45-1589 (CAN), Saarela & Bull 1476 , Salokangas 25 . Walker B.: Oldenburg 45-1449 (CAN), Porsild 17482 (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 13-0197 , Beschel 13480 (CAN), Edlund & Argus 12615, 12636, 12637 (CAN), Fortier 10 (CAN), Gillespie et al. 8373 , 8402 , 8391 (CAN), Gould s.n. (ALA), Porsild 21584 (CAN), Oldenburg 44-884, 44-894, 44-896, 44-963 (CAN), Polunin s.n. (CAN), Saarela 5301 (CAN), Smith & Sweatman 33 (CAN), Smith & Sweatman 35 (DAO), Stephens 1095 (CAN), Sutton 856 (CAN). Clouston B.: Gillespie et al. 7741 . Ekalluk R.: Edlund & Argus 12740 (CAN), Lee & Kittle s.n. (CAN). Ferguson L. [Tahiryuaq]: Ducruc s.n. (QFA), Hainault 1873 (DAO), 2087 . Greely Haven: Fortier 97 (CAN). Greiner L.: Ponomarenko VI-229A (CAN). Hadley B.: Edlund 68, 116, 123 (CAN). Johansen B.: Gillespie et al. 7875 . “Long L.”: Lambert s.n. (CAN). Mt. Bumpus: Edlund 195 (CAN). TPOvayok : Dutilly 28090 . Namaycush L.: Edlund & Roncato-Spencer 66 (CAN). Natkusiak P.: Edlund 106, 161 (CAN). Pt.Oterkvik : Gillespie et al. 7544 , 7553 . Read I.: Oldenburg 43-1012, 43-1022, 43-948 (CAN). Cr.Sinclair : Gillespie et al. 8302 . Storkerson P.: Edlund 177, 280, 346 (CAN), Stretton 227 (DAO). Washburn L.: Edlund & Argus 12793 (CAN), Oldenburg 46-2189, 46-2192, 46-2193 (CAN).Arctophilafulva (Trin.) Andersson (Colpodiumfulvum (Trin.) Griseb.), Figs Previously recorded from Cambridge Bay, Ferguson L., Kuujjua R., the head of Prince Albert S., Storkerson P. and Ulukhaktok . ThannhePt.NORTHWEST TERRITORIES. SE of Armstrong : Edlund 588 (CAN). Kuujjua R.: Dutilly 18805 , Edlund 628 (CAN). Prince Albert S. (head): Porsild 17430 (CAN). Ulukhaktok: Edlund 512, 515, 756 (CAN), Porsild 17237 (CAN). Walker B.: Oldenburg 45-1447 (CAN). NUNAVUT. Albert Edward B.: Ponomarenko VI-254 (CAN). Cambridge Bay: Bennett 13-0225 , Dutilly 37148 (QFA), Gillespie et al. 8419 , 8441 , Oldenburg 44-894, 44-951 (CAN), Polunin s.n. , Porsild 21585 (CAN), Stephens 1125 (CAN). Ferguson L. [Tahiryuaq]: Hainault 1931, 2015 (DAO). Greiner L.: Ponomarenko VI-188, VI-341A (CAN). Hadley B.: Edlund 66 (CAN). Read I.: Oldenburg 43-1021 (CAN). Storkerson P.: Edlund 291, 301 (CAN). Wollaston P.: Oldenburg 54-500 .Bromuspumpellianus Scribn., Fig. Inl. and along the Kazan R.  , 9542 (CAN), 9658 . Kuujjua R.: Edlund 663 (CAN), Gillespie et al. 9717 . Inl. (head)Minto : Gillespie et al. 10015 , 10158 , Porsild 17355 (CAN). Prince Albert S. (N): Edlund 446 (CAN). Ulukhaktok: Edlund 284, 341, 486, 845, 852, 883 (CAN), Gray & Gibbard 42 (DAO), Oldenburg 42-78 (CAN), Porsild 17238 (CAN), Saarela & Bull 1475 . Walker B.: Oldenburg 45-1450 (CAN). NUNAVUT. Clouston B.: Gillespie et al. 7740 . Johansen B.: Gillespie et al. 8115 . Mt. Bumpus: Edlund 233 (CAN). Pt.Oterkvik : Gillespie et al. 7665 , 7809 Calamagrostisstricta subsp. groenlandica (Schrank) Á.Löve (C.neglectasubsp.groenlandica (Schrank) Matuszk., C.strictasubsp.stricta s.l.), Figs Arctousrubra, Astragalusalpinus, Dryasintegrifolia and Physariaarctica. Elsewhere in the Canadian Arctic recorded from Baffin, Banks, Melville and Prince Patrick islands . NUNAVUT. Johansen B.: Gillespie et al. 8052 , 7996 , 8053 (CAN). Read I.: Oldenburg 43-898, 43-938, 43-1020 (mixed with Trisetumspicatum) (CAN).Deschampsia : Jones 6 (DAO). Hadley B.: Edlund 132, 235, 316, 332 (CAN). Namaycush L.: Edlund 38, 141, 143 (CAN), Edlund & Roncato-Spencer 50, 70 (CAN). Natkusiak P.: Edlund 111, 122 (CAN). Pt.Oterkvik : Gillespie et al. 7610 . Prince Albert S. (head): Edlund & Argus 12821 (CAN), Edlund 101 (CAN). Cr.Sinclair : Gillespie et al. 8309 .Deschampsiacespitosa (L.) P. Beauv. subsp. cespitosa, Fig. Dryas tundra on silty clay terraces.Newly recorded for Victoria I. and the Canadian Arctic Archipelago. The specimen was gathered at the NW end of Washburn L., growing in NUNAVUT. Washburn L.: Edlund & Argus 12796 (CAN).Deschampsiasukatschewii (Popl.) Roshev. (D.pumila (Griseb.) Ostenf., nom. illeg.), Figs Newly recorded for Victoria I. where known from a single collection. We collected the taxon along the base of cliffs on the south shore of “Fish L.” on the lower Kuujjua R., where it grew in a hummocky, moderately well-drained meadow. Elsewhere in the Canadian Arctic Archipelago recorded from Banks, Baffin, Devon, Ellesmere, Prince Charles and Prince Patrick islands and a few mainland sites . This spNORTHWEST TERRITORIES. Kuujjua R.: Gillespie et al. 9903 Dupontiafisheri R.Br. (D.fisherisubsp.psilosantha (Rupr.) Hultén), Fig. Inl., Storkerson P. and Ulukhaktok . Kuujjua R.: Gillespie et al. 9769 , 9939 . Inl. (head)Minto : Edlund 149 (CAN), Gillespie et al. 10041 , 10271 , Porsild 17356, 17357 (CAN). Inl.Richard Collinson : Edlund 687 (CAN). Ulukhaktok: Edlund 234, 304, 512A, 513, 514, 653, 765, 898 (CAN), Porsild 17239 (CAN), Ross 21 (ALTA), Saarela & Bull 1447 . Walker B.: Oldenburg 45-1445, 45-1446 (CAN). NUNAVUT. Albert Edward B.: Ponomarenko VI-250 (CAN). Cambridge Bay: Bennett 13-0222 , 13-0664 (CAN), Boulva 65-41 (QFA), Calder et al. 24192 (DAO), Consaul & Gillespie 1114 (CAN), Edlund & Argus 12616 (CAN), Gillespie et al. 8372 , Oldenburg 44-896, 44-963 (CAN), Polunin s.n. , Porsild 21586 (CAN), Saarela & Teeter 5282 (CAN), Stephens 1138, 1159, 1200 (CAN). Clouston B.: Gillespie et al. 7749 . Ferguson L. [Tahiryuaq]: Hainault 2004 (DAO), 2016 (UAC). Greiner L.: Ponomarenko VI-107, VI-140B, VI-147, VI-185, VI-203D, VI-293 (CAN). Hadley B.: Edlund 67 , 321 (CAN). Johansen B.: Gillespie et al. 8014 , 8110 . TPOvayok : Gould s.n. (ALA). Pt.Murray : Gillespie et al. 8193 . Namaycush L.: Edlund 132 (CAN). Pt.Oterkvik : Gillespie et al. 7679 , 7617 (CAN), 7684 (CAN). Read I.: Oldenburg 42-482, 43-1026, 43-1027 (CAN). Cr.Sinclair : Gillespie et al. 8235 . Storkerson P.: Edlund 172 , Edlund 302, 348 (CAN). Tuktu R.: Gould s.n. (ALA). Washburn L.: Oldenburg 46-2193 (CAN).Elymus : Bennett et al. 14-0425b (od), Hainault 1960, 2141 (DAO). Greiner L.: Ponomarenko VI-277 (CAN). Hadley B.: Edlund 62, 138, 154 (CAN). Johansen B.: Gillespie et al. 7833 , 7956 , 8075 (CAN). Mt. Bumpus: Edlund 281, 422 (CAN). TPOvayok : Gillespie et al. 8435 , Stephens 1187 . Pt.Murray : Gillespie et al. 8212 . Namaycush L.: Edlund 15, 16 (CAN). Pt.Oterkvik : Gillespie et al. 7621 , 7546, 7580, 7642 (CAN). Prince Albert S. (head): Edlund 88, 103 (CAN). Read I.: Oldenburg 42-481A, 43-1017, 43-1018, 43-1018A, 43-902 (CAN). Cr.Sinclair : Gillespie et al. 8223 , 8243 , Gillespie et al. 8249 . Storkerson P.: Edlund 204, 339 (CAN). Tuktu R.: Gould s.n. (ALA).Festucabrachyphylla Schult. & Schult.f. subsp. brachyphylla, Fig. Inl., the head of Prince Albert S. (Porsild obs.), Read I. (Porsild obs.), and Ulukhaktok . Inl. (head)Minto : Gillespie et al. 10095a . Inl.Richard Collinson : Edlund 168 (CAN). Ulukhaktok: Edlund 855 (CAN), Oldenburg 45-1593 (CAN), Saarela & Bull 1468 . NUNAVUT. Albert Edward B.: Ponomarenko VI-338, VI-335B (CAN). Byron B.: Dushenko 13 (UVIC). Cambridge Bay: Bennett et al. 13-0213 (chars), Edlund & Argus 12644 (CAN), Gillespie et al. 8456 , Polunin s.n. (CAN), Ponomarenko VI-077 (CAN). Ferguson L. [Tahiryuaq]: Bennett et al. 14-0425a (UBC). Greiner L.: Ponomarenko VI-161A (CAN). Johansen B.: Gillespie et al. 7832 , 7988 , 8083 , 8161 . Pt.Murray : Gillespie et al. 8233 . Pt.Oterkvik : Gillespie et al. 7584 , 7639 , 7681 . Cr.Sinclair : Gillespie et al. 8228 , 8347 . Storkerson P.: Edlund 194 (CAN). Tuktu R.: Gould s.n. (ALA).Festucahyperborea Holmen ex Fred., Figs Inl., Richardson I. and Ulukhaktok; the Richardson I. record, if confirmed, would be the southernmost record in the western Canadian Arctic. Dryasintegrifolia and Oxyriadigyna. These collections and the one from the Namaycush L. area close a distribution gap between southern Banks I. and Steffanson I., from which numerous occurrences are known , Gillespie et al. 9863 , 9952 (CAN). NUNAVUT. Namaycush L.: Edlund 36a (CAN). Storkerson P.: Edlund 175 (CAN).Festucarubra subsp. arctica (Hack.) Govor.  Hultén), Figs F.rubravar.arenaria (Osbeck) Fr. (a non-Arctic taxon) (F.rubra L. (F.rubrasubsp.richardsonii (Inl. (conf.), Mt. Pelly, Richardson I. and Surrey L. Newly recorded from Boot Inl., Byron B., Kuujjua R., Murray Pt., Namaycush L., Oterkvik Pt. and Read I. The single site known in the Cambridge Bay area is west of the hamlet in the hills above Long Pt., where the species grew on a calcareous kame in Dryasintegrifolia–Salixarctica tundra with Potentilla (sect.Rubricaules), Poaarctica, P.glauca, Saxifragatricuspidata and Oxytropisarctica. Elsewhere in the Canadian Arctic known from Banks and Melville islands as well as mainland sites from Yukon to northern Quebec  , 1964, Frubra L.  and F.rardsonii . Thannhen Quebec .Inl.NORTHWEST TERRITORIES. Boot : Gillespie et al. 9653 , 9652 . Kuujjua R.: Edlund 656 (CAN), Gillespie et al. 9938 , 9913 . Inl. (head)Minto : Gillespie et al. 10223 . Prince Albert S. (head): Porsild 17431 (CAN). Ulukhaktok: Edlund 342, 479, 493, 768, 871, 886, 900, 901, 367B, 789B (CAN), Saarela & Bull 1443 . NUNAVUT. Byron B.: Edlund & Argus 12849 (CAN). Cambridge Bay: Bennett et al. 13-0311 . Clouston B.: Gillespie et al. 7744 , Saarela & Teeter 5297 (CAN). Johansen B.: Gillespie et al. 7837 , 7885 , 7884 (CAN), 8117 . Pt.Murray : Gillespie et al. 8197 . Namaycush L.: Edlund 36b, 39, 140, 165 (CAN), Edlund & Argus 12843 (CAN). Pt.Oterkvik : Gillespie et al. 7631 , 7655 . Read I.: Oldenburg 43-1014, 43-949 (CAN).Festucarubra L. subsp. rubra, Fig. Descurainiasophioides, Poapratensissubsp.pratensis and Loliumperenne; the three grasses were almost certainly seeded. Persistence of the species at the site beyond 2017 requires confirmation. Elsewhere in the Canadian Arctic known from a few other sites, including Iqaluit and Clyde R. on Baffin I., Eglinton I. (needs confirmation) and scattered mainland sites .Leymusmollis subsp. villosissimus (Scribn.) Á.Löve & D.Löve (Elymusarenariussubsp.villosissimus (Scribn.) Á.Löve), Figs Inl., the north side of Prince Albert S., Read I.  and Ulukhaktok , the head of Minto ukhaktok . Thannhemainland .Pt.NORTHWEST TERRITORIES. Berkeley : Stretton 87 (DAO). Inl.Boot : Gillespie et al. 9643 . C. Wollaston: Edlund 15 (CAN). Freshwater Bay: Stretton 76 (DAO). Kuujjua R.: Dutilly 18832 , Gillespie et al. 9937 , 9912 . Inl. (head)Minto : Edlund 173 (CAN), Gillespie et al. 10232 , 10267 , Porsild 17358 (CAN). Prince Albert S. (N): Stretton 44 (DAO). Ulukhaktok: Edlund 303, 784 (CAN), Pokiak 35 (CAN), Saarela & Bull 1466 . Walker B.: Oldenburg 45-1453 (CAN). NUNAVUT. Anderson B.: Edlund & Argus 12701 (CAN). Cambridge Bay: Bennett et al. 13-0564 , 13-0231 , Gillespie et al. 8461 , Stephens 1255 (CAN). Ferguson L. [Tahiryuaq]: Hainault 1986 (DAO). Johansen B.: Gillespie et al. 8013 , 8098 . Pt.Murray : Gillespie et al. 8189 . Pt.Oterkvik : Gillespie et al. 7611 . Read I.: Oldenburg 43-1033, 43-884, 43-894, 43-921, 43-952 (CAN).Loliumperenne L., Figs Descurainiasophioides, Festucarubrasubsp.rubra and Poapratensissubsp.pratensis; the three grasses were almost certainly seeded. Persistence of the species at the site beyond 2017 requires confirmation. Elsewhere in the Canadian Arctic Archipelago known only from Iqaluit, where it was seeded Phippsiaalgida (Sol.) R.Br., Fig. Inl., Namaycush L., the head of Prince Albert S., Storkerson P. and Ulukhaktok. Previously recorded from the head of Minto NORTHWEST TERRITORIES. Kuujjua R.: Gillespie et al. 9895 , 10001 (CAN). Inl. (head)Minto : Gillespie et al. 10285 (CAN), Porsild 17359 (CAN). Prince Albert S.: Porsild 17433 (CAN). Ulukhaktok: Edlund 801 (CAN). NUNAVUT. Cambridge Bay: Bennett 13-0337 (CAN). Johansen B.: Gillespie et al. 8126 . Namaycush L.: Edlund & Roncato-Spencer 108 (CAN). Read I.: Oldenburg 43-890 (CAN). Storkerson P.: Edlund 242 (CAN).Pleuropogonsabinei R.Br., Figs Inl. and a site (“Jackpot L.”) 60 miles east thereof, Richard Collinson Inl. and Storkerson P. . Inl.Boot : Gillespie et al. 9674 . Inl. (head)Minto : Edlund 115 (CAN), Gillespie et al. 10231 , Porsild 17360, 17501 (CAN). Inl.Richard Collinson : Edlund 693 (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 13-0179 , Porsild 21589 (CAN), Stephens 1062 (CAN), 1103 (KSTC), 1169 (CAN). Ferguson L. [Tahiryuaq]: Edlund & Argus 12772 (CAN), Hainault 1994 (DAO). Natkusiak P.: Gould s.n. (ALA). Storkerson P.: Edlund 190, 242, 290 (CAN).Poa : Hainault 2003 , Jones & Hainault 2054 (DAO). Greiner L.: Ponomarenko VI-116, VI-243, VI-273, VI-279A, VI-320 (CAN). Hadley B.: Edlund 139 (CAN). Johansen B.: Gillespie et al. 7972 , 7842 , 7954-1 , 7954-2 (CAN), 7578 . Pt.Oterkvik : Gillespie et al. 7596 , 7802 (CAN). Read I.: Oldenburg 43-1015, 43-1016, 43-1156, 43-896, 43-942 (CAN). Cr.Sinclair : Gillespie et al. 8248 . Storkerson P.: Edlund 229 (CAN).Poaarctica subsp. caespitans Simmons ex Nannf., Fig. Previously recorded from Cambridge Bay and Ulukhaktok . ThannheNORTHWEST TERRITORIES. Kuujjua R.: Gillespie et al. 9906 (CAN). Ulukhaktok: Edlund 812 (CAN), Saarela & Bull 1430 . NUNAVUT. Cambridge Bay: Calder et al. 24153, 24202 (DAO), Gillespie 5843 (CAN), Gillespie et al. 8497 , Gillespie & Consaul 6316 , Stephens 1094 , 1152 , Washburn 31 (CAN). Ferguson L. [Tahiryuaq]: Hainault 2073 (DAO). Johansen B.: Gillespie et al. 7922 . South-central Victoria I.: Edlund & Argus 12874 (CAN).Poaglauca Vahl subsp. glauca, Figs Inl., Mt. Bumpus, Namaycush L., the north side of Prince Albert S., Ulukhaktok and Wollaston P. , Gillespie et al. 9560 . Burns L. (S): Edlund 567 (CAN). Kuujjua R.: Dutilly 18809 , 18811 , 18812 (QFA), Gillespie et al. 9724 , 9751 (CAN), Gillespie et al. 9964 . Inl. (head)Minto : Edlund 100, 116, 627 (CAN), Gillespie et al. 10011 , 9500, 10023 (CAN), Porsild 17362 . Prince Albert S. (N): Edlund 442, 443 (CAN), Edlund & Argus 12808 (CAN). Ulukhaktok: Edlund 882, 902, 906 (CAN), Gray & Gibbard 51 (DAO), Saarela & Bull 1459 , 1428 . Walker B.: Oldenburg 45-1456 (CAN). Wollaston P.: Oldenburg 54-203, 54-503 (MIN). NUNAVUT. Anderson B.: Edlund & Argus 12706 . Cambridge Bay: Bennett 14-0305 , 13-0237 (BABY), Dutilly 28091 , 28093 , Edlund & Argus 12617 , 12635 , Gillespie 5821, 5822, 5823, 5831, 5834, 5841 (CAN), Oldenburg 44-887 (CAN), Polunin s.n. (CAN), Porsild 21591, 21592 (CAN), Smith & Sweatman 35, 37 . Clouston B.: Gillespie et al. 7735a . Mts.Colville : Gillespie et al. 7781-1 , 7781-2 . Ferguson L. [Tahiryuaq]: Hainault 2041, 2081, 2128 , 2018 (UAC). Greiner L.: Ponomarenko VI-159 (CAN). Hadley B.: Edlund 25 (CAN). Johansen B.: Gillespie et al. 8149 (ALTA), 7841 , 7915 , 8082 , 8149-2 , 7990 , 7841-2 , 8105-1 , 8105-2 (CAN), 8149-1 . Mt. Bumpus: Edlund 166, 239, 270 (CAN). Mount Pelly: Ponomarenko VI-337A (CAN). Namaycush L.: Edlund 28 (CAN), Edlund & Roncato-Spencer 67, 68, 72, 73 (CAN). Pt.Oterkvik : Gillespie et al. 7595 , 7662 , 7632 , 7532-1 (CAN), 7532-2 (CAN). Cr.Sinclair : Gillespie et al. 8351 . Wollaston P.: Johansen & D. Jenness 402 (CAN).Poahartzii Gand. subsp. hartzii, Figs Inl., Mt. Bumpus, Murray Pt., Oterkvik Pt., Read I. and “Trunsky L.” Pseudoviviparous plants are here included in subsp. hartzii instead of treated as subsp. vrangelica , as recently recognized , Banks, Cornwallis, Devon and Melville islands, and scattered sites along the mainland Northwest Territories coast and northern Quebec NORTHWEST TERRITORIES. Minto : Gillespie et al. 10078 , 10245 (CAN), 10299 . Ulukhaktok: Edlund 904 (CAN), Saarela & Bull 1416 . NUNAVUT. Cambridge Bay: Edlund & Argus 12696 (CAN), Gillespie 5824, 5832, 5832, 5833, 5849 (CAN), Gillespie & Consaul 6323, 6333, 6338, 6351, 6319 (CAN), Gillespie et al. 8392 , 8495 , Polunin s.n. , Stephens 1084 . Greiner L.: Ponomarenko VI-245, VI-197 (CAN). Hadley B.: Edlund 338, 328 [pseudoviviparous form] (CAN). Johansen B.: Gillespie et al. 8148-6 (MT), 7841-1 , 8148-1 , 8148-2 . Mt. Bumpus: Edlund 169 (CAN). Pt.Murray : Gillespie et al. 8197 . Namaycush L.: Edlund & Argus 12844 (CAN). Pt.Oterkvik : Gillespie et al. 7616a (CAN). Read I.: Oldenburg 43-1013, 43-897, 43-949b (CAN). “Trunsky L.”: Bennett et al. 14-0681 (US). Wollaston P.: D. Jenness 402, 407 [pseudoviviparous form] (CAN).Poapratensis subsp. alpigena (Lindm.) Hiitonen , Fig. Inl., southeast of the head of Prince Albert S. and Ulukhaktok : Edlund 566, 62a (CAN). Kuujjua R.: Dutilly 18806 (QFA), Gillespie et al. 9858 , 9915 , 9965 . Inl. (head)Minto : Edlund 98 (CAN), Gillespie et al. 10152 , 10147 , 10121 , 10093b . Prince Albert P.: Oldenburg 54-243A (MIN). Ulukhaktok: Edlund 88, 789, 810, 872 (CAN), Oldenburg 45-1596 (CAN), Saarela & Bull 1460 . NUNAVUT. Cambridge Bay: Bennett 13-0219 (US), 13-0164 , Calder et al. 24194 (DAO), Dutilly 37129 (QFA), Edlund & Argus 12640, 12690, 12695 (CAN), Oldenburg 44-935 (CAN), Polunin s.n. , Smith & Sweatman 35 , 38 (DAO), Stephens 1101 (CAN). Clouston B.: Gillespie et al. 7725 . Ferguson L. [Tahiryuaq]: Hainault 2003 , 2052 (DAO). Greiner L.: Ponomarenko VI-045, VI-071, VI-161, VI-331 (CAN). Hadley B.: Edlund 52, 111, 153 (CAN). Johansen B.: Gillespie et al. 7883, 8067, 8150 , 7955-2 , 8090 . TPOvayok : Gould s.n. (ALA). Natkusiak P.: Edlund 98 (CAN). Pt.Oterkvik : Gillespie et al. 7789 , 7564 , 7575 , 7583 , 7673 (CAN), 7798 . Prince Albert S. (head): Edlund 104 (CAN). Read I.: Oldenburg 42-485, 43-988 (CAN). Cr.Sinclair : Gillespie et al. 8346 .Poapratensis subsp. colpodea (Th.Fr.) Tzvelev  Schol.), Fig. Inl. and later mapped these unvouchered records ( records . Aiken e records .NUNAVUT. Greiner L.: Ponomarenko VI-297 (CAN). Namaycush L.: Edlund 29 (CAN). Storkerson P.: Edlund 207, 245 (CAN). Washburn L.: Edlund & Argus 12794 (CAN).Poapratensis L. subsp. pratensis, Fig. Descurainiasophioides, Festucarubrasubsp.rubra and Loliumperenne; the three grasses were almost certainly seeded. Persistence of the species at the site beyond 2017 requires confirmation.Newly recorded from Cambridge Bay, the first record for Victoria I. and the Canadian Arctic Archipelago. This non-native taxon was found growing in highly disturbed ground in the hamlet in 2017 with NUNAVUT. Cambridge Bay: Saarela & Teeter 5299 (CAN).Puccinellia : Hainault 2127 (UAC). Hadley B.: Edlund 119 (CAN). Johansen B.: Gillespie et al. 8023, 8138a (CAN). Pt.Murray : Gillespie et al. 8220 (CAN). Pt.Oterkvik : Gillespie et al. 7635 (CAN). Read I.: Oldenburg 43-1028 (CAN). Storkerson P.: Edlund 296 (CAN).Puccinelliatenella subsp. langeana (Berlin) Tzvelev, Fig. Inl. and Johansen B., areas where we also made collections. Newly recorded from Boot Inl., Kuujjua R., Cambridge Bay, Clouston B., Murray Pt. and Oterkvik Pt. These records close a conspicuous gap between the few known sites on Banks I. and the adjacent mainland . A littoral species occurring above the high tide line. In Northwest Territories the species is given a status rank of Undetermined . Kuujjua R.: Gillespie et al. 9975 . Inl. (head)Minto : Gillespie et al. 10198, 10236, (CAN), 10233 . Ulukhaktok: Edlund 894, 903 (CAN). NUNAVUT. Cambridge Bay: Gillespie et al. 8468, 8486 (CAN). Clouston B.: Gillespie et al. 7728a, 7728b (CAN). Johansen B.: Gillespie et al. 8022a (CAN). Pt.Murray : Gillespie et al. 8222b, c (CAN). Pt.Oterkvik : Gillespie et al. 7707 .Puccinelliavaginata (Lange) Fernald & Welsh, Fig. Inl., Murray Pt. and Storkerson P. Elsewhere in the Canadian Arctic recorded from Baffin, Bylot, Devon, Ellesmere and Southampton islands and scattered mainland sites . Inl. (head)Minto : Gillespie et al. 10244, 10273 . Prince Albert S. (head): Porsild 17434 (CAN). NUNAVUT. Cambridge Bay: Bennett 13-0284a , Edlund & Argus 12653 (CAN). Pt.Murray : Gillespie et al. 8221 (CAN). Storkerson P.: Edlund 226 (CAN).Puccinelliavahliana (Liebm.) Scribn. & Merr (Colpodiumvahlianum (Liebm.) Nevski), Fig. Inl. and east of Namaycush L. Inl. Newly recorded from Natkusiak P., “Oldenburg L.” and Storkerson P. Widespread throughout the Canadian Arctic Archipelago and known from scattered sites on the mainland . “Oldenburg L.”: Oldenburg 45-1367 (CAN). Ulukhaktok: Porsild 17244 (CAN). NUNAVUT. Cambridge Bay: Edlund & Argus 12881 (CAN), Gillespie et al. 8444 , 8467 (CAN), Polunin s.n. (CAN), Stephens 1073 (CAN). Hadley B.: Edlund 317, 375 (CAN). Storkerson P.: Edlund 206, 278 (CAN).Trisetumspicatum (L.) K.Richt., Figs Inl., Mt. Bumpus, Namaycush L., southeast of the head of Prince Albert S., Read I., Ulukhaktok and Wollaston P.  Barberá, Quintanar, Soreng & P.M.Peterson, in light of polyphyly of Trisetum Pers. , Gillespie et al. 9539 . Burns L. (S): Edlund 563 (CAN). Kuujjua R.: Dutilly 18814 (DAO), Gillespie et al. 9948 , 9862 (CAN). Inl. (head)Minto : Edlund 97, 613 (CAN), Gillespie et al. 10092 , 10010 , 10146 , Porsild 17363 (CAN). Prince Albert S. (N): Oldenburg 46-2275 (CAN). Ulukhaktok: Edlund 833 (CAN), Porsild 17246 (CAN), Saarela & Bull 1458 . Cr.NUNAVUT. “30-Mile ”: Bennett et al. 14-0357 (BABY). Cambridge Bay: Bennett et al. 13-0279 , Edlund & Argus 12693 (CAN), Gillespie et al. 8390 , Polunin s.n. (CAN), Stephens 1256 . Clouston B.: Gillespie et al. 7734 . Mts.Colville : Gillespie et al. 7779 (CAN). Greiner L.: Ponomarenko VI-209, VI-276 (CAN). Hadley B.: Edlund 50 (CAN). Johansen B.: Gillespie et al. 7836 , 8091 (CAN), 8140 , 8151 . Mt. Bumpus: Edlund 231, 232, 256 (CAN). Namaycush L.: Edlund 40 (CAN). Pt.Oterkvik : Gillespie et al. 7808 . Prince Albert S. (head): Edlund 102 (CAN). Read I.: Oldenburg 43-1020 , 43-895 (CAN). Cr.Sinclair : Gillespie et al. 8350 . Wollaston P.: D. Jenness 350a .RanunculalesRanunculaceae [6/13]Ranunculaceae:Key to Anemoneparviflora Michx., Figs Inl., south of Burns L., Cambridge Bay (known only from Augustus Hills and the hills above Long Point), the head of Minto Inl., Mt. Pelly, south side of Prince Albert S., Wollaston P. and Ulukhaktok , Gillespie et al. 9597 , 9620 . Burns L. (S): Edlund 555 (CAN). Kuujjua R.: Gillespie et al. 9830 , 9891 . Inl. (head)Minto : Edlund 74 (CAN), Gillespie et al. 10136 , Porsild 17389 (CAN). Prince Albert S. (S): Edlund 532, 536 (CAN). Ulukhaktok: Edlund 834 (CAN), Porsild 17287 . NUNAVUT. Cambridge Bay: Bennett et al. 13-0305 , Edlund & Argus 12856 . Mts.Colville : Gillespie et al. 7765 . Johansen B.: Gillespie et al. 8100 , 8166 . Kugaluk R.: Edlund & Nixon 206 (CAN). TPOvayok : Stephens 1161 . Pt.Oterkvik : Gillespie et al. 7661 , 7807 . Cr.Sinclair : Gillespie et al. 8297 (CAN). Wollaston P.: D. Jenness 653 (CAN).Anemonastrumrichardsonii (Hook.) Mosyakin (Anemonerichardsonii Hook.)–Richardson’s anemone | Asian (NE)–amphi-Beringian–North American (N)Anemoneparviflora. We accept the record on Porsild’s authority. This record was not mapped in A.parviflora .Calthapalustris subsp. radicans (T.F.Forst.) Hook., Figs Inl. (Porsild obs.), Storkerson P. and Ulukhaktok (Porsild obs.)  . Thannhedson Bay .Cr.NUNAVUT. “30-Mile ”: Bennett et al. 14-0364 . Cambridge Bay: Bennett et al. 13-0161 , Calder et al. 24175 (DAO), Hainault 3214 (DAO), Oldenburg 44-922 (CAN), Porsild 21616 (CAN), Stephens 961 , Sweatman & Smith 14 . Ferguson L. [Tahiryuaq]: Edlund & Argus 12771 (CAN). Greiner L.: Ponomarenko VI-141A, VI-203 (CAN). Hadley B.: Edlund 323 (CAN). Storkerson P.: Edlund 374 (CAN).Halerpestescymbalaria (Pursh) Greene  Britton, Ranunculuscymbalaria Pursh), Fig. Pt. At Johansen B., this species grew along the coast on a narrow stony shoreline in the beach to tundra transition zone, with Symphyotrichumpygmaeum and the typical seashore species Potentillaanserina and Tripleurospermummaritimum. At Oterkvik Pt. it grew in cracks in rock near the coast within the salt spray zone. The Victoria I. populations mark the northern limit of its distribution in Canada. Elsewhere in the Canadian Arctic recorded from scattered mainland sites , Porsild 17288 (CAN). Johansen B.: Gillespie et al. 8005 . Pt.Oterkvik : Gillespie et al. 7682 , 7705 (CAN).Pulsatillanuttalliana (DC.) Berchtold ex J.Presl (Anemonepatenssubsp.multifida Hultén), Fig. Known on Victoria I. only from “Long L.” . ElsewheNUNAVUT. “Long L.”: Lambert s.n. (CAN)  L.D.Benson, R.pedatifidusvar.leiocarpus (Trautv.) Fernald), Figs Inl., Mt. Bumpus, Mt. Pelly, the head and southeast of the head of Prince Albert S., Richard Collinson Inl., Ulukhaktok and Wollaston P. : Edlund 53, 559 (CAN). C. Wollaston: Edlund 55 (CAN). Kuujjua R.: Gillespie et al. 9876 , 9926 (CAN). Inl. (head)Minto : Edlund 50 (CAN), Gillespie et al. 10112 , 10139 (CAN). Prince Albert S. (head): Edlund 156 (CAN), Porsild 17441 (CAN). Inl.Richard Collinson : Edlund 605, 701, 706 (CAN). Ulukhaktok: Edlund 508, 816 (CAN), Oldenburg 45-1661 , Saarela & Bull 1453 . Walker B.: Oldenburg 45-1533A . Cr.NUNAVUT. “30-Mile ”: Bennett et al. 14-0347 (UBC). Cambridge Bay: Bennett 13-0223 , Edlund & Argus 12857 (CAN), Gillespie et al. 8457 , Ponomarenko VI-307 (CAN), Stephens 1098 , 1262 , 976 . C. Colborne: Edlund & Argus 12734 (CAN). Ferguson L. [Tahiryuaq]: Hainault 1901 (DAO). Greiner L.: Ponomarenko VI-120, VI-146 (CAN). Hadley B.: Edlund 80 (CAN). Johansen B.: Gillespie et al. 7816 . Mt. Bumpus: Edlund 255 (CAN). TPOvayok : Gillespie et al. 8429 , Stephens 1163 . Pt.Oterkvik : Gillespie et al. 7535 . Prince Albert S. (head): Edlund 84 (CAN). Wollaston P.: D. Jenness 654 (CAN).Ranunculuscodyanus B.Boivin, Fig. Ranunculussect.Batrachium from a global perspective. Plants now recognized as this taxon were previously treated under R.aquatilisvar.diffusus With., R.aquatilisvar.eradicatus Laest. and R.subrigidus W.G.Drew.Previously recorded from Cambridge Bay  and newlNORTHWEST TERRITORIES. Ulukhaktok: Edlund 510, 817 (CAN), 820 , Oldenburg 45-1660 (CAN). NUNAVUT. Cambridge Bay: Edlund & Argus 12879 (CAN), Stephens 1055 , 1097 (CAN). Namaycush L.: Edlund 169 (CAN).Ranunculusgmelinii DC. subsp. gmelinii, Figs Previously recorded from Cambridge Bay, Ferguson L., Namaycush L., the head of Prince Albert S. and Ulukhaktok . ThannheNORTHWEST TERRITORIES. Kuujjua R.: Gillespie et al. 9875 (CAN). Prince Albert S. (head): Porsild 17440 (CAN). Ulukhaktok: Edlund 760, 830 (CAN). NUNAVUT. Cambridge Bay: Oldenburg 44-948B (CAN), Porsild 21617 (CAN), Stephens 1099 . Ferguson L. [Tahiryuaq]: Edlund & Argus 12776 (CAN). Greiner L.: Ponomarenko VI-203L (CAN). Johansen B.: Gillespie et al. 8072 . TPOvayok : Bennett et al. 13-0296 , Stephens 1065 . Namaycush L.: Edlund & Roncato-Spencer 116 (CAN).Ranunculushyperboreus Rottb. subsp. hyperboreus, Figs Inl., Mt. Lady Pelly and Ulukhaktok NORTHWEST TERRITORIES. Minto : Porsild 17390 (CAN). Mt. Lady Pelly [Amaaqtuq]: Jones & Hainault s.n. (DAO). Ulukhaktok: Edlund 509, 511, 818, 821 (CAN), Saarela & Bull 1449 . NUNAVUT. Cambridge Bay: Bennett et al. 13-0265 , Edlund & Argus 12691 (CAN), Gillespie et al. 8494 , 8501 , Oldenburg 44-948A (CAN), Saarela & Teeter 5286 (CAN), Stephens 1149 . Hadley B.: Edlund 322 (CAN).Ranunculusnivalis L., Figs Inl., Storkerson P. and Ulukhaktok (Inl. and Kuujjua R. A collection mapped in Edlund 558) from Burns L. has been redetermined as R.sabinei. Elsewhere in the Canadian Arctic recorded from Axel Heiberg, Baffin, Banks, Bathurst, Bylot, Cameron, Devon, Digges, Eglinton, Ellef Ringnes, Ellesmere, Lougheed, Massey, Melville, Nottingham, Prince Patrick, Somerset, Southampton, Upper Savage and West Foxe islands and across the mainland . Kuujjua R.: Gillespie et al. 9757, 9999 (CAN), 9816 . Inl. (head)Minto : Porsild 17391 (CAN). Ulukhaktok: Edlund 724, 837 (CAN), Porsild 17289 (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 13-0306 , Edlund & Argus 12872 (CAN). Ferguson L. [Tahiryuaq]: Hainault 2002 (DAO). Storkerson P.: Edlund 284 (CAN).Ranunculuspygmaeus Wahlenb., Fig. Inl. , Cambridge Bay, Ulukhaktok and an unnamed lake ca. 60 mi. N of Cambridge Bay . Ulukhaktok: Edlund 805, 836 (CAN). Cr.NUNAVUT. “30-Mile ”: Bennett et al. 14-0334 (BABY). Cambridge Bay: Bennett et al. 13-0307 , Polunin s.n. (CAN), Stephens 1181 . Ferguson L. [Tahiryuaq]: Hainault 1995 (DAO). Johansen B.: Gillespie et al. 8096, 8133 (CAN). Unnamed lake ca. 60 mi. N of Cambridge Bay: Porsild 17474 (CAN).Ranunculussabinei R.Br., Fig. Pt. (Previously recorded only from Peel Pt. . ThannhePt. .NORTHWEST TERRITORIES. Burns L. (S): Edlund 558 (CAN). Natkusiak P.: Edlund 102 (CAN). Pt.Peel : Edlund 427 (CAN). Storkerson P.: Edlund 191 (CAN).Ranunculussulphureus Sol., Fig. Known only from Storkerson P. . ElsewheNUNAVUT. Storkerson P.: Edlund 168, 247 (CAN).Papaver L. [4]Papaver proposed by Papaver, variously treated as P.radicatum Rottb. .Taxonomy is based on a revision of Arctic island material of m Rottb. , P.cornllisense  and Papaver spp.  have beePapavercornwallisense D.Löve, Fig. P. Jenness 22) mapped from Richard Collinson Inl. in P.dahlianum, a taxon Porsild did not recognize. Recorded from Boot Inl., Falaise B., Greiner L., Greely Haven, Hadley B., Kuujjua R., the head of Minto Inl., Murray Pt., Namaycush L., Natkusiak P., “Oldenburg L.”, Sinclair Cr., Storkerson P. and Walker B.A collection , 9692 (CAN). Kuujjua R.: Gillespie et al. 9840, 9950 (CAN). Inl. (head)Minto : Gillespie et al. 10090 , 10254 (CAN). Natkusiak P.: Edlund 115 (cf.) (CAN). “Oldenburg L.”: Oldenburg 45-1395 (CAN). Walker B.: Oldenburg 45-1506 (CAN). NUNAVUT. Falaise B.: Eriksen et al. 972 . Greiner L.: Ponomarenko VI-043 (CAN). Greely Haven: Fortier 94 (CAN). Hadley B.: Edlund 148 (CAN). Pt.Murray : Gillespie et al. 8188 . Namaycush L.: Edlund & Roncato-Spencer 49 (CAN). Cr.Sinclair : Gillespie et al. 8290 . Storkerson P.: Edlund 165 (CAN).Papaverdahlianum Nordh.  Elven), Fig. Inl., Cambridge Bay, Greiner L., Kuujjua R., Oterkvik Pt., Richard Collinson Inl., Storkerson Pen. and Ulukhaktok.Recorded from Boot Inl.NORTHWEST TERRITORIES. Boot : Gillespie et al. 9694 (CAN), 9708b . Kuujjua R.: Gillespie et al. 9846, 9962 . Inl.Richard Collinson : P. Jenness 22 (CAN). Ulukhaktok: Saarela & Bull 1465 (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 13-0233 (chars), Oldenburg 44-929 (CAN), Polunin s.n. (CAN). Greiner L.: Ponomarenko VI-037 (CAN). Pt.Oterkvik : Gillespie et al. 7713 . Storkerson P.: P. Jenness 36 (CAN).Papaverhultenii Knaben, Figs P.radicatum in Inl., C. Wollaston, Hadley B., Johansen B., Kuujjua R., Murray Pt., Namaycush L., Oterkvik Pt. and Sinclair Cr. Although petals are typically yellow in the species, we encountered plants with orange petals at Sinclair Cr.Inl.NORTHWEST TERRITORIES. Boot : Gillespie et al. 9524a, 9693 (CAN). C. Wollaston: Edlund 48 (CAN). Kuujjua R.: Gillespie et al. 9828 , 9850, 9854b , 9854a, 9957 , 9931 (CAN). Inl. (head)Minto : Edlund 120 (CAN), Gillespie et al. 10008, 10257 , 10111 , Porsild 17392 (CAN). Prince Albert S. (N): Oldenburg 46-2279 (CAN). Prince Albert S. (head): Porsild 17443 (CAN). Ulukhaktok: Bandringa 304 (CAN), Edlund 302, 752 (CAN), Oldenburg 42-30, 45-1546 (CAN), Ross 16 (ALTA), 16A (GH), Saarela & Bull 1456 . NUNAVUT. Cambridge Bay: Bennett et al. 13-0272 (CHAR), Edlund & Argus 12661 (CAN), Gillespie et al. 8394, 8481a, 8481b , 8454 (CAN), 8496 , Porsild 21618 (CAN), Smith & Sweatman 40 (CAN), Stephens 932 , Sweatman & Smith 25 (CAN), Washburn 39 (cf.) (CAN). Hadley B.: Edlund 55, 56 (CAN). Johansen B.: Gillespie et al. 7899, 8051 (CAN), 7969 . Pt.Murray : Gillespie et al. 8211 . Namaycush L.: Edlund & Roncato-Spencer 120 (CAN). Pt.Oterkvik : Gillespie et al. 7624, 7641 , 7652 (CAN), 7697 . Read I.: Oldenburg 43-904 (GH), 43-978 , Porsild 17200 (CAN), Ross 28A (GH), 28B . Cr.Sinclair : Gillespie et al. 8232, 8239, 8270, 8354 , 8296 , 8353 , 8357 .Papaverlapponicum (Tolm.) Nordh., Fig. Inl., Cambridge Bay, Kuujjua R., and the head of Prince Albert S. Subspecies , 9573 . Kuujjua R.: Edlund 626 (CAN). NUNAVUT. Cambridge Bay: Gillespie et al. 8482 , Stephens 1203 . Prince Albert S. (head): Edlund & Argus 12806 (CAN).Saxifragaceae [3/15]Saxifragaceae : Bennett et al. 14-0422 . Greiner L.: Ponomarenko VI-030a (CAN).Micranthesnivalis (L.) Small , Figs Inl., Hadley B., Natkusiak P., Storkerson P. and Richard Collinson Inl. . Inl. (head)Minto : Edlund 594 (CAN), Gillespie et al. 10054 (CAN). Natkusiak P.: Edlund 104 (CAN). Prince Albert P.: Oldenburg 54-688 . Prince Albert S. (N): Oldenburg 46-2281 (CAN). Inl.Richard Collinson : Edlund 544 (CAN). Ulukhaktok: Edlund 719 (CAN), Porsild 17309 (CAN). Cr.NUNAVUT. “30-Mile ”: Bennett et al. 14-0346 (BABY). Cambridge Bay: Bennett et al. 13-0308 , Oldenburg 44-933 , Polunin s.n. (CAN), Stephens 1276, 975 (CAN). C. Colborne: Edlund & Argus 12730 (CAN). Collinson P.: Edlund & Argus 12762 (CAN). Ferguson L. [Tahiryuaq]: Bennett et al. 14-0424 . Greiner L.: Ponomarenko VI-272 (CAN). Hadley B.: Edlund 93, s.n. (CAN). Johansen B.: Gillespie et al. 7828, 7975 (CAN), 8142 . Natkusiak P.: Edlund 84 (CAN). Prince Albert S. (head): Edlund 76 (CAN). Cr.Sinclair : Gillespie et al. 8277 (CAN). Storkerson P.: Edlund 198 (CAN). Washburn L.: Oldenburg 46-2178 (CAN).Micranthestenuis (Wahlenb.) Small, Fig. Inl. Elsewhere in the Canadian Arctic recorded from Axel Heiberg, Baffin, Bathurst, Cornwallis, Devon, Ellef Ringnes, Ellesmere, Lougheed, Melville, Prince Patrick, Southampton and Somerset islands and northern Quebec and Labrador . Inl. (head)Minto : Gillespie et al. 10163, 10286 (CAN). Ulukhaktok: Edlund 719, 875 (CAN).Saxifraga : Jones 17 (DAO). Greiner L.: Ponomarenko VI-048, VI-139, VI-140A, VI-155, VI-203H, VI-212 (CAN). Hadley B.: Edlund 136, 20, 94 (CAN). Johansen B.: Gillespie et al. 8032 (CAN). Mt. Bumpus: Edlund 238 (CAN). Mt. Lady Pelly [Amaaqtuq]: Jones 13a (DAO). Pt.Murray : Gillespie et al. 8177 . Natkusiak P.: Edlund 105 (CAN). Pt.Oterkvik : Gillespie et al. 7539 . Cr.Sinclair : Gillespie et al. 8284 . Read I.: Ross 16A (GH). Storkerson P.: Edlund 197 (CAN). Washburn L.: Oldenburg 46-2175 (CAN).Saxifragacespitosa L., Fig. Cr.”, Boot Inl., south of Burns L., Greiner L., Kuujjua R., Murray Pt., “Oldenburg L.”, Oterkvik Pt., Prince Albert P., Read I. and Sinclair Cr. Widespread across the Canadian Arctic islands, and across the mainland . Burns L. (S): Edlund 45 (CAN). C. Wollaston: Edlund 12, 120 (CAN). Kuujjua R.: Gillespie et al. 9866 (CAN), Stretton 51 (DAO). “Oldenburg L.”: Oldenburg 45-1346A . Inl. (head)Minto : Edlund 111 (CAN), Gillespie et al. 9841 (CAN), 10053 , 10160 (CAN), 10220 . Prince Albert P.: Oldenburg 54-690 (GH). Prince Albert S. (head): Porsild 17444 (CAN). Ulukhaktok: Edlund 876 (CAN), Oldenburg 45-1653 . Porsild 17308 (CAN). Cr.NUNAVUT. “30-Mile ”: Bennett et al. 14-0338 (BABY). Cambridge Bay: Bennett et al. 13-0217 , Edlund & Argus 12645, 12665 (CAN), Gillespie et al. 8450 , Oldenburg 44-934 , Polunin s.n. , Porsild 21633 (CAN), Stephens 1009, 1260, 1275 (CAN). Greiner L.: Ponomarenko VI-030 (CAN). Hadley B.: Edlund 135, 63 (CAN). Pt.Murray : Gillespie et al. 8176 . Natkusiak P.: Edlund 81 (CAN). Pt.Oterkvik : Gillespie et al. 7626 , 7711 . Prince Albert S. (head): Edlund 75 (CAN). Read I.: Oldenburg 43-1074 , 43-911 (CAN), Porsild 17201 (CAN), Ross 17A (GH). Cr.Sinclair : Gillespie et al. 8252 . Storkerson P.: Edlund 160 (CAN).Saxifragaflagellaris subsp. platysepala (Trautv.) A.E.Porsild, Fig. Previously recorded from “Jackpot L.”, Natkusiak P. and Storkerson P . Newly rNORTHWEST TERRITORIES. Jackpot L.: Porsild 17504 (CAN). Natkusiak P.: Edlund 107 (CAN). “Oldenburg L.”: Oldenburg 45-1347A (CAN). Storkerson P.: Edlund 220 (CAN), P. Jenness 34 (CAN).Saxifragahirculus L., Figs Inl. (Porsild obs.), the head of Prince Albert S., Richard Collinson Inl., Read I. (Porsild obs.), Storkerson P., Tahoe L. (Porsild obs.) and Ulukhaktok. Inl., Greiner L., Kuujjua R., “Oldenburg L.”, Oterkvik Pt., Sinclair Cr., the south coast of Victoria I. north of Read I., Wollaston P.and two inland sites on Prince Albert P. Elsewhere in the Canadian Arctic recorded from Axel Heiberg, Baffin, Banks, Bathurst, Bylot, Coats, Cornwallis, Devon, Digges, Ellesmere, Igloolik, Jenny Lind, King William, Melville, Prince Charles, Prince of Wales, Prince Patrick, Somerset and Southampton islands, and across the mainland . Kuujjua R.: Gillespie et al. 9817 . Inl. (head)Minto : Edlund 57, 591 (CAN), Gillespie et al. 10104 , 10180 . “Oldenburg L.”: Oldenburg 45-1349 . Prince Albert P.: Oldenburg Oldenburg 54-256 (GH), 54-689 . Prince Albert S. (head): Porsild 17445 (CAN). Inl.Richard Collinson : Edlund 698 (CAN), P. Jenness 21 (CAN). Ulukhaktok: Edlund 300 (CAN), Oldenburg 42-75b, 42-99a (CAN), 42-98, 45-1655 , Ross 20 (ALTA), 20A (GH). Walker B.: Oldenburg 45-1527A . Wollaston P.: Oldenburg 54-513 (GH). NUNAVUT. Albert Edward B.: Ponomarenko VI-261 (CAN). Cambridge Bay: Bennett et al. 13-0203 , Consaul & Gillespie 1122 (CAN), Edlund & Argus 12623 (CAN), Fortier 12 (CAN), Gillespie et al. 8386 , Oldenburg 44-890 (CAN), Polunin s.n. (CAN), Porsild 21634 (CAN), Stephens 948, 1194 (CAN). Greiner L.: Ponomarenko VI-124, VI-132, VI-140C, VI-184a, VI-203G (CAN). Hadley B.: Edlund 46, 125 (CAN). Johansen B.: Gillespie et al. 7994 (CAN). TPOvayok : Gould s.n. (ALA). Namaycush L.: Edlund 125 (CAN). Pt.Oterkvik : Gillespie et al. 7637, 7678 . Cr.Sinclair : Gillespie et al. 8234 . S coast of Victoria I. N of Read I.: Ross 27 (ALTA), 27A (GH). Storkerson P.: Edlund 163, 239, 304 (CAN).Saxifragahyperborea R.Br., Fig. Inl., Murray Pt., Prince Albert P. and Washburn L. Elsewhere in the Canadian Arctic recorded from Baffin, Banks, Prince of Wales, Somerset and most of the Queen Elizabeth islands and scattered mainland sites . Kuujjua R.: Gillespie et al. 10000, 9894, 9954 (CAN). Inl. (head)Minto : Gillespie et al. 10308 (CAN), Porsild 17403 (CAN). Prince Albert P.: Oldenburg 54-254 (GH). Ulukhaktok: Edlund 796 (CAN). NUNAVUT. Cambridge Bay: Edlund & Argus 12882 (CAN), Porsild 21635 (CAN), Stephens 1182 (CAN). Pt.Murray : Gillespie et al. 8175 (CAN). Storkerson P.: Edlund 161, 237 (CAN). Washburn L.: Oldenburg 46-2176 Saxifragaoppositifolia L., Figs Inl. , the head of Prince Albert S., Read I., Ulukhaktok and Wollaston P. , Gillespie et al. 9682 . C. Wollaston: Edlund 13 (CAN). Kuujjua R.: Gillespie et al. 9763 , 9813 . Inl. (head)Minto : Edlund 58 (CAN), Gillespie et al. 10173 (CAN), 9482 . Natkusiak P.: Edlund 99, 100, 101 (CAN). “Oldenburg L.”: Oldenburg 45-1348 (CAN). Prince Albert P.: Oldenburg 54-255, 54-692 (GH). Prince Albert S. (head): Stretton 1 (DAO), Weerstra 31 (DAO). Prince Albert S. (N): Oldenburg 46-2282 (CAN). Inl.Richard Collinson : Edlund 156, 188 (CAN). Ulukhaktok: Bandringa 315 (CAN), Edlund 293 (CAN), Gray & Gibbard 1, 8 (DAO), Oldenburg 45-1649 , Ross 10A (GH), Saarela & Bull 1491 (CAN). Walker B.: Oldenburg 45-1526A (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 13-0198 , 13-0566 (UBC), Calder et al. 24205 (DAO), Edlund & Argus 12878 (CAN), Fortier 16 (CAN), Gillespie et al. 8490 , Gould s.n. (ALA), Oldenburg 44-926 (CAN), Smith 1 (CAN), Stephens 833, 1192 (CAN), Washburn 40 (GH), 42 (CAN). E. Victoria I.: Lee & Kittle s.n. (CAN). Greely Haven: Fortier 96 (CAN). Greiner L.: Ponomarenko VI-221a, VI-224C (CAN). Hadley B.: Edlund 10, 85 (CAN). Johansen B.: Gillespie et al. 8025 . Pt.Murray : Gillespie et al. 8213 . Namaycush L.: Edlund 3, s.n. (CAN). Natkusiak P.: Edlund 83 (CAN). Pt.Oterkvik : Gillespie et al. 7494 . Read I.: Oldenburg 42-518B, 43-1037, 43-1065 (CAN), Porsild 17202 (CAN), Ross 22A (GH). Storkerson P.: Edlund 162 (CAN). “Trunsky L.”: Bennett et al. 14-0387 (BABY). Wollaston P.: D. Jenness 390 (CAN). Washburn L.: Oldenburg 46-2174 (CAN).Saxifragarivularis subsp. arctolitoralis (Jurtzev & V.V.Petrovsky) M.H.Jørg. & Elven, Fig. Pt. New records from Cambridge Bay and Ulukhaktok are reported here. This subspecies differs from the eastern Arctic subsp. rivularis by having longer glandular hairs on the hypanthium (3–6 mm versus 1–2 mm in the latter). The collection from Cambridge Bay appears somewhat intermediate between the two subspecies with hypanthium hairs mostly sparse and 1–2 mm long, but with some longer to 4 mm. Subspecies arctolitoralis approaches S.hyperborea and, apart from the presence of stolons in the former , the two may be difficult to distinguish. Additional field collections with attention to presence of stolons are needed, as well as further study to better distinguish/resolve taxa in this species complex in the western Arctic islands. Subspecies were not recognized in previous Canadian Arctic floras relevant to the study area.First reported for Victoria I. by NORTHWEST TERRITORIES. Ulukhaktok: Oldenburg 45-1650 (CAN), Porsild 17310 (CAN). NUNAVUT. Cambridge Bay: Oldenburg 44-939 (CAN). Pt.Murray : Gillespie et al. 8174 .Saxifragatricuspidata Rottb., Figs Inl., Mt. Bumpus, Namaycush L., Natkusiak P., Richard Collinson Inl. and Ulukhaktok . C. Wollaston: Edlund 11 (CAN). Kuujjua R.: Dutilly 18773 (DAO), Gillespie et al. 9735 . Inl. (head)Minto : Edlund 45, 592, 593 (CANJ), Gillespie et al. 10044 . Natkusiak P.: Edlund 80 (CAN). Prince Albert P.: Oldenburg 54-691 (UBC). Inl.Richard Collinson : P. Jenness 15 (CAN). Ulukhaktok: Edlund 345 (CAN), Ross 17 (ALTA), 17A (GH), Oldenburg 42-11 , 45-1651 (CAN), 54-216 (GH), Saarela & Bull 1436 . Walker B.: Oldenburg 45-1529A . NUNAVUT. Cambridge Bay: Bennett et al. 13-0162 , Calder et al. 24162 (DAO), Edlund & Argus 12664 (CAN), Fortier 19 (CAN), Gillespie et al. 8395 , Oldenburg 44-946 (CAN), Polunin s.n. (CAN), Ponomarenko VI-078A (CAN), Stephens 954, 1193 (CAN), Washburn 32 (GH). Ferguson L. [Tahiryuaq]: Jones 15 (DAO). Greiner L.: Ponomarenko VI-157, VI-274A (CAN). Hadley B.: Edlund 10, 92 (CAN). Johansen B.: Gillespie et al. 7868 . Mt. Bumpus: Edlund 230 (CAN). Namaycush L.: Edlund & Roncato-Spencer 114 (CAN), Edlund 166 (CAN). Pt.Oterkvik : Gillespie et al. 7529 . Read I.: Oldenburg 42-502, 43-1080, 43-907, 43-950 (CAN). Cr.Sinclair : Gillespie et al. 8330 . Washburn L.: Oldenburg 46-2177 (CAN).Myriophyllum [1]Myriophyllumsibiricum Kom. , Figs Previously recorded from Cambridge Bay  and newlNORTHWEST TERRITORIES. Cambridge Bay: Bennett et al. 13-0291 , Gillespie et al. 8442 (CAN), Stephens 1280 . Johansen B.: Gillespie et al. 7912 .RosidsFabalesFabaceae [4/10]Fabaceae RosaceaeKey to Dryasintegrifolia Vahl subsp. integrifolia, Figs Inl., Mt. Bumpus, Natkusiak P., Namaycush L., the north side of Prince Albert S., Richard Collinson Inl., Wollaston P. and Ulukhaktok . C. Wollaston: Edlund 30, 125 (CAN). Kuujjua R.: Gillespie et al. 9767 . Inl. (head)Minto : Edlund 53 (CAN), Gillespie et al. 9462 (CAN). Natkusiak P.: Edlund 113, 213 (CAN). “Oldenburg L.”: Oldenburg 45-1393 . Prince Albert P.: Oldenburg 54-252 (GH). Prince Albert S. (N): Oldenburg 46-2288 (CAN), Stretton 38 (DAO). Inl.Richard Collinson : Edlund 93, 155 (CAN), Stretton 206 (DAO). Ulukhaktok: Bliss s.n. (ALTA), Edlund 350, 351, 848, 849 (CAN), Gray & Gibbard 10, 14, 41 (DAO), Oldenburg 42-70A, 45-1646, 44-947, 45-1530A (CAN), 42-23 , 54-214 , Porsild 17311 (CAN), Ross 15 (ALTA), 15A (GH), Saarela & Bull 1433 , Stretton 75 (DAO). Walker B.: Oldenburg 45-1530A (CAN). NUNAVUT. Byron B.: Dushenko (UVIC). Cambridge Bay: Bennett et al. 13-0618 (CAN), 13-0563 (BABY), 13-0246 , Edlund & Argus 12663 (CAN), Fortier 15 (CAN), Gibson 7076 , Gillespie et al. 8389 , Gould s.n. (ALA), Oldenburg 44-947 (CAN), Polunin s.n. , Stephens 941, 1092 , Tasker s.n. (CAN), Washburn 33 (GH), 36 (CAN). Mts.Colville : Gillespie et al. 7772 . Eastern Victoria I.: Lee & Kittle s.n. (CAN). Falaise B.: Eriksen et al. 965 (ALA). Greiner L.: Ponomarenko VI-027, VI-131, VI-220, VI-234 (CAN). Hadley B.: Edlund 60, 90 (CAN). Johansen B.: Gillespie et al. 7867 . “Long L.”: Lambert s.n. . Mt. Bumpus: Edlund 235 (CAN). Namaycush L.: Edlund & Roncato-Spencer 12, 30 (CAN). Pt.Oterkvik : Gillespie et al. 7464 , 7486 . Read I.: Oldenburg 43-1058, 43-1059 (CAN), Ross 2A (GH) . Cr.Sinclair : Gillespie et al. 8315 . Storkerson P.: Edlund 218 (CAN), P. Jenness 37 (CAN). Washburn L.: Oldenburg 46-2160 , 42-2161 (CAN). Wollaston P.: Johansen & D. Jenness 573 (CAN), Oldenburg 54-510 .Potentilla : Bennett et al. 14-0433b . Greiner L.: Ponomarenko VI-278 (CAN). TPOvayok : Bennett & Sullivan 13-0287 .Potentillahyparctica Malte subsp. hyparctica, Fig. Newly recorded for Victoria I., from a single collection from the north side of Prince Albert S. collected by M. Oldenburg in 1946. Elsewhere in the Canadian Arctic recorded from Banks, Baffin, Somerset and Southampton islands, nearly all of the Queen Elizabeth islands, northeastern mainland Nunavut, the Coppermine R. area, Nunavut, and northern Quebec .NORTHWEST TERRITORIES. Prince Albert S. (N): Oldenburg 46-2290 .Potentillanivea L., Figs Dryasintegrifolia/Salixarctica tundra on limestone till of ancient beach ridges with Taraxacumphymatocarpum, Oxytropisarctica, Androsaceseptentrionalis, Papaverhultenii, Stellarialongipes, Cerastiumbeeringianum and Saxifragatricuspidata. Elsewhere in the Canadian Arctic recorded from NE Banks I., central to southern Baffin I. and across the mainland . Ulukhaktok: Edlund 334, 335 (CAN), Oldenburg 42-38 (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 13-0300 . C. Colborne: Edlund & Argus 12738 (CAN). Johansen B.: Gillespie et al. 7973a , 7974a .Potentillapedersenii (Rydb.) Rydb. (P.rubricaulis Lehm. pro parte), Fig. P.rubricaulis Lehm., which is now understood to have a much narrower circumscription and range . Inl. (head)Minto : Gillespie et al. 10060, 10201b (CAN), 10062a, 10125 . Ulukhaktok: Edlund 734 (CAN), Saarela & Bull 1424 , 1432 . Walker B.: Oldenburg 45-1532A . NUNAVUT. Cambridge Bay: Bennett et al. 13-0273 . Falaise B.: Eriksen et al. 980, 995 (ALA). Greiner L.: Ponomarenko VI-115 (CAN). Mt. Bumpus: Edlund 275 (CAN). TPOvayok : Gould s.n. (ALA), Stephens 1177 , 1178 . Prince Albert S. (head): Edlund 83 (CAN). Prince Albert S. (N): Oldenburg 46-2290 (CAN). Read I.: Oldenburg 43-1082 .Potentilla ×prostrata Rottb., Fig. Pt. This taxon is considered to be a hybrid between P.arenosa and P.nivea. See Blouin 1, CAN 10069756) and northern Quebec and Labrador Potentillapulchella R.Br., Fig. Inl., Namaycush L., the north side and a site east of the head of Prince Albert S., Richard Collinson Inl., Storkerson P. and Ulukhaktok . Inl. (head)Minto : Gillespie et al. 10196, 10250 , Porsild 17406 (CAN). “Oldenburg L.”: Oldenburg 45-1394 (CAN). Prince Albert S. (N): Stretton 36 (DAO). Inl.Richard Collinson : Edlund 183, 699 (CAN). Ulukhaktok: Edlund 806 (CAN), Porsild 17314 (CAN), Saarela & Bull 1435 , 1452 . Wollaston P.: Oldenburg 54-509 (GH). NUNAVUT. Cambridge Bay: Bennett et al. 13-0280 , Bennett et al. 13-0568 (BABY), Gillespie et al. 8385 , 8483 , Oldenburg 44-942 (CAN), Polunin s.n. , Porsild 21636 (CAN), Stephens 1068 . Falaise B.: Eriksen et al. 940 (ALA). Greiner L.: Ponomarenko VI-041, VI-195, VI-206, VI-326 (CAN). Hadley B.: Edlund 33, 59, 324 (CAN). Johansen B.: Gillespie et al. 8130 . Pt.Murray : Gillespie et al. 8216 . Namaycush L.: Edlund & Argus 12802 (CAN). Pt.Oterkvik : Gillespie et al. 7551 , 7620 , 7653 , 7695 . Prince Albert S. (head): Edlund & Argus 12823 (CAN). Read I.: Oldenburg 42-480, 43-1081, 43-945 (CAN). Storkerson P.: Edlund 209, 233, 234 (CAN).Potentillasubgorodkovii Jurtzev (P.uniflora Ledeb. pro parte), Fig. Inl., Namaycush L., “Trunsky L.”, Ulukhaktok and Washburn L. This is one of two taxa treated here (the other is P.vulcanicola), following P.uniflora andmapped from Namaycush L., Ulukhaktok and northwestern Wollaston P. The P.uniflora records from Ulukhaktok and Namaycush L. have been redetermined as this species, and the one from Wollaston Land ” by Elven in 2009) is not included here because it is in poor condition and a reliable identification is not possible. Revision of material at CAN records the taxon elsewhere in the Canadian Arctic on northern Axel Heiberg, northern Baffin, Banks, Devon, Ellesmere, King William and Melville islands and mainland sites.Recorded from Kuujjua R., the head of Minto NORTHWEST TERRITORIES. Kuujjua R.: Gillespie et al. 9715b . Inl. (head)Minto : Gillespie et al. 10187, 10261b (CAN), 9471b . Ulukhaktok: Edlund 736 (CAN), Oldenburg 42-24, 42-38 (CAN). NUNAVUT. Namaycush L.: Edlund & Roncato-Spencer 113 (CAN). “Trunsky L.”: Bennett et al. 14-0401 . Washburn L.: Oldenburg 46-2159 (cf.) .Potentillasubvahliana Jurtzev (P.vahliana Lehm. pro parte), Fig. P.vahliana (which has a more easterly distribution and is not known from Victoria I.) is this species; we have not seen the voucher for the other one, mapped from east-central Victoria I. P.vahliana from the head of Minto Inl. (conf.), Richardson I. and Cambridge Bay; vouchers require review. Newly recorded from Boot Inl., Read I. and Ulukhaktok. Based on revised material at CAN, following current taxonomy, elsewhere in the Canadian Arctic recorded from Axel Heiberg, northern Baffin, Banks, Melville and Southampton islands and scattered mainland sites.The Sangraun Hills site mapped in Inl.NORTHWEST TERRITORIES. Boot : Gillespie et al. 9688 . Inl. (head)Minto : Gillespie et al. 10217, 10261a (CAN), 10259 . Sangraun Hills: Edlund 545 (CAN). Ulukhaktok: Edlund 881 (CAN), Gray & Gibbard 2 (DAO), Oldenburg 42-18 (CAN). NUNAVUT. Read I.: Oldenburg 43-918 (CAN).Potentillatikhomirovii Jurtzev, Fig. P.arenosasubsp.arenosa (P.sect.Nivea) and P.hyparctica (P.sect.Aurea), and may have multiple origins . NUNAVUT. Cambridge Bay: Bennett et al. 13-0276 , Smith & Sweatman 39 (DAO). C. Colborne: Edlund & Argus 12737 (CAN). Johansen B.: Gillespie et al. 7973a2 (BABY).Potentillauschakovii Jurtzev (P.rubricaulis Lehm. pro parte), Figs P.rubricaulis Lehm., which is now understood to have a much narrower circumscription and range  and some mainland sites in Northwest Territories and Nunavut. The general status rank of this species in Northwest Territories is Undetermined , 9535a, 9631 (CAN). Kuujjua R.: Gillespie et al. 9715 , 9831 , 9836, 9849 , 9987 . Inl. (head)Minto : Edlund 89, 175 (CAN), Gillespie et al. 10020a, 10061, 10062b, 10067 , 10072 , 9472, 10082, 10117, 10135 (CAN), 10089 , 10126, 10140, 10155 , Porsild 17407, 17408 (CAN). Natkusiak P.: Edlund 124 (CAN). Inl.Richard Collinson : Edlund 153, 154 (CAN). Tahiryuaq: Edlund 154 (CAN). Ulukhaktok: Bandringa 316 , Edlund 335b, 506, 734b, 735 (CAN), Porsild 17315 , Saarela & Bull 1424 (CAN). Walker B.: Porsild 17497 (CAN). Wollaston P. (NW): Porsild 17227 (CAN). NUNAVUT. Greiner L.: Ponomarenko VI-111 (CAN). Johansen B.: Gillespie et al. 7973b, 7974b , 8123 . Mt. Bumpus: Edlund 242 (CAN). TPOvayok : Gould s.n. (ALA). Pt.Oterkvik : Gillespie et al. 7687, 7693 . Read I.: Porsild 17203 (CAN). Wollaston P.: D. Jenness 574 (CAN).Potentillavulcanicola Juz. (P.uniflora Ledeb. pro parte), Fig. P.uniflora, which was mapped only from Ulukhaktok, Namaycush L. and Wollaston P. (see comments under P.subgorodkovii). Revision of material at CAN by J.M. Saarela records the taxon from Axel Heiberg, Banks and Melville islands and the Fosheim P., Ellesmere I., as well some western mainland sites. There are also records from the Milne Inl. area of northern Baffin I. . In the Canadian Arctic Archipelago, We are aware of only a single record on Victoria I., from Ulukhaktok, which we were not able to confirm. NORTHWEST TERRITORIES. Ulukhaktok: Gray & Gibbard 47 .Rubuschamaemorus L., Fig. Known from a single collection gathered at “Long L.” . ElsewheNUNAVUT. “Long L.”: Lambert s.n. (CAN) , 9680 . C. Baring: Edlund 407 (CAN). Kuujjua R.: Gillespie et al. 9818 . Inl. (head)Minto : Gillespie et al. 10106 . Prince Albert S. (N): Edlund 520 (CAN). Walker B.: Oldenburg 45-1527B (CAN), Porsild 17498 (CAN).Betulaceae [1/1]Betula L. [1]Betulaglandulosa Michx., Figs Inl., “Long L.”, Murray Pt. and Ulukhaktok (Previously recorded from Boot ukhaktok . Thannheukhaktok .Inl.NORTHWEST TERRITORIES. Boot : Edlund 577 (CAN), Gillespie et al. 9623 . Kuujjua R.: Gillespie et al. 9744 , 9807 , 9819 . Ulukhaktok: Bliss s.n. (ALTA), Edlund 433, 434, 435, 436, 437, 793 (CAN), Porsild 17274 . NUNAVUT. Johansen B.: Gillespie et al. 7855 , 7919 . “Long L.”: Lambert s.n. . Pt.Murray : Edlund 529 (CAN). Pt.Oterkvik : Gillespie et al. 7599 , 7805 .Celastraceae [1/1]Parnassia L. [1]Parnassiakotzebuei Cham. ex Spreng., Figs Inl., Clouston B., Johansen B. and Read I. Elsewhere in the Canadian Arctic recorded from Banks I., southern Baffin I. and mainland sites NORTHWEST TERRITORIES. Minto : Gillespie et al. 10221b . Prince Albert S. (head): Edlund & Argus 12820 (CAN). NUNAVUT. Clouston B.: Gillespie et al. 7722 . Johansen B.: Gillespie et al. 8127 . Read I.: Oldenburg 43-980 (CAN).Salicaceae [1/10/11]Salix L. [10/11]Salix  told him of a valley in which a grove of willows was growing. Not far from Minto Inl., on Victoria Island, he found them in a sheltered valley about a quarter mile long. He said they had grown to a height of 7 or 8 feet. …”. The tallest individuals we observed in 2010, at a site in a river valley ca. 5 km inland from Boot Inl. on the northeast side of a small lake, reached ca. 3 m in height. At this site the willows formed dense thickets along the cobblestone floodplain of a small river, often growing with Dryasintegrifolia. Edlund’s collections gathered in 1982 along the same river valley record the plants as reaching 3–4 m high. A map in Inl.; Edlund did not voucher the additional populations observed and it is unclear from available information how common are the tree-sized stands. Photographs of a large stand of this willow along Boot Inlet, downstream from the stand we explored, are included in The willow thickets at Boot S.alaxensis, have not been documented by botanists.At Johansen B., the species grew along Mackenzie Creek. Further inland, about 1 km from its mouth, it grew along the edges of the rocky, sheltered canyon of the creek, with most plants 1–1.5 m in height. Closer to the mouth of the creek it formed dense thickets along the partly flooded riparian zone along the creek; at this site most plants were about 1 m tall, with several in the grove reaching 1.5 m in height. Tree-sized willows also occur in the interior portion of Victoria Island. At a site 29 km east of Namaycush L., labels of Edlund’s collections  record the species growing up to 3 m. Inl.NORTHWEST TERRITORIES. Boot : Edlund 570, 571, 572A (CAN), Gillespie et al. 9577 , 9578 . C. Wollaston: Edlund 26 (CAN). Kuujjua R.: Edlund 531, 666 (CAN), Gillespie et al. 9958 . Inl. (head)Minto : Edlund 52, 131, 144, 153, 590 (CAN), Gillespie et al. 10141 , 10183 , Porsild 17379, 17819 (CAN). NUNAVUT. Falaise B.: Eriksen et al. 990 (ALA). Johansen B.: Gillespie et al. 8134 , 8145 . Namaycush L.: Argus & Edlund 12834, 12836, 12837, 12838, 12839 (CAN).Salixarctica Pall., Figs Inl., Mt. Bumpus, Mt. Pelly, Namaycush L., Natkusiak P., N of a large lake in the Ekalluk River system about 90 km NNE of Cambridge Bay, Peel Pt., north shore and head of Prince Albert S., Read I., Richard Collinson Inl., Storkerson P., Tahiryuaq, Ulukhaktok, Washburn L. and Wollaston P. , 9581 , 9612 . C. Wollaston: Edlund 4, 27 (CAN). Kuujjua R.: Edlund 620, 668, 669 (CAN), Gillespie et al. 9871, 9889, 9959, 9960 (CAN), 9872 . Inl. (head)Minto : Edlund 77, 87, 139, 141, 142, 268 (CAN), Gillespie et al. 10203 , 10204 , 9498 (CAN), 9499a , Porsild 17380 (CAN). Natkusiak P.: Edlund 74 (CAN). Oldenburg L.: Oldenburg 45-1379 (MIN). Pt.Peel : Edlund 423 (CAN). Prince Albert P.: Oldenburg 54-683, 54-685 (MIN). Prince Albert S. (head): Edlund 381 (CAN), Shindman s.n. (DAO). Prince Albert S. (N): Edlund 2 (CAN). Inl.Richard Collinson : Edlund 198, 672, 695 (CAN). Inl.Richard Collinson : P. Jenness 18 (CAN). Tahiryuaq: Edlund 398, 399 (CAN). Ulukhaktok: Bandringa 307, 343 , Bliss s.n. , Edlund 329, 330, 331, 471, 495, 739 (CAN), Larsen s.n. (CAN), Pokiak 31 (CAN), Oldenburg 42-72 (MIN), Porsild 17272 (CAN), 17273 , Saarela & Bull 1411, 1412 , 1439 (CAN), Salokangas 22 . NUNAVUT. Albert Edward B.: Argus & Edlund 12784 (CAN), Ponomarenko VI-263 (CAN). Anderson B.: Argus & Edlund 12702, 12724 (CAN). Byron B.: Dushenko 1 (UVIC). Pt.Cache : Larsen s.n. (CAN). Cambridge Bay: Argus & Edlund 12611, 12612, 12621, 12677, 12894 (CAN), Bennett et al. 13-0270 , Consaul & Gillespie 1137 (CAN), Argus & Edlund 12866 (CAN), Fortier 23 (CAN), Gillespie et al. 8358 , 8505 , Polunin s.n. , Porsild 17467, 21610 (CAN), Saarela & Teeter 5290, 5300 (CAN), Stephens 1060, 1089 , 855, 872, 874, 1133 , 1271 , 828 (CAN), 850 , 873 (KSTC), Washburn 15, 18 (CAN). Clouston B.: Gillespie et al. 7758 (CAN). Collinson P.: Argus & Edlund 12747, 12752 (CAN). Eastern Victoria I.: Lee & Kittle s.n. (CAN). Falaise B.: Eriksen et al. 953 (ALA). Ferguson L. [Tahiryuaq]: Argus & Edlund 12790 (CAN), Hainault 1936 , 2021 , 2024, 2025 (CAN). Greiner L.: Ponomarenko VI-127, VI-138, VI-203B, VI-218B, VI-237A (CAN). Greely Haven: Fortier 98 (CAN). Hadley B.: Edlund 16, 105 (CAN). Johansen B.: Gillespie et al. 7910, 7927, 7928, 7982 . Mt. Bumpus: Edlund 203, 243, 244 (CAN). TPOvayok : Stephens 860, 861, 989 , 863, 867, 990 , 866 (KSTC). Namaycush L.: Argus & Edlund 12841, 12842 (CAN). Pt.Oterkvik : Gillespie et al. 7484 , 7512, 7521, 7522, 7651, 7806 (CAN), 7565 , 7566 , 7644 . Prince Albert S. (head): Argus & Edlund 12827 (CAN). Read I.: Oldenburg 42-517 (MIN), Porsild 17192 (CAN), Ross 20A, 21A (CAN). Cr.Sinclair : Gillespie et al. 8266, 8271 , 8267 , 8268 (CAN), 8283 , 8349 . Ekalluk R.: Argus & Edlund 12742 (CAN). Storkerson P.: Edlund 217 (CAN), Schroder 1 (DAO). Tahoe L.: Porsild 17453 (CAN). Tuktu R.: Gould s.n. (ALA). Washburn L.: Argus & Edlund 12797 (CAN), Oldenburg 42-2168 (MIN). Wollaston P.: D. Jenness 404, 409, 408a (CAN), Oldenburg 54-511 (MIN). Wollaston P. (SW): Edlund 524 (CAN).Salixarctophila Cockerell ex A.Heller, Fig. Pt.; see Known from a single collection on Victoria I. from Oterkvik Pt.NUNAVUT. Oterkvik : Gillespie et al. 7511 .Salixglauca var. stipulata Flod. (S.glaucasubsp.stipulifera (Flod. ex Hayren) Hiit.), Figs Gillespie et al. 7856, 7857, 7858, 7859, 8038, 8039) to heights of 30 cm . At one site in the area, it grew on a northwest facing boulder slope, reaching one metre in height , forming a thicket with Salixrichardsonii. We also found the species on a pingo 23 km west of Johansen B. airstrip, where it reached 30 cm in height . In the Cambridge Bay area, known from two sites discovered in 1987: 1.5 km NNW of the Dew Line station, where plants are recorded as reaching 20–25 cm tall , and a site adjacent to the road on the NE side of the Dew Line Station, where a single plant reaching 25 cm tall was found (no. 12687).Previously recorded only from Cambridge Bay . Newly rNUNAVUT. Cambridge Bay: Argus & Edlund 12687, 12890, 12891, 12892, 12895, 12896 (CAN). Johansen B.: Gillespie et al. 7856 , 7857, 8038, 8156 (CAN), 7858, 7859, 7861, 7964, 7983, 8039, 8155 , 7860, 7965, 8154 , 7926 , 7984 .Salixniphoclada Rydb. (S.brachycarpasubsp.niphoclada (Rydb.) Argus), Fig. Inl., Kuujjua R., the head of Minto Inl., Mt. Bumpus, the north side and head of Prince Albert S., Richard Collinson Inl., Ulukhaktok and SW Wollaston P. . Kuujjua R.: Edlund 665, 667 (CAN), Gillespie et al. 9886 , 9887 . Inl. (head)Minto : Gillespie et al. 10014 , 10290 (CAN), 10291 , Porsild 17381 (CAN). Prince Albert S. (head): Edlund 373 (CAN). Prince Albert S. (N): Edlund 372, 446 (CAN). Inl.Richard Collinson : Edlund 686 (CAN). Ulukhaktok: Edlund 742, 846 (CAN), Porsild 17270 (CAN). NUNAVUT. Clouston B.: Gillespie et al. 7729 , 7730 . Falaise B.: Eriksen et al. 973 (ALA). Johansen B.: Gillespie et al. 7924, 8070 , 7925, 7930, 8158 , 7929 , 8071, 8157 (CAN), 8159 . Mt. Bumpus: Edlund 45, 240, 241 (CAN). Pt.Oterkvik : Gillespie et al. 7482 , 7528, 7541, 7658, 7794 (CAN), 7542, 7656 , 7795 . Prince Albert S. (head): Argus & Edlund 12809, 12810, 12811, 12826, 12828 (CAN). Washburn L.: Oldenburg 46-2170 (MIN). Wollaston P. (SW): Edlund 527, 528 (CAN).Salixovalifolia Trautv. var. ovalifolia, Fig. First record for Victoria I. and the Canadian Arctic Archipelago. Known from a single collection gathered at Ferguson L. (identification confirmed by G.W. Argus). Elsewhere in the Canadian Arctic recorded from northern Yukon  and a reNUNAVUT. Ferguson L. [Tahiryuaq]: Hainault 2022 (DAO)  and northern Quebec and Labrador  . Jackpot L.: Porsild 17502 (CAN). Kuujjua R.: Gillespie et al. 10005 , 9759, 9852, 9852, 9991, 10006 (CAN). Inl. (head)Minto : Gillespie et al. 10255, 10256 (CAN), Porsild 17382 (CAN). Oldenburg L.: Oldenburg 45-1389 (MIN). Prince Albert S. (N): Oldenburg 46-2277 (MIN). Tahiryuaq: Edlund 395 (CAN). NUNAVUT. Cambridge Bay: Bennett & Sullivan 13-0295 , Polunin s.n. (CAN). Greiner L.: Ponomarenko VI-081, VI-213a, VI-218, VI-282 (CAN). Tuktu R.: Gould s.n. (ALA). Unnamed lake ca. 60 mi. N of Cambridge Bay: Porsild 17473 (CAN).Salixreticulata L., Figs Inl., Mt. Bumpus, Mt. Pelly, Natkusiak P., the head of Prince Albert S., Storkerson P. and Ulukhaktok. Inl., Kuujjua R., Oterkvik Pt. and Washburn L. Elsewhere in the Canadian Arctic recorded from Air Force, Baffin, Banks, Bylot, Coats, Devon, Digges, Eglinton, Igloolik, King William, Nottingham, Prince Charles, Prince of Wales, Princess Royal, Resolution, Somerset and Southampton islands and across the mainland , 9583 . C. Wollaston: Edlund 52, 67 (CAN). Kuujjua R.: Gillespie et al. 9791 , 9792 . Inl. (head)Minto : Edlund 138 (CAN), Gillespie et al. 9499b . Prince Albert S. (head): Edlund 380 (CAN). Ulukhaktok: Bandringa 345 , Bliss s.n. (ALTA), Edlund 456, 502, 749 (CAN), Larsen s.n. (CAN), Oldenburg 45-1552 (MIN). NUNAVUT. Albert Edward B.: Ponomarenko VI-264 (CAN). Anderson B.: Argus & Edlund 12720 (CAN). Byron B.: Dushenko 3 (UVIC) . Cambridge Bay: Argus & Edlund 12620 (CAN), Bennett et al. 13-0245 , Consaul & Gillespie 1106 (CAN), Fortier 24 (CAN), Gillespie et al. 8504 , Gould s.n. (ALA), Polunin s.n. (CAN), Stephens 1087 (KANU). Ferguson L. [Tahiryuaq]: Hainault 1975 . Greiner L.: Ponomarenko VI-129, VI-203N, VI-237 (CAN). Hadley B.: Edlund 31, 49, 142 (CAN). Johansen B.: Gillespie et al. 7862 , 7863 . Mt. Bumpus: Edlund 200 (CAN). TPOvayok : Argus & Edlund 12788 (CAN), Stephens 1164 , 869 (CAN), 991 . Natkusiak P.: Edlund 312 (CAN). Pt.Oterkvik : Gillespie et al. 7475 , 7476, 7483 . Storkerson P.: Edlund 345 (CAN). Washburn L.: Oldenburg 46-2165 (MIN).Salixrichardsonii Hook. (S.lanatasubsp.richardsonii (Hook.) A.K.Skvortsov), Figs Inl., Cambridge Bay, Ferguson L., Jonnessee L., the head of Minto Inl., Mt. Bumpus, Mt. Lady Pelly, Mt. Pelly, N of a large lake in the Ekalluk River system about 90 km NNE of Cambridge Bay, the north side and east of the head of Prince Albert S., Richard Collinson Inl., Surrey L., Tahiryuaq, Ulukhaktok and Wollaston P. , Banks, Prince of Wales and Southampton islands and across the mainland to Hudson Bay , Gillespie et al. 9603 . Kuujjua R.: Dutilly 18864 (DAO), Gillespie et al. 9800 (CAN), 9873, 9888 , 9874 , 9961 (CAN). Inl. (head)Minto : Edlund 140, 276 (CAN), Gillespie et al. 10110 (CAN), 10184 . Prince Albert S. (head): Edlund 383 (CAN). Prince Albert S. (N): Edlund 1 (CAN). Inl.Richard Collinson : Edlund 128, 199, 670, 673 (CAN). Tahiryuaq: Edlund 396, 397 (CAN). Ulukhaktok: Bandringa 346 , Edlund 474, 737, 738, 763 (CAN), Saarela & Bull 1503 . Walker B.: Oldenburg 45-1490 (MIN). NUNAVUT. Anderson B.: Argus & Edlund 12725 (CAN). Cambridge Bay: Argus & Edlund 12608, 12609, 12610, 12613, 12678, 12679, 12680, 12681, 12682, 12683, 12893 (CAN), Bennett et al. 13-0192 , Calder et al. 24204 (DAO), Consaul & Gillespie 1102, 1103, 1104, 1105, 1138, 1139 (CAN), Gillespie et al. 8500 , Gould s.n. (ALA), Porsild 21611 (CAN), Polunin s.n. , Stephens 1086 (CAN), 1285 , 829, 871 , 849 . Falaise B.: Eriksen et al. 969 (ALA). Ferguson L. [Tahiryuaq]: Hainault 2020 (CAN). Greiner L.: Ponomarenko VI-237B (CAN). Ekalluk R.: Argus & Edlund 12739 (CAN). Hadley B.: Edlund 54 (CAN), Gould s.n. (ALA). Johansen B.: Gillespie et al. 7852 , 7853, 7854 , 7940 , 7963 , 8169 . Jonnessee L.: Argus & Edlund 12778 (CAN). Mt. Bumpus: Edlund 154, 212 (CAN). Mt. Lady Pelly [Amaaqtuq]: Jones & Hainault 1898 . TPOvayok : Stephens 862, 868 . Namaycush L.: Argus & Edlund 12833 (CAN). Pt.Oterkvik : Gillespie et al. 7481, 7501 , 7500 (CAN), 7513 , 7514 . Prince Albert S. (head): Argus & Edlund 12825 (CAN). Cr.Sinclair : Gillespie et al. 8295 (CAN), 8348 . Surrey L.: Argus & Edlund 12803 (CAN). Washburn L.: Oldenburg 46-2172 (MIN). Wollaston P. (SW): Edlund 525, 526 (CAN). Wollaston P.: D. Jenness 308E (279) (CAN).Salixarctica × S.polaris, Fig. 44BInl., Cambridge Bay, Collinson P., Ferguson L., Johansen B., Kuujjua R., Mt. Pelly, Namaycush L., Prince Albert Sound (head) and Ulukhaktok. Morphological characteristics of hybrid plants, which are not included in the key here, are described in Inl.NORTHWEST TERRITORIES. Boot : Gillespie et al. 9614, 8615 (CAN). Kuujjua R.: Gillespie et al. 9758 (CAN). Prince Albert S. (head): Edlund 379 (CAN). Ulukhaktok: Edlund 723 (CAN), Porsild 17271 (CAN). NUNAVUT. Anderson B.: Argus & Edlund 12722 (CAN). Cambridge Bay: Argus & Edlund 12676, 12865, 12883, 12885, 12886, 12887 (CAN), Consaul & Gillespie 1130 (CAN), Stephens 1088 (CAN). Collinson P.: Argus & Edlund 12751 (CAN). Ferguson L. [Tahiryuaq]: Argus & Edlund 12789 (CAN). Johansen B.: Gillespie et al. 8094, 8095b . TPOvayok : Stephens 1167 . Namaycush L.: Argus & Edlund 12830, 12831, 12832, 12835 (CAN).Linum L. [1]Linumlewisii Pursh subsp. lewisii, Figs Inl  and along the upper edge of a SE-facing cliff with Carexmyosuroides, Calamagrostispurpurascens, Oxytropisarctica, O.arctobia and Poaglaucasubsp.glauca (no. 9609). In the Kuujjua R. area it grew on a stony dry hilltop and S-facing slope with Artemisiahyperborea, C.purpurascens, O.arctica, O.arctobia, Poaglaucasubsp.glauca and Saxifragatricuspidata. The three populations found at the head of Minto Inl. grew in similar habitats. At all sites, the taxon was infrequent. Elsewhere in the Canadian Arctic recorded from scattered mainland sites , Gillespie et al. 9618 (CAN). Kuujjua R.: Edlund 630 (CAN), Gillespie et al. 9730 . Inl. (head)Minto : Gillespie et al. 10027 , 10098 , 10265 , Porsild 17417 (CAN). NUNAVUT. Wollaston P.: Miller 201 (CAN).Onagraceae [2/2]OnagraceaeKey to Chamaenerionlatifolium (L.) Sweet (Chamerionlatifolium (L.) Holub, Epilobiumlatifolium L.), Figs Inl. , Mt. Pelly, Richard Collinson Inl., Ulukhaktok and Wollaston P. . Byron B.: Dushenko (UVIC). Kuujjua R.: Dutilly 18830 (QFA), Gillespie et al. 9821 . Inl. (head)Minto : Edlund 46, 606 (CAN). Inl.Richard Collinson : Edlund 201 (CAN). Ulukhaktok: Dutilly 18654 (QFA), Edlund 306 (CAN), Oldenburg 42-49, 45-1548 (CAN), Porsild 17319 (CAN), Ross 18A (GH), Saarela & Bull 1454 . Walker B.: Oldenburg 45-1504 (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 13-0214 , 13-0310 , Edlund & Argus 12686 (CAN), Stephens 1272 . Hadley B.: Edlund 71 (CAN). Johansen B.: Gillespie et al. 7934 . TPOvayok : Gillespie et al. 8427 , Gould s.n. (ALA), Stephens 1173 . Pt.Oterkvik : Gillespie et al. 7598 , 7640 . Read I.: Oldenburg 43-1064, 43-908 (CAN), Ross 29A (GH). Cr.Sinclair : Gillespie et al. 8355 . Wollaston P.: D. Jenness 575 (CAN).Epilobiumarcticum Sam., Figs Inl., Richard Collinson Inl. and Ulukhaktok . Kuujjua R.: Edlund 680 (CAN), Gillespie et al. 10004 (CAN). Inl. (head)Minto : Edlund 105 (CAN), Gillespie et al. 10040 , 10200 , Porsild 17318, 17320, 17412 (CAN). Inl.Richard Collinson : Edlund 543 (CAN). Ulukhaktok: Edlund 478 (CAN). Walker B.: Oldenburg 45-1505 . NUNAVUT. Cambridge Bay: Stephens 1150 . Johansen B.: Gillespie et al. 8010 . Greiner L.: Ponomarenko VI-103, VI-314A (CAN). Cr.Sinclair : Gillespie et al. 8286 .Brassicaceae [10/31/33]Brassicaceae : Hainault 2090 (DAO).Previously recorded from Cambridge Bay, Kuujjua R., the head of Minto ukhaktok . Newly rnd sites . Three cInl.NORTHWEST TERRITORIES. Boot : Gillespie et al. 9586 . Kuujjua R.: Edlund 622, 657 (CAN). Kuujjua R.: Gillespie et al. 9761 , 9844 (CAN). Inl. (head)Minto : Edlund 67 (CAN), Gillespie et al. 10075 , 10178 , 10252 (CAN), 9475 . Ulukhaktok: Edlund 298, 495 (CAN), Oldenburg 45-1690 (GH), Porsild 17290 (CAN), Saarela & Bull 1480 (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 13-0165 , 13-0195 , 14-0341 , 14-0383 (DAO), Dutilly & Duman 37162 (CAN), Edlund & Argus 12655, 12700 (CAN). Gillespie et al. 8416 (CAN), 8492 , 8493 , Oldenburg 44-900 (GH), Porsild 21619, 216200 (CAN), Stephens 1038 , Stephens 1051, 1069, 1118, 1137 , Washburn 24 . Greiner L.: Ponomarenko VI-289 (CAN). Johansen B.: Gillespie et al. 7888 . Pt.Murray : Gillespie et al. 8182 (CAN). Pt.Oterkvik : Gillespie et al. 7472, 7560 , 7489 . Cr.Sinclair : Gillespie et al. 8263 (CAN), 8329 .Brayaglabella subsp. purpurascens (R.Br.) Cody (B.purpurascens R.Br.), Fig. Inl., Natkusiak, Storkerson P., Read I., Ulukhaktok, Walker B. and Wollaston P. , Prince Albert P. and Richard Collinson Inl. Widespread across the Canadian Arctic Archipelago : Edlund 57 (CAN). C. Wollaston: Edlund 53 (CAN). Kuujjua R.: Gillespie et al. 9837 . Inl. (head)Minto : Edlund 122 (CAN). Natkusiak P.: Edlund 90, 127 (CAN). Prince Albert P.: Oldenburg 54-237 (GH), Inl.Richard Collinson : Edlund 148 (CAN). Tahiryuaq: Edlund 385 (CAN). Walker B.: Porsild 17493A, 17493B (CAN). Wollaston P. (NW): Porsild 17218 (CAN). NUNAVUT. Cambridge Bay: Bennett 13-0612 (CAN), 13-0318 , Beschel 13481 (CAN), Gould s.n. (ALA), Polunin s.n. (CAN), Ponomarenko VI-056, VI-063, VI-094 (CAN), Stephens 1014 (KSTC), 950, 1034 . Greiner L.: Ponomarenko VI-167, VI-296B (CAN). Hadley B.: Edlund 13, 101, 337 (CAN). Mt. Bumpus: Edlund 204, 227 (CAN). Namaycush L.: Edlund 37, 40, 43, 148 (CAN), Edlund & Roncato-Spencer 45 (CAN). Read I.: Porsild 17195 (CAN). Storkerson P.: Edlund 181, 185, 215, 222, 300, 326 (CAN). Wollaston P.: D. Jenness 413 (CAN).Brayahumilis (C.A.Mey.) B.L.Rob. subsp. humilis (B.richardsonii (Rydb.) Fernald, B.humilissubsp.arctica (Böcher) Rollins), Figs Inl. area . Inl. (head)Minto : Edlund 122 (CAN), Gillespie et al. 10170 (CAN). Ulukhaktok: Edlund 862 (CAN), Porsild 17291, 17292 , Oldenburg 45-1688 (GH). NUNAVUT. Cambridge Bay: Bennett et al. 13-0264 , 14-0304 (UAAH), Gillespie et al. 8413 (CAN). Falaise B.: Eriksen et al. 985 (ALA). Johansen B.: Gillespie et al. 7887 . Mt. Bumpus: Edlund 220 (CAN). Pt.Oterkvik : Gillespie et al. 7561, 7562 (CAN), 7663 . Cr.Sinclair : Gillespie et al. 8224 , 8319 . Wollaston P.: D. Jenness 411 (CAN).Brayathorild-wulffii subsp. glabrata J.G.Harris, Fig. Braya, B.thorild-wulffii.Known from a single collection from Namaycush L., which marks the known eastern and southern limit of the subspecies. Elsewhere in the Canadian Arctic recorded from Banks I. . The taxNUNAVUT. Namaycush L.: Stretton 18 (DAO).Brayathorild-wulffii Ostenf. subsp. thorild-wulffii, Figs Pt. and the north side of Prince Albert S.  have been redetermined as Brayaglabellasubsp.purpurascens, and we have not seen a voucher for the record from the north shore of Prince Albert S. Elsewhere in the Canadian Arctic recorded from Banks I. and the Queen Elizabeth Islands NORTHWEST TERRITORIES. Minto : Gillespie et al. 10074 . Pt.Peel : Edlund 424 (CAN).Cardamine : Hainault (DAO). Greiner L.: Ponomarenko VI-050, VI-052b, VI-105b, VI-300, VI-329b, VI-341 (CAN). Hadley B.: Edlund 41, 156 (CAN). Johansen B.: Gillespie et al. 7817 . Mt. Bumpus: Edlund 246 (CAN). Namaycush L.: Edlund & Roncato-Spencer 71 (CAN). Pt.Oterkvik : Gillespie et al. 7498 . Cr.Sinclair : Gillespie et al. 8292 (CAN). Tuktu R.: Gould s.n. (ALA).Cardaminepolemonioides Rouy  O.E.Schultz), Figs Inl., the head of Prince Albert S., Storkerson P. and Ulukhaktok , Inl. (head)Minto : Edlund 107, 603, 604 (CAN), Gillespie et al. 10133 (CAN). Prince Albert S. (head): Porsild 17442 (CAN). Ulukhaktok: Edlund 483, 764 (CAN). NUNAVUT. Albert Edward B.: Ponomarenko VI-258A (CAN). Byron B.: Dushenko 25 (UVIC). Cambridge Bay: Bennett 13-0229 , Calder et al. 24181 (DAO), Consaul & Gillespie 1123 (CAN), Gillespie et al. 8366 , Oldenburg 44-950 (GH), Polunin s.n. (CAN), Porsild 17468, 21622 (CAN), Stephens 1052, 1093 (CAN), 1253 (KSTC). Greiner L.: Ponomarenko VI-105, VI-137A, VI-203F (CAN). Hadley B.: Edlund 320 (CAN). Johansen B.: Gillespie et al. 8045 . Storkerson P.: Edlund 244 (CAN). Tuktu R.: Gould s.n. (ALA).Cochleariagroenlandica L.  Hultén, C.officinalissubsp.groenlandica (L.) A.E.Porsild), Figs Pt., Hadley B., the head of Minto Inl., Namaycush L., Natkusiak P., the head of Prince Albert S. (Porsild obs.), Read I. , Richard Collinson Inl., Storkerson P., Ulukhaktok and an unnamed lake ca. 60 miles north of Cambridge Bay . Inl. (head)Minto : Edlund 155 (CAN). Natkusiak P.: Edlund 118 (CAN). “Oldenburg L.”: Oldenburg 45-1352 (GH). Inl.Richard Collinson : Edlund 694 (CAN). Ulukhaktok: Edlund 346, 795 (CAN), Saarela & Bull 1451 . NUNAVUT. Cambridge Bay: Bennett 14-0648 , Bennett et al. 13-0248 , 13-0627 (od), Calder et al. 24186 (DAO), Gillespie et al. 8463 , Oldenburg 44-902 (GH), Polunin s.n. (CAN), Stephens 1155 . Clouston B.: Gillespie et al. 7738 (CAN). Collinson P.: Edlund & Argus 12755 (CAN). Hadley B.: Edlund 79, 122, 318 (CAN). Johansen B.: Gillespie et al. 8009 . Namaycush L.: Edlund 121 (CAN). Read I.: Oldenburg 42-529 (GH). Cr.Sinclair : Gillespie et al. 8254, 8285 (CAN). Unnamed lake ca. 60 mi. N of Cambridge Bay: Porsild 17475 (CAN). Storkerson P.: Edlund 166, 210 (CAN), Stretton 234 (DAO).Crucihimalayabursifolia (DC.) D.A.German & A.L.Ebel  Rollins, Transberingiabursifolia (DC.) Al-Shehbaz & O’Kane), Figs Newly reported from Victoria I. based on a single collection from Cambridge Bay gathered in 2013 near the Defence Early Warning station. Taxonomy follows NUNAVUT. Cambridge Bay: Bennett et al. 13-0325 (CAN).Descurainiasophioides (Fisch. ex Hook.) O.E.Schulz, Figs Inl. and Ulukhaktok . Inl. (head)Minto : Edlund 106 (CAN). Ulukhaktok: Bliss s.n. (ALTA), Edlund 323 (CAN), Gray & Gibbard 5, 22, 26 (DAO), Oldenburg s.n. (CAN), Pokiak 30 , Saarela & Bull 1413 (CAN). Cr.NUNAVUT. “30-Mile ”: Bennett et al. 14-0345 (UBC). Byron B.: Dushenko 31 (UVIC). Cambridge Bay: Bennett et al. 13-0173 , Calder et al. 24165 (DAO), Edlund & Argus 12656 (CAN), Fortier 27 (CAN), Gould s.n. (ALA), Milne 42-804 (GH), Oldenburg 44-943 (GH), Parker & Jonsdottir 9090 (ALA), Polunin s.n. (CAN), Porsild 17469, 21623 (CAN), Stephens 1202 , 1286 , 848 (KSTC), 933 , Sweatman & Smith 29 , Saarela & Teeter 5287, 5292, 5293, 5298 (CAN). Ferguson L. [Tahiryuaq]: Jones & Hainault 38 (DAO). Cr.Sinclair : Gillespie et al. 8310 .Draba : Edlund & Argus 12777 (CAN). Falaise B.: Eriksen et al. 987 (ALA). Greiner L.: Ponomarenko VI-308A, VI-208A (cf.) (CAN). Namaycush L.: Edlund & Roncato-Spencer 52 (CAN).Drabacinerea Adams, Figs Inl., Cambridge Bay, Ferguson L., Hadley B., Kuujjua R., the head of Prince Albert S., Read I., Storkerson P., Ulukhaktok and northwestern Wollaston P. , Gillespie et al. 9532, 9569 , 9686 (CAN). Burns L. (S): Edlund 549 (CAN). Kuujjua R.: Edlund 664 (CAN), Gillespie et al. 9870c, 9898 , 9890, 9996, 9997, 9970 (CAN). Inl. (head)Minto : Gillespie et al. 10019 , 9469, 10081, 10171 (CAN), 10122b , Porsild 17395 , 17396 (CAN). Ulukhaktok: Edlund 361, 713, 779 (CAN), Gray & Gibbard 12 & 19, 44 (DAO) Porsild 17302 (CAN), Saarela & Bull 1415 , 1425, 1479 , 1487 (CAN). Wollaston P. (NW): Porsild 17221, 17223 (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 13-0212 , 13-0254 , 13-0567, 14-0662 (DAO), 13-0625, 14-0312 (MO), 13-0638, 14-0647a , 13-0639 , 14-0546 (UAAH), Calder et al. 24211A (DAO), Edlund & Argus 12648 (CAN), Gillespie et al. 8448, 8465 (CAN), Polunin s.n. (CAN), Ponomarenko VI-061, VI-065, VI-081b (CAN), Porsild 21624, 21627 (CAN), Smith & Sweatman 36 (DAO), Stephens 1011, 1115 (CAN), 877, 1013, 1070, 1116, 1117 , Tasker 2989 (CAN). Clouston B.: Gillespie et al. 7732 . Mts.Colville : Gillespie et al. 7771 (CAN). Diamond Jenness P.: Edlund & Argus 7503, 7504 (CAN). Ferguson L. [Tahiryuaq]: Bennett et al. 14-0667 (MO), Hainault 2119 (DAO). Greiner L.: Ponomarenko VI-200, VI-156, VI-327 (CAN). Hadley B.: Edlund 21, 107 (CAN). Johansen B.: Gillespie et al. 7827 , 7889 , 7890, 7894, 8078b, 8165 (CAN), 7893, 8054, 8129, 8163 , 8106 . Mt. Bumpus: Edlund 149, 205, 226 (CAN). TPOvayok : Gillespie et al. 8428 . Namaycush L.: Edlund 5, 6 (CAN), Roncato-Spencer 3 (CAN). Pt.Oterkvik : Gillespie et al. 7531, 7657 , 7536 , 7576b, 7585, 7588, 7593, 7659, 7660, 7664, 7801b (CAN), 7592 . Prince Albert S. (head): Edlund & Argus 12818 (CAN), Edlund 21, 89, 99 (CAN). Read I.: Porsild 17196 (CAN). Cr.Sinclair : Gillespie et al. 8225a, 8264 , 8281 , 8316 , 8328 (CAN). Storkerson P.: Edlund 208 (CAN). Wollaston P.: D. Jenness 652 (CAN).Drabacorymbosa R.Br. ex DC. (D.bellii Holm), Figs Inl., Mt. Bumpus, Namaycush L., Peel Pt., east of the head of Prince Albert S., Read I., Richard Collinson Inl., Ulukhaktok and Wollaston P. , 9702, 9703, 9704, 9705 (cf.), 9706, 9707 (CAN), 9687 . Burns L. (S): Edlund 551 (CAN). C. Wollaston: Edlund 37a (CAN). Kuujjua R.: Edlund 679 (CAN), Gillespie et al. 9834, 9870a, 9994 (CAN), 9843 , 9949 , Stretton 56 (DAO). Inl. (head)Minto : Gillespie et al. 9470, 10012, 10261C (CAN), 10058 , 10253 , Porsild 17394 (CAN). Natkusiak P.: Edlund 94 (CAN). Pt.Peel : Edlund 430 . Prince Albert S. (head): Stretton 32 (DAO). Inl.Richard Collinson : P. Jenness 19 (CAN), Stretton 217 (DAO). Ulukhaktok: Edlund 465 (CAN), Gray & Gibbard 18 (DAO), Ross 196 (ALTA). Wollaston P. (NW): Porsild 17219, 17220 (CAN). NUNAVUT. Anderson B.: Edlund & Argus 12703 (CAN). Cambridge Bay: Dutilly 28068 (DAO), Bennett et al. 13-0610 , 13-0650, 13-0651 (DAO), 13-0659 (CAN), Calder et al. 24211B (DAO), Consaul & Gillespie 1119 (CAN), Dutilly 28068, 28069 (DAO), Edlund & Argus 12647 (CAN), Gillespie et al. 8459 , Polunin s.n. (CAN), Ponomarenko VI-057B (CAN), Porsild 21624 , Saarela & Teeter 5291 (CAN), Scotter s.n. (ALTA), Stephens 852, 875, 978, 1016, 1071, 1269 , 853, 1267 (KSTC), Sweatman & Smith 8 (DAO), Tasker 2989 (CAN). Falaise B.: Eriksen et al. 944 (ALA). Ferguson L. [Tahiryuaq]: Bennett et al. 14-0405 (MO), Hainault 2072 (DAO), Jones 9 (DAO). Greely Haven: Fortier 95 (CAN). Greiner L.: Ponomarenko VI-031A, VI-093, VI-271, VI-283, VI-309A, VI-311 (CAN). Hadley B.: Edlund 12, 508, 96, 128, 150 (CAN). Johansen B.: Gillespie et al. 8078a . Mt. Bumpus: Edlund 147, 266 (CAN). Mt. Lady Pelly [Amaaqtuq]: Hainault 1831 (DAO). TPOvayok : Gillespie et al. 8422 , Bennett & Sullivan 13-0652 (DAO). Pt.Murray : Gillespie et al. 8179 , 8185 . Namaycush L.: Edlund 20, 25 (CAN), Edlund & Roncato-Spencer 24, 47 (CAN). Pt.Oterkvik : Gillespie et al. 7471 , 7497a, 7573 . Read I.: Porsild 17197 (CAN). Storkerson P.: Edlund 182, 200, 216, 221, 282 (CAN), Stretton 225 (DAO). Wollaston P.: D. Jenness 651 (CAN).Drabafladnizensis Wulfen, Fig. D.lactea. Elsewhere in the Canadian Arctic recorded from Baffin, Banks, Cornwallis and Southampton islands and scattered mainland sites . NUNAVUT. Falaise B.: Parker 91 10 (ALA).Drabaglabella Pursh, Figs Inl. and Ulukhaktok . Burns L. (S): Edlund 550 (CAN). Inl. (head)Minto : Edlund 79, 80A, 616, 618 (CAN), Gillespie et al. 10161, 10122a, 10167 (cf.) , 10166 , 10172, 10182, 10214 (CAN). Ulukhaktok: Porsild 17300 (CAN). NUNAVUT. Cambridge Bay: Bennett 14-0306 (UAAH), 13-0175 , 13-0654, 14-0376 (MO), 13-0224a (cf.) , 13-0648 (cf.) , Calder et al. s.n. (DAO), Edlund & Argus 12649 , 2861 (CAN), Fortier 26 (CAN), Gillespie et al. 8447, 8452a , 8471 (CAN), Parker & Jonsdottir 9092 (ALA), Polunin s.n. (CAN), Porsild 21626 (CAN), Stephens 979, 1011 , 1013, 1120 (CAN), 1076, 1261 (KSTC), Washburn 25 . Ferguson L. [Tahiryuaq]: Hainault 2116 (DAO). Greiner L.: Ponomarenko VI-039, VI-044 (CAN). Hadley B.: Edlund 100 (CAN). Johansen B.: Gillespie et al. 7826, 7829, 8144, 8163 , 7892 , 8041 , 8042 . “Long L.”: Lambert s.n. (CAN). Pt.Oterkvik : Gillespie et al. 7537, 7538, 7704, 7801a, 7810 (CAN), 7576a . Cr.Sinclair : Gillespie et al. 8255 (CAN), 8314 . “Trunsky L.”: Bennett et al. 14-0671 (MO).Drabajuvenilis Kom. (D.longipes Raup), Fig. Cr. and Ulukhaktok. We have also confirmed the first record from adjacent Banks I. ; this specimen was previously determined as D.?oblongata and D.glabella. These are the first records for the Canadian Arctic Archipelago. In the Cambridge Bay area, the species has been collected at the following four sites: 4 km northeast of Cambridge Bay along the road to Mt. Pelly (Bennett 13-0224b), where it grew around edge of nutrient enriched tundra pond with Cardaminepolemonioides, Epilobiumarcticum, Chrysospleniumrosendahlii, Hippurislanceolata and Tephroserispalustris; ca. 2 km northeast of Cambridge Bay along the road to Mt. Pelly, just over the bridge, growing in small rocky outcrops above the river ; east of the of DEW Line Station along the road to the village ; and on Long Point beach, between Long Point and Flagstaff Point ca. 10 km west of Cambridge Bay .Newly recorded for Victoria I., from Cambridge Bay, Sinclair NORTHWEST TERRITORIES. Ulukhaktok: Saarela & Bull 1463 . NUNAVUT. Cambridge Bay: Bennett 13-0224b , Edlund & Argus 12649 , Gillespie et al. 8399, 8452b (CAN), 8400 . Cr.Sinclair : Gillespie et al. 8274 (CAN).Drabalactea Adams, Figs Inl., Richard Collinson Inl., Storkerson P., Tahoe L. and Ulukhaktok . Inl. (head)Minto : Edlund 617, 80B, 81, 96 (CAN), Gillespie et al. 10213 , Porsild 17398, 17399 (CAN). Inl.Richard Collinson : Stretton 196, 215 (DAO). Ulukhaktok: Edlund 797 (CAN), Porsild 17297, 17298, mixed with D.fladnizensis, 17299 (CAN). Cr.NUNAVUT. “30-Mile ”: Bennett et al. 14-0665 (MO). Anderson B.: Edlund & Argus 12714 (CAN). Cambridge Bay: Bennett et al. 13-0216, 13-0647 , 13-0658 (DAO), 13-0643 (chars), Calder et al. s.n. , Edlund & Argus 12649 , 12859 (CAN), Gillespie 5840 (CAN), Polunin s.n. (CAN), Stephens 1012 (KSTC), 876, 1012B, 1015, 1075, 1268 , Sweatman & Smith (DAO). Ferguson L. [Tahiryuaq]: Bennett et al. 14-0668 (MO). Greiner L.: Ponomarenko VI-308 (CAN). Hadley B.: Edlund 118, 151, 42, 97 (CAN). Pt.Murray : Gillespie et al. 8178 , 8180 . Namaycush L.: Roncato-Spencer 3b (CAN). NE Victoria I.: Edlund 231 (CAN). Cr.Sinclair : Gillespie et al. 8273, 8275, 8278, 8279 (CAN). Storkerson P.: Edlund 196, 308, 309 (CAN). Tahoe L.: Porsild 17455A (CAN).Drabamicropetala Hook., Fig. Previously recorded from Cambridge Bay and Hadley B.  and newlNORTHWEST TERRITORIES. Natkusiak P.: Edlund 93, 103, 114 (CAN). NUNAVUT. Cambridge Bay: Calder et al. 24209 (aff.) (CAN). Hadley B.: Edlund 149 (CAN). Namaycush L.: Edlund 12 (CAN).Drabanivalis Lilj., Fig. Cr.”, Ferguson L., Mt. Bumpus, Murray Pt., Sinclair Cr. and “Trunsky L.” Elsewhere in the Canadian Arctic recorded from Axel Heiberg, Baffin, Banks, Bylot, Coats, Devon, Digges, Ellesmere, Gilmore, King William, Nottingham, Somerset and Southampton islands and across the mainland (Previously recorded from Cambridge Bay and Ulukhaktok . Thannhemainland .NORTHWEST TERRITORIES. Ulukhaktok: Edlund 895 (CAN), Porsild 17301 (CAN). Cr.NUNAVUT. “30-Mile ”: Bennett et al. 14-0666 (MO). Cambridge Bay: Bennett et al. 13-0642 (DAO), 14-0313, 14-0317 (MO), Polunin s.n. , Porsild 21628 (CAN), Stephens 1012A (CAN), 1119 . Ferguson L. [Tahiryuaq]: Bennett et al. 14-0669 (MO). Johansen B.: Gillespie et al. 7825, 8043 (CAN). Mt. Bumpus: Edlund 151 (CAN). Pt.Murray : Gillespie et al. 8178 . Cr.Sinclair : Gillespie et al. 8225b (CAN). “Trunsky L.”: Bennett et al. 14-0391 (MO).Drabanorvegica Gunn. (D.rupestris W.T.Aiton), Fig. Consaul et al. 3506 [CAN 10055172], 3512 [CAN 10055171]) and northern Quebec and Labrador  determined by G.A. Mulligan in 1997 and conf. by R. Elven in 2003. In Labrador . ElsewheLabrador . There aLabrador . The genLabrador .NUNAVUT. Cambridge Bay: Calder et al. s.n. (DAO).Drabaoblongata R.Br. ex DC. (D.groenlandica Ekman), Fig. Inl. and Ulukhaktok . Inl. (head)Minto : Gillespie et al. 10276 , Porsild 17397 (CAN). Pt.Peel : Edlund 430 . Ulukhaktok: Gray & Gibbard 25 (DAO), Edlund 798 (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 14-0318 (MO), Beschel 13491 (CAN), Calder et al. 24210 (DAO), Ponomarenko VI-058 (CAN). Mts.Colville : Gillespie et al. 7783 . Greiner L.: Ponomarenko VI-024 (CAN).Drabaoligosperma Hook., Fig. Known from two collections in the vicinity of Falaise B. on the south side of Wollaston P. , as mappNUNAVUT. Falaise B.: Eriksen et al. 983 , 988 (O).Drabapauciflora R.Br., Fig. Known on Victoria I. from a single collection from the vicinity of Namaycush L., as mapped in NUNAVUT. Namaycush L.: Roncato-Spencer 8 (CAN).Drabapilosa Adams ex DC., Figs Cr.”, Boot Inl., Cambridge Bay, Johansen B., Kuujjua R., Murray Pt. and Oterkvik Pt. Not known from elsewhere in the Canadian Arctic Archipelago. These collections represent a considerable range extension northwards. Elsewhere in the Canadian Arctic recorded from a few mainland sites , 9637 (cf.) , 9679 . Kuujjua R.: Gillespie et al. 9754 (cf.) . Cr.NUNAVUT. “30-Mile ”: Bennett et al. 14-0664 (MO). Cambridge Bay: Bennett et al. 13-0239 , 13-0259 , 13-0649 (DAO), 14-0319 , 14-0384 (UAAH), Stephens 1010 (CAN). Johansen B.: Gillespie et al. 7937 , 7960 , 8135 (CAN). Pt.Murray : Gillespie et al. 8183 (CAN). Pt.Oterkvik : Gillespie et al. 7497b, 7523 (CAN).Drabasimmonsii Elven & Al-Shehbaz , Figs Cr.”, Cambridge Bay, Greiner L., Kuujjua R., the head of Minto Inl., Mt. Bumpus, Mt. Pelly, Tahiryuaq, Tahoe L. and Ulukhaktok. The older records included here were previously treated under D.alpina L. . Inl. (head)Minto : Edlund 95 (CAN), Gillespie et al. 10059 (CAN). Tahiryuaq: Edlund 386 (CAN). Ulukhaktok: Edlund 718 (CAN). Cr.NUNAVUT. “30-Mile ”: Bennett et al. 14-0342 (MO). Cambridge Bay: Bennett 14-0375, 14-0307 (MO), 13-0159 , 14-0381 , Calder et al. 24211B (DAO), Gillespie et al. 8449 , 8451b (CAN), Ponomarenko VI-057A, VI-080a (cf.) (CAN), Sweatman & Smith 8 (DAO). Greiner L.: Ponomarenko VI-031, VI-051, VI-083C, VI-193, VI-296C, VI-322 (CAN). Mt. Bumpus: Edlund 186, 223 (CAN). TPOvayok : Bennett & Sullivan 13-0655 (DAO). Tahoe L.: Porsild 17454 (CAN).Drabasubcapitata Simmons, Fig. Inl. , Hadley B., Storkerson P., Washburn L. and northwestern Wollaston P.  and northern Quebec .Previously recorded from Cambridge Bay, Collinson P., the head of Minto aston P. . Thannhen Quebec . The soun Quebec  and one Inl.NORTHWEST TERRITORIES. Boot : Gillespie et al. 9700 (CAN). Inl. (head)Minto : Gillespie et al. 10300 (CAN). Natkusiak P.: Edlund 116, 123 (CAN). Wollaston P. (NW): Porsild 17224 . NUNAVUT. Cambridge Bay: Bennett et al. 13-0177 , 14-0311 , Porsild 21629 (CAN), Stephens 1114 (CAN), Washburn 43 , 43A (CAN). Collinson P.: Edlund & Argus 12761 (CAN). Hadley B.: Edlund 22 (CAN). Namaycush L.: Edlund 21 (CAN), Roncato-Spencer 9 (CAN). TPOvayok : Bennett & Sullivan 13-0644 . Storkerson P.: Edlund 201 (CAN). “Trunsky L.”: Bennett et al. 14-0398 . Washburn L.: Porsild 17458 (CAN).Erysimum : Bennett et al. 14-0419 . Greiner L.: Ponomarenko VI-040, VI-217, VI-223A (CAN). Hadley B.: Edlund 14, 15, 88, 89 (CAN). Johansen B.: Gillespie et al. 8026 . TPOvayok : Gillespie et al. 8437 , Gould s.n. (ALA), Stephens 865 . Namaycush L.: Edlund & Argus 12800A, 12800B (CAN), Edlund & Roncato-Spencer 26 (CAN), Edlund 7, 8 (CAN). Pt.Oterkvik : Gillespie et al. 7488 , 7804 (CAN). Unnamed lake ca. 60 mi. N of Cambridge Bay: Porsild 17477 (CAN). Read I.: Ross 1a (GH). Storkerson P.: Edlund 169 (CAN), P. Jenness 35 (CAN). “Trunsky L.”: Bennett et al. 14-0390 . Wollaston P.: D. Jenness 412 (CAN), Porsild 17225, 17226 (CAN).Parryanudicaulis (L.) Regel, Fig. Jenness 650) is assigned to this species based on its distinctly dentate-lobed leaves, linear-oblong anthers and torulose young fruit. P.arctica, including one from Richard Collinson Inlet (Edlund 419) mapped as P.nudicaulis by Parrya specimens analyzed so far from Nunavut and Northwest Territories  belong to P.arctica and that this species can be more robust on the southern edge of its range (such as southern Victoria Island) than is typical and that current keys indicate. Further study is needed to verify the presence and range of P.nudicaulis on Victoria Island. Elsewhere in the Canadian Arctic recorded from Arctic Yukon and adjacent Northwest Territories . Collections from Bernard Harbour, mainland Nunavut, mapped in P.arctica.One specimen .Physariaarctica (Wormsk. ex Hornem.) O’Kane & Al-Shehbaz, Fig. Inl., Mt. Lady Pelly, Namaycush L., the north side and head of Prince Albert S., Read I., Richard Collinson Inl., Ulukhaktok and Walker B. . C. Wollaston: Edlund 6, 49 (CAN). Kuujjua R.: Gillespie et al. 9762 . Inl. (head)Minto : Edlund 59 (CAN), Gillespie et al. 9481 (CAN), Porsild 17402 (CAN). Prince Albert P.: Oldenburg 54-655 , 54-235 (GH). Prince Albert S. (head): Edlund & Argus 12814 (CAN), Weerstra (DAO). Prince Albert S. (N): Stretton 40 (DAO). Inl.Richard Collinson : Edlund 140, 182 (CAN). Ulukhaktok: Edlund 292, 448 (CAN), Ross 24 (ALTA), 24A (GH), Saarela & Bull 1506 . Walker B.: Porsild 17494 (CAN). Wollaston P.: Oldenburg 54-493 (GH). NUNAVUT. Albert Edward B.: Ponomarenko VI-270 (CAN). Cambridge Bay: Bennett et al. 13-0176 , 13-0207 (od), Calder et al. 24195 (DAO), Hainault 2143 (DAO), Ponomarenko VI-073A (CAN), Stephens 981 (CAN), 1110 (KSTC). Falaise B.: Eriksen et al. 931 (ALA). Ferguson L. [Tahiryuaq]: Hainault 2034 (DAO). Greiner L.: Ponomarenko VI-201 (CAN). Hadley B.: Edlund 29, 110 (CAN). Johansen B.: Gillespie et al. 7886 , Oswald 149 (DAO). Mt. Lady Pelly [Amaaqtuq]: Hainault 1888 (DAO). TPOvayok : Gillespie et al. 8430 , Gould s.n. (ALA). Namaycush L.: Edlund 15, 22, 36 (CAN). Pt.Oterkvik : Gillespie et al. 7465 . Read I.: Porsild 17199 (CAN). Cr.Sinclair : Gillespie et al. 8332 . “Trunsky L.”: Bennett et al. 14-0393 (CAN). Unnamed lake ca. 60 mi. N of Cambridge Bay: Porsild 17476 (CAN).CaryophyllalesPlumbaginaceae [1/1]Armeria Willd. [1]Armeriascabra Pall. ex Roem. & Schult. (A.maritimasubsp.sibirica (Turcz. ex Boiss.) Nyman), Figs Pt., the head of Minto Inl., Mt. Lady Pelly, Richard Collinson Inl. and Wollaston P. (Shindman s.n.) was gathered on George Island at the head of the sound during “Operation Magnetic, 1949”, a magnetic survey of the Canadian Arctic, of which B. Shindman was an expedition member; this was the only site visited on Victoria Island . C. Wollaston: Edlund 5 (CAN). Diamond Jenness P. (W end): Stretton 84 (DAO). Pt.Gordon : Stretton 198 (DAO). Kuujjua R.: Dutilly 18776, 18777, 18777a (QFA), Gillespie et al. 9805 . Inl. (head)Minto : Edlund 126 (CAN), Gillespie et al. 10197 , Porsild 17404 (CAN). Prince Albert S. (head): Edlund & Argus 12815 (CAN), Shindman s.n. (DAO). Inl.Richard Collinson : P. Jenness 12 (CAN), Edlund 176 (CAN). Ulukhaktok: Bliss s.n. , Edlund 294 (CAN), Oldenburg 45-1544 (CAN), Ross 29 , 29A (GH), Saarela & Bull 1414 . Cr.NUNAVUT. “30-Mile ”: Bennett et al. 14-0359 . Anderson B.: Edlund & Argus 12705 (CAN). Cambridge Bay: Bennett et al. 13-0232 (chars), 13-0309 , Gillespie et al. 8464 , 8507 (CAN), Stephens 1005 (KSTC), 1085 , Sutton 1005 (CAN). Falaise B.: Eriksen et al. 971 (ALA), Parker 9109 . Hadley B.: Edlund 114, 143 (CAN). Johansen B.: Gillespie et al. 7898 (CAN). Mt. Lady Pelly [Amaaqtuq]: Jones & Hainault 28 (DAO). Namaycush L.: Edlund & Roncato-Spencer 46 (CAN), Edlund 27, 130 (CAN). Pt.Oterkvik : Gillespie et al. 7516 , 7563 (CAN). Read I.: Oldenburg 42-501, 43-1072, 43-954, 44-1036 (CAN), Ross 25 (ALTA), 25A (GH). Cr.Sinclair : Gillespie et al. 8333 (CAN). “Trunsky L.”: Bennett et al. 14-0389 . Wollaston P.: D. Jenness 578 (CAN).Polygonaceae : Hainault 2005 (DAO), Ponomarenko VI-232A, VI-305A (CAN). Hadley B.: Edlund 72, 137 (CAN). Johansen B.: Gillespie et al. 7900, 7942 (CAN). Mt. Bumpus: Edlund 268 (CAN). Namaycush L.: Edlund & Roncato-Spencer 44 (CAN). Pt.Oterkvik : Gillespie et al. 7703 . Prince Albert S. (head): Edlund 96 (CAN). Read I.: Oldenburg 43-1035 (CAN). Storkerson P.: Edlund 186 (CAN). Washburn L.: Oldenburg 46-2183 (CAN).Oxyriadigyna Hill, Fig. Inl., Natkusiak P., the north side of Prince Albert S., Richard Collinson Inl., Tahiryuaq, Walker B.  and Wollaston P. . C. Wollaston: Edlund 47 (CAN). Kuujjua R.: Dutilly 18836 (QFA), Gillespie et al. 9739 , Stretton 73 (DAO). Inl. (head)Minto : Edlund 108 (CAN), Gillespie et al. 10215 , 9463 . Natkusiak P.: Edlund 72 (CAN). “Oldenburg L.”: Oldenburg 45-1354 (CAN). Prince Albert S. (head): Edlund 56 (CAN). Prince Albert S. (N): Oldenburg 46-2293 (CAN), Stretton 37 (DAO). Inl.Richard Collinson : Edlund 192 (CAN), P. Jenness 14 (CAN). Tahiryuaq: Edlund 157 (CAN). Ulukhaktok: Dutilly 18652 (QFA), Edlund 366 (CAN), Gray & Gibbard 31 (DAO), Oldenburg 45-1560 (CAN), Porsild 17275 (CAN), Ross 4 , Saarela & Bull 1486 . Walker B.: Oldenburg 45-1502 (CAN). Cr.NUNAVUT. “30-Mile ”: Bennett et al. 14-0355 . Anderson B.: Edlund & Argus 12715 (CAN). Burns L. (S): Edlund 155 (CAN). Cambridge Bay: Bennett & Sullivan 13-0293 , Consaul & Gillespie 1129 (CAN), Gillespie et al. 8458 , Polunin s.n. (CAN), Ponomarenko VI-072 (CAN). Falaise B.: Eriksen et al. 968 (ALA). Ferguson L. [Tahiryuaq]: Hainault 1956 (DAO). Greiner L.: Ponomarenko VI-214, VI-224A, VI-290 (CAN). Hadley B.: Edlund 17, 84 (CAN). Johansen B.: Gillespie et al. 7932 , 8101 . TPOvayok : Gillespie et al. 8424 , Stephens 986 . Pt.Oterkvik : Gillespie et al. 7473 . Prince Albert S. (head): Edlund 90 (CAN). Cr.Sinclair : Gillespie et al. 8253 , 8322 . Storkerson P.: Edlund 164, 192 (CAN), Stretton 222 (DAO). Washburn L.: Oldenburg 46-2185 (CAN). Wollaston P.: D. Jenness 655 (CAN).Caryophyllaceae : Bennett et al. 14-0414 , Hainault 1949, 2007 (DAO). Greiner L.: Ponomarenko VI-160, VI-244 (CAN). Hadley B.: Edlund 134, 327 (CAN). Johansen B.: Gillespie et al. 7824 , 7971 . TPOvayok : Gillespie et al. 8436 , Stephens 1166 . Namaycush L.: Edlund 27 (CAN). Pt.Oterkvik : Gillespie et al. 7577, 7670, 7672 (CAN). Prince Albert S. (head): Edlund 78 (CAN). Read I.: Oldenburg 42-520, 43-927 (CAN). Cr.Sinclair : Gillespie et al. 8226 , 8312 . Storkerson P.: Edlund 171, 202, 224 (CAN).Cerastiumregelii Ostenf. (C.gorodkovianum Schischk.), Figs Inl. and Storkerson P. , 9710 (CAN). Burns L. (S): Edlund 568 (CAN). Kuujjua R.: Gillespie et al. 10007 (CAN). “Oldenburg L.”: Oldenburg 45-1342 (CAN). Natkusiak P.: Edlund 86 (CAN). Inl.Richard Collinson : Stretton 220 (DAO). NUNAVUT. Cambridge Bay: Bennett et al. 13-0252 , Edlund & Argus 12669 (CAN), Gillespie et al. 8480 , Oldenburg 44-954 (CAN), Polunin s.n. , Stephens 1049, 1265 , 1063, 1123, 1125 (CAN). Collinson P.: Edlund & Argus 12769 . Ferguson L. [Tahiryuaq]: Edlund & Argus 12775 . Greiner L.: Ponomarenko VI-104, VI-123, VI-174, VI-203M (CAN). Hadley B.: Edlund 44, 70, 106 (CAN). Mt. Lady Pelly [Amaaqtuq]: Hainault 1841 (DAO), Jones 31 (DAO). Namaycush L.: Edlund 11 (CAN). Natkusiak P.: Edlund 335 (CAN). Storkerson P.: Edlund 219 (CAN).Honckenyapeploides subsp. diffusa (Hornem.) Hultén (Arenariapeploidesvar.diffusa Hornem.), Figs Inl., Read I.  and Ulukhaktok . C. Wollaston: Edlund 23 (CAN). Kuujjua R.: Gillespie et al. 9916 , Oldenburg 54-221 (GH). Inl. (head)Minto : Gillespie et al. 10192 , Porsild 17383 (CAN). Ulukhaktok: Edlund 500, 785 (CAN). Walker B.: Oldenburg 45-1501 (CAN). NUNAVUT. Albert Edward B.: Edlund & Argus 12785 (CAN). Anderson B.: Edlund & Argus 12708 (CAN). Cambridge Bay: Bennett 14-0327 , 13-0243 , Gillespie et al. 8476 (CAN), Stephens 1273 (CAN). Johansen B.: Gillespie et al. 8008 , 8097 . Pt.Murray : Gillespie et al. 8199 . Pt.Oterkvik : Gillespie et al. 7629 (CAN). Read I.Oldenburg 42-497 (CAN), 43-1084 , Ross 9A (GH). Cr.Sinclair : Gillespie et al. 8241 .Sabulina : Bennett et al. 14-0407 (CAN). Greiner L.: Ponomarenko VI-036, VI-117 (CAN). Hadley B.: Edlund 75, 140, s.n. (CAN). Johansen B.: Gillespie et al. 7895, 7923 (CAN), 8076 . Mt. Bumpus: Edlund 267 . TPOvayok : Gillespie et al. 8439 . Namaycush L.: Edlund & Roncato-Spencer 85 (CAN). Pt.Oterkvik : Gillespie et al. 7525, 7666 (CAN), 7591 . Read I.: Oldenburg 43-928 (CAN), Porsild 17193 (CAN). Cr.Sinclair : Gillespie et al. 8265 , 8323 (CAN). Storkerson P.: Edlund 225 (CAN). Washburn L.: Porsild 17457 (CAN). Wollaston P. (NW): Porsild 17217 (CAN).Sabulinastricta (Sw.) Rchb. (Minuartiastricta (Sw.) Hiern), Fig. Known from a single collection from the Johansen B. area; see details in NUNAVUT. Johansen B.: Gillespie et al. 7966 .Sagina : Hainault 1807 (DAO). TPOvayok : Gould s.n. (ALA), Stephens 1053, 1168 (CAN). Natkusiak P.: Edlund 333 (CAN). Pt.Oterkvik : Gillespie et al. 7496 , 7701 (CAN). Read I.: Oldenburg 42-522, 43-1066, 43-915 (CAN), Ross 12A (GH). “Trunsky L.”: Bennett et al. 14-0396 . Wollaston P.: D. Jenness 656 (CAN).Sileneinvolucrata (Cham. & Schltdl.) Bocquet subsp. involucrata (Melandriumaffine (J.Vahl ex Fr.) J.Vahl), Fig. Inl., Read I., Wollaston P., Ulukhaktok , Gillespie et al. 9624 (CAN). Kuujjua R.: Gillespie et al. 9738 (CAN), 9922 . Inl. (head)Minto : Edlund 119, 158, 601, 68 (CAN), Gillespie et al. 10057a, 10069 (CAN), 10118 , 10162, 10263 . Ulukhaktok: Bandringa 341 , Edlund 325, 336 (CAN), Oldenburg 45-1704 , Porsild 17281 , Ross 23 (ALTA), 23A (GH), Saarela & Bull 1427 . Cr.NUNAVUT. “30-Mile ”: Bennett et al. 14-0348 (CAN). Cambridge Bay: Edlund & Argus 12897 (CAN), Oldenburg 44-904 (CAN), Polunin s.n. (CAN), Porsild 21613 (CAN), Stephens 983, 1032, 1112 (KSTC), 1056, 1111, 1240 , Stephens 994 (CAN). Johansen B.: Gillespie et al. 7823 , 7978 (CAN). Pt.Murray : Gillespie et al. 8181 (CAN). Pt.Oterkvik : Gillespie et al. 7594 , 7700 (CAN). Cr.Sinclair : Gillespie et al. 8326, 8334 , 8327 (CAN). Wollaston P.: D. Jenness 658, 658a (CAN).Sileneinvolucrata subsp. tenella (Tolm.) Bocquet, Fig. CAN following taxonomy of This is a boreal-low Arctic taxon, known from Cambridge Bay, Clouston B., Kuujjua R., Read I. and Ulukhaktok. Elsewhere in the Canadian Arctic recorded from Banks I. and mainland sites, based on recently-revised specimens at NORTHWEST TERRITORIES. Kuujjua R.: Gillespie et al. 9993 (CAN), 9737 . Ulukhaktok: Ross 23 (ALTA). NUNAVUT. Cambridge Bay: Oldenburg 44-905 (CAN). Clouston B.: Gillespie et al. 7731 . Read I.: Oldenburg 42-526, 43-910, 43-953 (CAN).Sileneostenfeldii (A.E.Porsild) J.K.Morton (Melandriumostenfeldii A.E.Porsild), Fig. Inl. (conf.), Johansen B. (conf.) and Richardson I. Newly recorded from Boot Inl., C. Wollaston, Falaise B., Mt. Bumpus and Oterkvik Pt. The Victoria I. occurrences mark the eastern limit of the species, which is otherwise known in the Canadian Arctic from Banks I. and western mainland sites . C. Wollaston: Edlund 159 (CAN). Inl. (head)Minto : Gillespie et al. 10063 , Porsild 17387 (CAN). Walker B.: Porsild 17492 (CAN). NUNAVUT. Clouston B.: Gillespie et al. 7756 . Falaise B.: Eriksen et al. 979 (ALA). Johansen B.: Gillespie et al. 7976 . Mt. Bumpus: Edlund 237, 262 (CAN). Pt.Oterkvik : Gillespie et al. 7527 (CAN), 7586 .Sileneuralensis subsp. arctica (Th.Fr.) Bocquet  Hultén), Figs S.uralensissubsp.arctica, whereas we find the majority of collections from Victoria I. to be S.uralensissubsp.uralensis. Subspecies arctica is known from south of Burns L., Cambridge Bay, Kuujjua R., the head of Minto Inl., Richard Collinson Inl., Tahiryuaq, Ulukhaktok and Walker B.. Its full range in the Canadian Arctic is unclear as all relevant herbarium material has not yet been determined following the taxonomy proposed by arctica is the common taxon in the Canadian Arctic Archipelago. It is, however, known from mainland sites adjacent to Victoria I. (toria I. .NORTHWEST TERRITORIES. Burns L. (S): Edlund 66 (CAN). Kuujjua R.: Edlund 655 (CAN), Gillespie et al. 9825 (CAN), 9839 . Inl. (head)Minto : Edlund 55 (CAN). Inl.Richard Collinson : Edlund 703 (CAN), Stretton 216 (DAO). Tahiryuaq: Edlund 384 (CAN). Ulukhaktok: Edlund 887, 888 (CAN). Walker B.: Porsild 17491 (CAN). NUNAVUT. Cambridge Bay: Bennett 13-0226 , Calder et al. 24196 (DAO), Edlund & Argus 12642 (CAN), Gould s.n. (ALA), Porsild 21614 (CAN). Johansen B.: Gillespie et al. 8011 . TPOvayok : Gillespie et al. 8431 . Pt.Oterkvik : Gillespie et al. 7716 .Sileneuralensis (Rupr.) Bocquet subsp. uralensis  Fenzl, M.apetalumsubsp.arcticum (Fr.) Hultén), Fig. Sileneuralensis follows uralensis. S.uralensissubsp.arctica, whereas our identifications indicate that both this and subsp. uralensis occur on Victoria I., as Inl., the head of Prince Albert S., Read I. , Richard Collinson Inl., Storkerson P., Ulukhaktok and Walker B.  of these areas. Elsewhere in the Canadian Arctic subsp. uralensis is known from Banks and Baffin islands as well as mainland sites , 9566 , 9689 . Kuujjua R.: Gillespie et al. 9969, 9802 . Inl. (head)Minto : Gillespie et al. 9496, 10057b (CAN). Natkusiak P.: Edlund 109 (CAN). “Oldenburg L.”: Oldenburg 45-1351 (CAN). Prince Albert S. (N): Oldenburg 46-2286 (CAN). Prince Albert P.: Oldenburg 54-642 (UBC). Inl.Richard Collinson : Edlund 600 (CAN). Tahiryuaq: Edlund 159 (CAN). Ulukhaktok: Edlund 353 (CAN), Oldenburg 42-73C, 45-1703, 45-1705, 45-1706 (CAN). Walker B.: Oldenburg 45-1534A (CAN). NUNAVUT. Albert Edward B.: Ponomarenko VI-249, VI-259 (CAN). Cambridge Bay: Edlund & Argus 12889A (CAN), Gillespie et al. 8383 , Gillespie et al. 8453 (CAN), Oldenburg 44-903, 44-904a (CAN), Polunin s.n. , Ponomarenko VI-053, VI-313 (CAN), Stephens 942, 1030, 1214, 1215, 1216 , 1031, 1078, 1165 (KSTC). Clouston B.: Gillespie et al. 7720 (CAN). Falaise B.: Eriksen et al. 959 (ALA). Greiner L.: Ponomarenko VI-042, VI-184, VI-286, VI-294B (CAN). Hadley B.: Edlund 43, 159 (CAN). Johansen B.: Gillespie et al. 7871 (CAN), 8046 . Namaycush L.: Edlund 144, 145, 146 (CAN). Pt.Oterkvik : Gillespie et al. 7638 (CAN). Prince Albert S. (head): Edlund 79 (CAN). Read I.Oldenburg 43-1068, 43-1069, 44-1037 (CAN). Cr.Sinclair : Gillespie et al. 8289 (CAN). Storkerson P.: Edlund 170, 241, 283, 307 (CAN). Washburn L.: Oldenburg 46-2179 (CAN). Wollaston P.: D. Jenness 657 (CAN).Stellaria : Hainault 1981, 2051, 2083 (DAO). Greiner L.: Ponomarenko VI-032, VI-112, VI-162, VI-211, VI-221, VI-319 (CAN). Hadley B.: Edlund 95, 131, 157 (CAN). “Long L.”: Lambert s.n. . Mt. Bumpus: Edlund 143, 196, 215, 260, 275 (CAN). TPOvayok : Gillespie et al. 8438 , Gould s.n. (ALA). Namaycush L.: Edlund & Roncato-Spencer 58 (CAN). Pt.Oterkvik : Gillespie et al. 7526 , 7628 , Gillespie et al. 7803 . Prince Albert S. (head): Edlund 80 (CAN). Read I.: Oldenburg 42-524 , 43-1078, 43-930 (CAN), Porsild 17194 (CAN). Cr.Sinclair : Gillespie et al. 8251 , 8269 (CAN), 8317 , 8318 . Storkerson P.: Edlund 193, 232 (CAN). Tuktu R.: Gould s.n. (ALA). Washburn L.: Edlund & Argus 12798 (CAN), Oldenburg 46-2181 (CAN).Suaeda Forssk. ex J.F. Gmel. [1]Suaedacalceoliformis (Hook.) Moq., Fig. Inl., Johansen B., the head of Minto Inl. and Oterkvik Pt., with these populations representing the species’ northern range limit. Additional information is provided in Known from Boot Inl.NORTHWEST TERRITORIES. Boot : Gillespie et al. 9662 . Inl. (head)Minto : Gillespie et al. 10243 (CAN). NUNAVUT. Johansen B.: Gillespie et al. 8068 , 8137 . Pt.Oterkvik : Gillespie et al. 7570 .Montia L. [1]Montiafontana L., Fig. Known from a single collection gathered in the Ulukhaktok area in 1949 . ElsewheNORTHWEST TERRITORIES. Ulukhaktok: Porsild 17286 (CAN).EricalesPrimulaceae [2/3]PrimulaceaeKey to Androsace : Bennett et al. 14-0406 (UBC). Greiner L.: Ponomarenko VI-118 (CAN). Johansen B.: Gillespie et al. 7967 , 8050 (CAN). “Long L.”: Lambert s.n. . Mt. Bumpus: Edlund 222 (CAN). Pt.Oterkvik : Gillespie et al. 7540 . South-central Victoria I.: Edlund 541 (CAN).Rhododendron : Bennett et al. 14-0421 (BABY). Johansen B.: Gillespie et al. 7850 . Kugaluk R.: Edlund & Nixon 207 (CAN). Mt. Bumpus: Edlund 209 (CAN). Pt.Oterkvik : Gillespie et al. 7460 . Wollaston P.: D. Jenness 579 (CAN).Rhododendrontomentosum subsp. decumbens (Aiton) Elven & D.F.Murray (Ledumdecumbens (Aiton) Lodd. ex Steud., L.palustrevar.decumbens Aiton, L.palustresubsp.decumbens (Aiton) Hultén, Figs Empetrumnigrum; a voucher should be obtained. R.lapponicum, there is a conspicuous gap in distribution in the central Canadian Arctic Archipelago (Previously recorded from Ulukhaktok (Porsild obs.) , which whipelago NUNAVUT. Ferguson L. [Tahiryuaq]: Bennett et al. 14-0418 . Johansen B.: Gillespie et al. 7849 . “Long L.”: Lambert s.n. .Vaccinium : Bennett et al. 14-0428 (CAN). Johansen B.: Gillespie et al. 7848 . “Long L.”: Lambert s.n. (CAN). Mt. Bumpus: Edlund 210 (CAN). Pt.Murray : Edlund 530 (CAN). Pt.Oterkvik : Gillespie et al. 7520 . Cr.Sinclair : Gillespie et al. 8344 . Walker B.: Oldenburg 45-1542 (CAN).Vacciniumvitis-idaea subsp. minus  Hultén, Figs Inl., Mt. Bumpus and Ulukhaktok. Of these records we are only aware of vouchers from “Long L.”, and occurrence in the Johansen B. area is confirmed by our collection made there in 2008. Previously recorded from Walker B., based on an observation by H. Larsen reported in NUNAVUT. Ferguson L. [Tahiryuaq]: Bennett et al. 14-0420 (CAN). Johansen B.: Gillespie et al. 7830 (CAN), 8037 . “Long L.”: Lambert s.n. .Rubiaceae [1/1]Galium L. [1]Galiumaparine L., Figs Festucarubra, Poapratensissubsp.pratensis and Loliumperenne) and the native Descurainiasophioides. We suspect the bedstraw was a contaminant of the mixed seed from which we assume the grasses originated, as there are no other records of this non-native, annual taxon for the community. Whatever its origin, this is the first record for Nunavut. It is unknown, however, if the species persists; our collection may have extirpated it from the territory.A single small vegetative plant was found growing in Cambridge Bay, in 2017, in heavily disturbed ground with several introduced grasses (NUNAVUT. Cambridge Bay: Saarela & Teeter 5295 (CAN).Gentianaceae Mertensia Roth [2]Mertensia Plantaginaceae : Edlund & Argus 12773, 12774 (cf.) (CAN). Greiner L.: Ponomarenko VI-202 (CAN). Johansen B.: Gillespie et al. 7907 . Pt.Oterkvik : Gillespie et al. 7677 .Plantagocanescens Adams, Figs Inl. and Ulukhaktok , the same general area where the taxon was collected by Edlund & Argus in 1987. Elsewhere in the Canadian Arctic recorded from Banks I., mainland Northwest Territories and a few sites on mainland Nunavut as far east as Bathurst Inl. (Previously recorded from Cambridge Bay (Augustus Hills area), the head of Minto ukhaktok . Thannherst Inl. . The VicInl.NORTHWEST TERRITORIES. Boot : Gillespie et al. 9534 . Kuujjua R.: Gillespie et al. 9829, 9927 . Inl. (head)Minto : Edlund 146 (CAN), Gillespie et al. 10028 , 10120, 10134 (CAN), 10264 , Porsild 17418 (CAN). Ulukhaktok: Edlund 286, 781 (CAN). NUNAVUT. Cambridge Bay: Edlund & Argus 12853 (CAN). Johansen B.: Gillespie et al. 7991 , 8103 .Pinguicula L. [1]Pinguiculavulgaris L. subsp. vulgaris, Fig. Known from multiple collections gathered in 2008 and 2010 at Clouston B., Kuujjua R. and Johansen B., and an unvouchered report; see NORTHWEST TERRITORIES. Kuujjua R.: Gillespie et al. 9878, 9880 (CAN), 9967 . NUNAVUT. Clouston B.: Gillespie et al. 7718 . Johansen B.: Gillespie et al. 8132 (CAN).Orobanchaceae : Hainault 1970 (DAO). Greiner L.: Ponomarenko VI-033, VI-099, VI-108, VI-128, VI-232 (CAN). Hadley B.: Edlund 124, 340 (CAN), 78 . Johansen B.: Gillespie et al. 7936 (CAN). Mt. Bumpus: Edlund 245 (CAN). Pt.Murray : Gillespie et al. 8173 . Namaycush L.: Edlund & Roncato-Spencer 59 (CAN), Edlund 139 (CAN). Pt.Oterkvik : Gillespie et al. 7506 , 7715 (CAN), 7792 .Pedicularisarctoeuropaea (Hultén) Molau & D. F. Murray (P.sudeticasubsp.arctoeuropaea Hultén), Figs Inl. and Storkerson P. , 9628 . Kuujjua R.: Gillespie et al. 9923 (CAN). Inl. (head)Minto : Gillespie et al. 10249 . “Oldenburg L.”: Oldenburg 45-1358 . NUNAVUT. Cambridge Bay: Oldenburg 44-923B, 44-928 (CAN). Read I.: Oldenburg 42-528 (CAN), Ross 3A (GH). Cr.Sinclair : Gillespie et al. 8288 . Storkerson P.: Edlund 240 (CAN).Pediculariscapitata Adams, Figs Inl. , Mt. Bumpus, Mt. Pelly, Prince Albert S. (Porsild obs.), inland from the head of Prince Albert S., Tahoe L. (Porsild obs.), Ulukhaktok and Wollaston P. . Byron B.: Dushenko 5 (UVIC). Kuujjua R.: Gillespie et al. 9742 , 9992 . Inl. (head)Minto : Edlund 47, 602 (CAN), Gillespie et al. 9465 (CAN). Inl.Richard Collinson : Edlund 130, 485 (CAN). Ulukhaktok: Edlund 287 (CAN), Gray & Gibbard 37 (DAO), Oldenburg 42-16, 45-1632 (CAN), 45-1633 , 54-217, 54-217a (GH), Porsild 17331 (CAN), Ross 8A (ALTA), 8B (GH) Saarela & Bull 1489 (CAN), Stretton 53 (DAO). Walker B.: Oldenburg 45-1539 . Wollaston P.: Oldenburg 54-514 (GH). NUNAVUT. Cambridge Bay: Bennett et al. 13-0174 , Calder et al. 24159 (DAO), Edlund & Argus 12667 (CAN), Fortier 11 (CAN), Gillespie et al. 8387 , Oldenburg 44-889 , Polunin s.n. (CAN), Stephens 962 (KANU), Sweatman & Smith 18 (DAO). Mts.Colville : Gillespie et al. 7773 (CAN). Falaise B.: Eriksen et al. 932 (ALA). Ferguson L. [Tahiryuaq]: Hainault 2060 (DAO). Greiner L.: Ponomarenko VI-121A, VI-215 (CAN). Hadley B.: Edlund 83, 158 (CAN). Johansen B.: Gillespie et al. 7818 . “Long L.”: Lambert s.n. . Mt. Bumpus: Edlund 257 (CAN). Mt. Lady Pelly [Amaaqtuq]: Jones & Hainault 1886 (DAO). TPOvayok : Stephens 987 (CAN). Namaycush L.: Edlund & Roncato-Spencer 61 (CAN). Pt.Oterkvik : Gillespie et al. 7517 , 7800 (CAN). Prince Albert S. (head): Edlund 92 (CAN). Cr.Sinclair : Gillespie et al. 8291 (CAN). Washburn L.: Oldenburg 46-2146 (CAN). Wollaston P.: D. Jenness 307b (CAN).Pedicularishirsuta L., Fig. Inl. eastwards .Pedicularislanata Willd. ex Cham. & Schltdl., Figs Inl. , Namaycush L., the head of Prince Albert S. , Read I., Richard Collinson Inl., Ulukhaktok and Wollaston P. , 9677 . Burns L. (S): Edlund 51 (CAN). C. Wollaston: Edlund 3 (CAN). Kuujjua R.: Gillespie et al. 9765 , Stretton 68 (DAO). Inl. (head)Minto : Edlund 145 (CAN), Gillespie et al. 10306 , 9478 (CAN). “Oldenburg L.”: Oldenburg 45-1360 . Prince Albert P.: Oldenburg 54-258 (GH). Prince Albert S. (head): Stretton 11, 19 (DAO) . Prince Albert S. (N): Oldenburg 46-2280 (CAN). Prince Albert S. (S): Edlund 533 (CAN). Inl.Richard Collinson : Edlund 184 (CAN), Stretton 219 (DAO). Ulukhaktok: Edlund 297 (CAN), Gray & Gibbard 7 (DAO), Porsild 17327, 17332 (CAN), Ross 1A (ALTA), 1B (GH), Saarela & Bull 1504 , Salokangas 21 (CAN), Stretton 61 (DAO). Walker B.: Oldenburg 45-1540 (CAN). Cr.NUNAVUT. “30-Mile ”: Bennett et al. 14-0362 (UBC). Cambridge Bay: Bennett et al. 13-0257 , 14-0380 (UBC), Calder et al. 24160 (DAO), Edlund & Argus 12628, 12672 (CAN), Gillespie et al. 8415 , Oldenburg 44-923 (CAN), 44-930 , Polunin s.n. , Stephens 1209 , Stephens 943 (KANU), Sweatman & Smith 4 (DAO), Tasker 7648 (CAN). Ferguson L. [Tahiryuaq]: Hainault 1927 (DAO). Greiner L.: Ponomarenko VI-026, VI-222 (CAN). Greely Haven: Fortier 92 (CAN). Hadley B.: Edlund 11, 109 (CAN). “Long L.”: Lambert s.n. (CAN). Mt. Lady Pelly [Amaaqtuq]: Hainault 1800 (DAO). Pt.Murray : Stretton 30 (DAO). Namaycush L.: Edlund & Roncato-Spencer 7, 19, 110 (CAN). Pt.Oterkvik : Gillespie et al. 7461 , 7492, 7508 . Read I.: Oldenburg 43-912, 43-936, 43-969 (CAN), Porsild 17210 (CAN), Ross 30A (GH), 30B (ALTA). Washburn L.: Oldenburg 46-2147 (CAN). Wollaston P.: D. Jenness 283b (CAN).Pedicularislangsdorffii subsp. arctica (R.Br.) Pennell ex Hultén (P.arctica R.Br.), Fig. Inl. , the head of Prince Albert S. , Read I. (Porsild obs.) and Ulukhaktok , 9625 . Burns L. (S): Edlund 65 (CAN). Kuujjua R.: Gillespie et al. 9798 . Inl. (head)Minto : Edlund 49 (CAN), Gillespie et al. 9479, 10247 (CAN). Ulukhaktok: Edlund 343, 747 (CAN), Oldenburg 42-16A, 45-1634 (CAN), Ross 1B (GH), Saarela & Bull 1496 . Walker B.: Oldenburg 45-1521A (CAN). Wollaston P.: Oldenburg 54-516 (GH). NUNAVUT. Cambridge Bay: Bennett et al. 13-0168 , Calder et al. 24201 (DAO), Edlund & Argus 12671 (CAN), Gillespie et al. 8472 (CAN), Oldenburg 44-930B (CAN), Polunin s.n. , Porsild 21642 (CAN), Stephens 1208 (KANU), 944 , 947 (CAN), Sutton 1046 (CAN). Falaise B.: Eriksen et al. 955 (ALA). Ferguson L. [Tahiryuaq]: Hainault 1963 (DAO). Greiner L.: Ponomarenko VI-163 (CAN). Hadley B.: Edlund 78 , Gould s.n. (ALA). Johansen B.: Gillespie et al. 7896 . “Long L.”: Lambert s.n. (CAN). Namaycush L.: Edlund & Roncato-Spencer 60, 111 (CAN). Pt.Oterkvik : Gillespie et al. 7507 . Cr.Sinclair : Gillespie et al. 8287 . Storkerson P.: Edlund 305 (CAN).Asteraceae [13/25/26]Asteraceae : Hainault 1999 (DAO). Greiner L.: Ponomarenko VI-287, VI-325 (CAN) Johansen B.: Gillespie et al. 8087 , 8102 . TPOvayok : Stephens 1180 . Cr.Sinclair : Gillespie et al. 8276 (CAN). Wollaston P.: D. Jenness 375a (CAN).Erigeronporsildii G.L.Nesom & D.F.Murray (Erigerongrandiflorussubsp.arcticus A.E.Porsild), Fig. Known only from Ulukhaktok, the type locality . The mosNORTHWEST TERRITORIES. Ulukhaktok: Porsild 17341 (CAN), 17342 , Stretton 54 (DAO).Eurybiasibirica (L.) G.L.Nesom (Astersibiricus L.), Fig. Inl. (CAN 10089223) and one of Symphyotrichumpygmaeum (CAN 10088665) bear the collection number 349a, suggesting they were taken as a single gathering and later split upon realization the collection was mixed.Collected on the Wollaston P. by D. Jenness in 1915, during the Canadian Arctic Expedition . SubsequInl. . Both thNUNAVUT. Wollaston P.: Johansen 349a (CAN).Hulteniellaintegrifolia (Richardson) Tzvelev (Arctanthemumintegrifolium (Richardson) Tzvelev, Chrysanthemumintegrifolium Richardson, Dendrathemaintegrifolium (Richardson) Tzvelev, Leucanthemumintegrifolium (Richardson) DC.), Figs Inl., Cape Baring, Diamond Jenness P., Falaise B., Ferguson L., the Greiner L. watershed, the head of Minto Inl., Mt. Bumpus, Mt. Lady Pelly, Namaycush L., “Oldenburg L.”, Oterkvik Pt., an inland site on Prince Albert P., the north side and head of Prince Albert S., Read I., “Trunsky L.”, Walker B. and Washburn L. Elsewhere in the Canadian Arctic recorded throughout the archipelago except for the western Queen Elizabeth Islands and across the mainland , Gillespie et al. 9589 . C. Baring: Edlund 408 (CAN). Kuujjua R.: Dutilly 18775 (QFA), Edlund 631 (CAN), Gillespie et al. 9743 . Inl. (head)Minto : Edlund 167 (CAN), Gillespie et al. 9483 (CAN). “Oldenburg L.”: Oldenburg 45-1361 (CAN). Prince Albert P.: Oldenburg 54-643 (UBC). Prince Albert S. (head): Edlund 375 (CAN). Prince Albert S. (N): Oldenburg 46-2260 (CAN). Ulukhaktok: Edlund 299 (CAN), Oldenburg 42-21, 42-23a, 45-1720 (CAN), Porsild 17339 (CAN), Saarela & Bull 1477 (CAN). Walker B.: Oldenburg 45-1512 (CAN). NUNAVUT. Albert Edward B.: Ponomarenko VI-269 (CAN). Byron B.: Edlund & Argus 12847 (CAN), Dushenko 21 (UVIC). Cambridge Bay: Bennett et al. 13-0180 , Edlund & Argus 12627 , Gillespie et al. 8417 , Gould s.n. (ALA), Oldenburg 44-888 (CAN), Polunin s.n. (CAN), Porsild 21645 (CAN), Sutton 1047 . Falaise B.: Eriksen et al. 945 (ALA). Ferguson L. [Tahiryuaq]: Bennett et al. 14-0412 , Hainault 2033 (DAO). Greiner L.: Ponomarenko VI-144, VI-168, VI-228 (CAN). Hadley B.: Edlund 24, 108 (CAN). Johansen B.: Gillespie et al. 7933 (CAN). Kugaluk R.: Edlund 202 (CAN). Mt. Bumpus: Edlund 228, 259 (CAN). Mt. Lady Pelly [Amaaqtuq]: Hainault 1825, 1828 (DAO). Namaycush L.: Edlund & Roncato-Spencer 115 (CAN), Edlund 30 (CAN). Pt.Oterkvik : Gillespie et al. 7702, 7814 (CAN). Read I.: Oldenburg 42-503, 43-960 (CAN). “Trunsky L.”: Bennett et al. 14-0394 . Washburn L.: Oldenburg 46-2151 (CAN). Wollaston P.: D. Jenness 317b (CAN).Petasitesfrigidus (L.) Fr. subsp. frigidus, Figs Inl. and Ulukhaktok , 9610 . Kuujjua R.: Gillespie et al. 9752 . Inl. (head)Minto : Edlund 177, 179 (CAN). Ulukhaktok: Edlund 791 (CAN). NUNAVUT. Cambridge Bay: Sutton 1278 .Seneciolugens Richardson, Fig. Newly reported from Victoria I. Collected at “Long L.” in 1964. This is the only record of the taxon in the Canadian Arctic Archipelago. Elsewhere in the Canadian Arctic recorded from numerous western mainland sites as far east as the Coppermine R. valley, Nunavut .NUNAVUT. “Long L.”: Lambert s.n. (CAN)  Brouillet & Selliah  Á.Löve & D.Löve, A.sibiricusvar.pygmaeus (Lindl.) Cody, Eurybiapygmaeus (Lindl.) G.L.Nesom), Figs Inl., Byron B., C. Baring, Clouston B., Falaise B., Greiner L., Kuujjua R., the head of Minto Inl., Murray Pt., Oterkvik Pt., the head of Prince Albert S. and east of the head of Prince Albert S. along the Kagloryuak R. The Greiner L. collections marks the known eastern limit of the taxon in Canada. This species was assessed as May Be at Risk by the Inl. . C. Baring: Edlund 415 (CAN). Kuujjua R.: Edlund 632 (CAN), Gillespie et al. 9883 , 9968 . Inl. (head)Minto : Gillespie et al. 10242 . Prince Albert S. (head): Edlund 370 (CAN). NUNAVUT. Byron B.: Edlund & Argus 12846 . Falaise B.: Eriksen et al. 926 . Greiner L.: Ponomarenko VI-340 (CAN). Wollaston P.: D. Jenness 349a (CAN), Johansen & D. Jenness 349b (CAN). Clouston B.: Gillespie et al. 7737 . Johansen B.: Gillespie et al. 7992 , 7999 , 8007 , 8069 , 8099 . Pt.Murray : Gillespie et al. 8186 (CAN). Pt.Oterkvik : Gillespie et al. 7548 . Prince Albert S. (east of head): Edlund & Argus 12813 . Read I.: Oldenburg 44-1039 (CAN), Porsild 17214 (CAN), Ross 23 (ALTA).Taraxacum : Myers & Hainault 2125 (DAO). Johansen B.: Gillespie et al. 7977 , 8012 , 8040 (CAN), 8089 , 8153 . Pt.Murray : Gillespie et al. 8217 (CAN). Namaycush L.: Edlund & Roncato-Spencer 51 , Edlund 31 (CAN). Pt.Oterkvik : Gillespie et al. 7698 , 7699 (CAN).Taraxacumholmenianum Sahlin (T.pumilum Dahlst.), Fig. T.ceratophorum. Newly recorded from Clouston B., Falaise B., Ferguson L., Hadley B., Johansen B., Kuujjua R., the head of Minto Inl., Read I. and Sinclair Cr. Elsewhere in the Canadian Arctic recorded from Axel Heiberg, Baffin, Banks, Emerald, Ellesmere, King William, Melville, Prince of Wales, Prince Patrick and Somerset islands and a few northern mainland sites . Kuujjua R.: Gillespie et al. 9833 (CAN). Inl. (head)Minto : Gillespie et al. 10088 (CAN). Prince Albert S. (head): Porsild 17447 (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 13-0275 , 13-0236 (BABY), Calder et al. 24208 (DAO), Ponomarenko VI-074 (CAN). Clouston B.: Gillespie et al. 7753 . Falaise B.: Eriksen et al. 978 . Ferguson L. [Tahiryuaq]: Hainault & Hunter 1964 (DAO). Hadley B.: Edlund 331 (CAN). Johansen B.: Gillespie et al. 7873a, 8034, 8168 (CAN), 7998 . Mt. Bumpus: Edlund 263, 278 (CAN). Namaycush L.: Edlund & Roncato-Spencer 51 . Read I.: Oldenburg 43-1073 (CAN). Cr.Sinclair : Gillespie et al. 8282 .Taraxacumhyparcticum Dahlst., Figs T.phymatocarpum, based primarily on having involucres <15 mm (T.hyparcticum (T.phymatocarpum. The two species are difficult to distinguish in the herbarium using the key in T.hyparcticum than in T.phymatocarpum), which is rarely preserved in dried specimens. Our identifications of these two species are based primarily on horned calyculi and involucre length, described as being 15–30 mm in T.hyparcticum vs. 9–14 mm in T.phymatocarpum by Inl., Cambridge Bay, Johansen B., Kuujjua R., the head of Minto Inl., Oterkvik Pt., southeast of the head of Prince Albert S. and Ulukhaktok. Based on the maps in T.phymatocarpum.Specimens mapped from Cambridge Bay and Ulukhaktok by s <15 mm . Similararcticum , are plaInl.NORTHWEST TERRITORIES. Boot : Gillespie et al. 9595 (CAN), 9681 . Kuujjua R.: Gillespie et al. 9746 , 9925 (CAN). Inl. (head)Minto : Gillespie et al. 10025 , 10185 , 10188 , 10219 . Ulukhaktok: Oldenburg 45-1718, 45-1719 (CAN), Saarela & Bull 1440, 1441 (CAN). NUNAVUT. Cambridge Bay: Bennett et al. 13-0317 (UBC). Johansen B.: Gillespie et al. 7872 (CAN), 7873b , 8088 . Pt.Oterkvik : Gillespie et al. 7812 . Prince Albert S. (head): Edlund 82 (CAN).Taraxacumphymatocarpum J.Vahl, Figs Inl., Namaycush L., Read I., Richard Collinson Inl. and Ulukhaktok . C. Wollaston: Edlund 18 (CAN). Kuujjua R.: Gillespie et al. 9535, 9847 (CAN). Inl. (head)Minto : Edlund 85, 86 (CAN), Gillespie et al. 10021 , 10066 (CAN), 10076 , 10260 , Porsild 17428, 17429 (CAN). Prince Albert P.: Oldenburg 54-644 (UBC). Inl.Richard Collinson : Edlund 135 (CAN), 136 (CAN). Ulukhaktok: Edlund 428, 429, 722 (CAN), Gray & Gibbard 35, 45 (DAO), Porsild 17346 (CAN). Wollaston P.: Oldenburg 54-489 (UBC). NUNAVUT. Cambridge Bay: Gillespie et al. 8489 , Porsild 1104 (KSTC), Stephens 982 (KSTC), 992 (CAN), Zoltai s.n. (DAO). C. Colborne: Edlund & Argus 12735 (CAN). Mts.Colville : Gillespie et al. 7770 (CAN). Greiner L.: Ponomarenko VI-196, VI-208B (CAN). Hadley B.: Edlund 39, 61, 365 (CAN). Mt. Bumpus: Edlund 214 (CAN). Namaycush L.: Edlund & Argus 12801 (CAN). Pt.Oterkvik : Gillespie et al. 7654 (CAN). Prince Albert S. (head): Edlund 81, 152 (CAN), Edlund & Argus 12817 (CAN). Read I.: Porsild 17215 (CAN). Cr.Sinclair : Gillespie et al. 8340 (CAN). Unnamed lake ca. 60 mi. N of Cambridge Bay: Porsild 17478 (CAN). Wollaston P.: D. Jenness 415 (CAN).Taraxacumscopulorum (A.Gray) Rydb., Figs Mts., Kuujjua R., “Oldenburg L.” and Oterkvik Pt. Taxonomy follows Newly recorded for Victoria I., where known from Colville NORTHWEST TERRITORIES. Kuujjua R.: Gillespie et al. 9835 . “Oldenburg L.”: Oldenburg 45-1353 (CAN). Mts.NUNAVUT. Colville : Gillespie et al. 7767 (CAN). Pt.Oterkvik : Gillespie et al. 7630 .Tephroseris : Hainault 1967 (DAO), Jones 29 (DAO). Greiner L.: Ponomarenko VI-330 (CAN). Pt.Murray : Gillespie et al. 8195 . Read I.: Oldenburg 43-1070, 43-955 (CAN). Cr.Sinclair : Gillespie et al. 8335 . Wollaston P.: D. Jenness 414 (CAN).Tripleurospermummaritimum subsp. phaeocephalum (Rupr.) Hämet-Ahti (Matricariaambigua (Ledeb.) Krylov, M.maritimasubsp.phaeocephala (Rupr.) Rauschert), Figs Pt., Cambridge Bay, the head of Minto Inl. (Porsild obs.), the head of Prince Albert S. (Porsild obs.), Read I.  and Ulukhaktok (Previously recorded from Berkeley ukhaktok . Thannheukhaktok .Pt.NORTHWEST TERRITORIES. Berkeley : Stretton 91 (DAO). Kuujjua R.: Gillespie et al. 9918 . Ulukhaktok: Edlund 314 (CAN), Gray & Gibbard 21 (DAO), Oldenburg 45-1717 (CAN), Saarela & Bull 1426 , Salokangas 24 . NUNAVUT. Cambridge Bay: Bennett 13-0267 , 13-0262 , Gillespie et al. 8462 (CAN), Saarela & Teeter 5283 (CAN), Stephens (KSTC), Stephens 1263 (CAN). C. Colborne: Edlund & Argus 12736 (CAN). Ferguson L. [Tahiryuaq]: Hainault 1968 (DAO). Johansen B.: Gillespie et al. 8004 . Pt.Murray : Gillespie et al. 8215 . Pt.Oterkvik : Gillespie et al. 7627 . Read I.: Oldenburg 42-478, 43-1063, 43-959 (CAN). Cr.Sinclair : Gillespie et al. 8258 .Eremogonecapillaris (Poir.) Fenzl var. capillaris (Arenariacapillaris Poir.)–Carexholostoma Drejer–Edlund & Argus 12805 (CAN), was previously misidentified as Carexnorvegica Retz. and C.holostoma, and has been re-identified as Carexbigelowiisubsp.lugens.Carexlachenalii Schkuhr–A record mapped by Edlund 338) has been redetermined as C.simpliciusculasubsp.subholarctica, and a collection from Cambridge Bay (Porsild 17464) reported by C.glareosa. Given these new determinations, this species is now known in the Canadian Arctic Archipelago only from Baffin, Coats and Southampton islands  annotated by G.A. Mulligan. We were unable to locate the two specimens at CAN, and exclude the species from the flora pending verification.Hippurisvulgaris L.–Previous records of this species from Victoria I. have been redetermined as H.lanceloata; see comments under that taxon.Poaalpina L.–Mapped from southeastern Victoria I. in Salixcordifolia var. callicarpaea (Trautv.) Fernald  Dorn)–Reported from the head of Minto Inl. by Salixfuscescens Andersson–See comments under S.planifolia.Solidagomultiradiata Aiton–Mapped in