sentence: food and cooking fruit trees pomes apple asian pear loquat ( japanese medlar ) common medlar pear quince citrus fruits citron grapefruit lemon lime orange pomelo nut trees almond cashew chestnut hazelnut macadamia pecan pistachio walnut other 103 + domesticated plant species in the amazon , including sapodilla , calabash , tucuma , babacu , acai , wild pineapple , cocopalm , american-oil palm , panama-hat palm , peach palm ( bactris gasipaes ) , ice-cream bean , banana breadfruit durian ensete fig jackfruit papaya passionfruit cereal ( or grains , also called '' corn plants '' in the uk ) barley finger millet fonio foxtail millet little barley ( hordeum pusillum , central us pre-columbian ) maize ( called corn in the u.s. ) .