4,295 articles
Corydalis
Corydalis DC. (fumewort genus), a Papaveraceae/Fumarioideae genus of about 549 species native to the temperate Northern Hemisphere, defined by spurred four-petaled flowers, six stamens in two bundles, and isoquinoline-alkaloid-rich medicinal roots.
Corylus
Corylus is a genus of trees and shrubs in the birch family, native to the temperate Northern Hemisphere, whose species produce the edible nuts known as hazelnuts.
Corymbia
Corymbia, the bloodwood eucalypts, a genus of about 95 Australian and New Guinean Myrtaceae trees split from Eucalyptus in 1995; includes spotted gums and ghost gums; non-monophyletic, with Blakella proposed as a separate genus in 2024.
Corymbia citriodora
Corymbia citriodora, the lemon-scented gum (formerly Eucalyptus citriodora), is an Australian Myrtaceae tree from Queensland to NE New South Wales, grown for citronellal-rich essential oil, heavy-construction timber, and ornamental planting.
Cosmic Crisp
Cosmic Crisp, also known as WA 38, is a large, dark-red apple cultivar bred by Washington State University from a 1997 Enterprise-Honeycrisp cross and launched commercially in December 2019.
Costus
Costus L. (spiral gingers, Costaceae, Zingiberales): pantropical genus of 115 accepted rhizomatous herbs with spiromonostichous spiral leaves, cone-like inflorescences, and hummingbird and bee pollination syndromes; distinct from the medicinal costus root Saussurea costus.
Cota
Cota J.Gay is a genus of 37 daisy-family (Asteraceae, Anthemideae) herbs native to Eurasia, northwest Africa, and Alaska to Canada; formerly a section of Anthemis, recognized as an independent genus on molecular evidence in 2010, with type species Cota tinctoria, golden chamomile.
Cotinus
Cotinus (smoketree, smoke bush) is a genus of seven accepted deciduous shrubs and small trees in Anacardiaceae, native from southern Central Europe to China and the southeastern USA to NE Mexico; C. coggygria is the widespread ornamental species.
Cotoneaster
Cotoneaster, a Rosaceae genus of berry-bearing shrubs native to temperate Eurasia and North Africa, with 270 to 400 species, apomictic polyploid taxonomy, and several invasive ornamental species.
Cotton
Cotton (Gossypium spp.), also called upland cotton (Gossypium hirsutum) or Pima (G. barbadense), is the world's dominant natural textile fiber, a nearly pure cellulose single-celled seed trichome; domesticated millennia ago and grown mainly in China, India, Brazil, and the United States.
Cotton Candy grapes
Cotton Candy grapes (IFG Seven) are a patented seedless table grape bred by David Cain at International Fruit Genetics from a University of Arkansas Concord selection, with 19 g sugar per 100 g and licensed only to commercial growers.
Cotula
Cotula (button daisies, brassbuttons) is a genus of about 51 Asteraceae herbs in tribe Anthemideae, native from Africa to Australasia, with small disciform button-like flower heads; distinct from Anthemis cotula, stinking chamomile.
Cotula coronopifolia
Cotula coronopifolia (brass buttons, buttonweed) is a southern African Asteraceae wetland herb, invasive in Europe, North America, and Australasia; it is halotolerant, spreads via waterbird gut passage, and was first recorded wild in Britain in 1869.
Couma
Couma is a genus of five species of latex-yielding trees in the dogbane family, native to Central and South America and harvested in the Amazon for its sweet latex, sorva.
County and regional bryophyte floras of the British Isles
County and regional bryophyte floras of the British Isles: published accounts of mosses, liverworts and hornworts by Watsonian vice-county, from 19th-century single-author floras to modern tetrad atlases under the British Bryological Society's Census Catalogue system.
Couroupita guianensis
Couroupita guianensis, the cannonball tree, is a Lecythidaceae tree native from Panama to tropical South America, grown widely as an ornamental. Cauliflorous fragrant flowers, 20 cm cannonball-like fruits with up to 300 seeds, IUCN Least Concern.
Cowpea
Cowpea (Vigna unguiculata, black-eyed pea) is an African legume domesticated in West Africa 5,000-6,000 years ago, grown on about 12 million hectares for seed protein, fodder, and soil-improving nitrogen fixation.
Cox's Orange Pippin
Cox's Orange Pippin, also called Cox Orange, is an English dessert apple cultivar raised about 1825 by Richard Cox at Colnbrook, Buckinghamshire, from Ribston Pippin seed; rich aromatic flavor, pollination group 3, parent of many cultivars.
Crambe
Crambe L. is a Brassicaceae genus of about 30-37 herb species from Europe, Macaronesia, and Asia, whose type species is sea kale; C. abyssinica is an industrial oilseed crop rich in erucic acid.
Cranberry
Cranberry (Vaccinium macrocarpon, American or large cranberry) is a North American bog-grown Ericaceae fruit crop first cultivated around 1810 in Massachusetts, used in sauces and supplements, and shown to modestly reduce recurrent UTI risk in women.
Cranfillia
Cranfillia is a genus of Blechnaceae ferns established by Gasper & Dittrich in Phytotaxa 275 (2016), type species Cranfillia fluviatilis, segregating former Blechnum species in New Zealand, Brazil, and New Caledonia.
Cranfillia fluviatilis
Cranfillia fluviatilis, also Blechnum fluviatile, creek fern or kiwakiwa, is a dimorphic streamside fern of Blechnaceae native to New Zealand, Australia, and Malesia, not threatened, with diploid and tetraploid populations.
Crassula
Crassula is a cosmopolitan genus of about 200-220 succulent Crassulaceae species, mostly southern African, with opposite leaves, single-whorl stamens, origin in the Greater Cape Floristic Region about 46 Mya, and the jade plant C. ovata.
Crassula muscosa
Crassula muscosa (watch chain, rattail crassula, princess pine) is a South African and Namibian Crassulaceae succulent subshrub with four-ranked scale-like leaves on wiry stems, described by Linnaeus in 1760, Least Concern, widely cultivated.
Crassula ovata
Crassula ovata, the jade plant (also money plant, lucky plant; Japanese kanenonaruki カネノナルキ), is a succulent Crassulaceae shrub native from SE Mozambique to South Africa's Cape, widely grown as a houseplant; synonym Crassula argentea, Least Concern.
Crassulaceae
Crassulaceae, the stonecrop family, is a Saxifragales family of about 1,400-1,500 succulent species in three subfamilies, including Sedum, Echeveria, Kalanchoe, and Sempervivum, and gave its name to CAM photosynthesis.
Crassulacean acid metabolism
Crassulacean acid metabolism (CAM) is a water-saving photosynthetic variant, also called CAM photosynthesis, in which stomata open at night, CO2 is stored as malic acid, and Rubisco refixes it by day; it evolved independently at least 35 times.
Crataegus
Crataegus (hawthorn) is a Rosaceae genus of thorny shrubs and small trees of temperate Eurasia and North America, with roughly 150–260 species, complicated by hybridization, polyploidy, and apomixis.
Crataegus monogyna
Crataegus monogyna, common or single-seed hawthorn (aubepine), a thorny Rosaceae tree native from Europe to Iraq and North Africa, widely naturalized and invasive in North America and Australia, used medicinally.
Cream of Wheat
Cream of Wheat is an American brand of farina, a smooth hot breakfast cereal created in 1893 at a flour mill in Grand Forks, North Dakota, and now owned by B&G Foods.