4,295 articles
Culcita macrocarpa
Culcita macrocarpa, the woolly tree fern (helecho de colchoneros), is a relict Iberian-Macaronesian fern of Cyatheales with creeping rhizome, fronds over 2 m, IUCN Near Threatened status, and protection under the Habitats Directive.
Cullen
Cullen Medik. is a genus of about 32-35 legume species (Fabaceae, tribe Psoraleeae), segregate of Psoralea, native from the Old World tropics to Australia, containing furanocoumarins and evaluated as dryland pasture.
Cultivar
Cultivar: an assemblage of cultivated plants selected for distinct, uniform, stable characters that persist when propagated, named under the ICNCP and protectable via plant patents, PVP certificates, or plant breeders' rights.
Cultivation and use of wood, shield and lady ferns
Cultivation and use of wood, shield, and lady ferns covers growing shade-garden Dryopteris and Athyrium ferns, notable cultivars like the Japanese painted fern, and male fern's historical use as a tapeworm remedy.
Cultivation and uses of maidenhairs and brakes
Cultivation and uses of maidenhairs and brakes describes growing Adiantum and Pteris ferns indoors and out, using Pteris vittata to extract arsenic from soil, and herbal uses.
Cultivation and uses of polypody ferns
The cultivation and uses of polypody ferns cover growing Polypodiaceae ferns such as mounted staghorn ferns, licorice fern, and resurrection ferns, and their traditional medicinal uses.
Cumin
Cumin (Cuminum cyminum L.), also called jeera or kammūn, is an annual Apiaceae herb from Iraq to Afghanistan grown for aromatic seeds used since antiquity; India dominates exports, and meta-analyses report modest cholesterol-lowering effects.
Cuminum
Cuminum is a small Apiaceae genus of annual herbs from the Mediterranean to southwest Asia; its type species Cuminum cyminum (cumin) yields the spice seed, native Iraq to Afghanistan, cultivated widely.
Cunninghamia
Cunninghamia (Chinese fir, 杉木属) is a genus of two East Asian conifer species in Cupressaceae, sister to all other living members, a Jurassic lineage, and a major Chinese timber tree.
Cunninghamia lanceolata
Cunninghamia lanceolata (杉木), Chinese fir or China fir, a Cupressaceae conifer native to southern China, cultivated over 1,000 years; plantations cover about 10 million hectares and supply 20-30% of Chinese timber.
Cunoniaceae
Cunoniaceae R.Br. (1814, nom. cons.) is a family of Oxalidales trees and shrubs with 27 genera and about 335 species, centered in eastern Australia and New Caledonia; largest genus Weinmannia.
Cuphea
Cuphea (waxweed), Lythraceae genus of about 250-260 American species; largest genus in its family; seed oils rich in medium-chain fatty acids; includes ornamentals like C. ignea and oilseed cultivar PSR23.
Cupressaceae
Cupressaceae, the cypress family (formerly including Taxodiaceae), is a conifer family of about 30 genera and 140 species on all continents except Antarctica, including redwoods, junipers, cypresses, and arborvitae, with fused bract-scale cones bearing 1-20 ovules.
Cupressus
Cupressus, the true cypresses, is a Linnaean 1753 genus of evergreen Cupressaceae trees, now restricted to Old World species after the New World species moved to Hesperocyparis; 16 accepted species, Mediterranean to Himalaya.
Cupressus abramsiana
Cupressus abramsiana, also placed as Hesperocyparis abramsiana and called the Santa Cruz cypress, is a small endangered cypress tree endemic to California's Santa Cruz Mountains, where five populations survive.
Cupressus arizonica
Cupressus arizonica (Arizona cypress, Hesperocyparis arizonica) is a southwestern US and Mexican conifer with scalelike leaves and serotinous cones opened by fire, reproducing only from seed on bare mineral soil.
Cupressus macrocarpa
Cupressus macrocarpa, Monterey cypress, now Hesperocyparis macrocarpa, is a 25 m California cypress native only to two groves near Carmel, widely planted worldwide and CNPS-listed as rare.
Cupressus sempervirens
Cupressus sempervirens, the Mediterranean or Italian cypress, is an eastern Mediterranean evergreen conifer with columnar form, durable wood, winter-allergenic pollen, and newly bred low-pollen clones.
Cupressus stephensonii
Cupressus stephensonii, the Cuyamaca cypress (Hesperocyparis stephensonii), a rare cypress endemic to the Cuyamaca Mountains, San Diego County, California; cherry-red exfoliating bark, glaucous lemon-scented foliage, serotinous cones, NatureServe rank GX.
Curcuma
Curcuma is a genus of about 120 to 177 species of rhizomatous herbs in the ginger family, native to Southeast Asia and best known for turmeric.
Curio
Curio P.V.Heath is a genus of southern African succulent daisies (Asteraceae, Senecioneae) established in 1997 from Senecio, with 17 accepted species including string of pearls, Curio rowleyanus.
Curio rowleyanus
Curio rowleyanus (formerly Senecio rowleyanus), string of pearls or string of beads, is a South African trailing succulent in Asteraceae with spherical 5-8 mm windowed leaves, grown worldwide as a houseplant and mildly toxic if ingested.
Curry tree
Curry tree, Bergera koenigii (formerly Murraya koenigii), a small aromatic Rutaceae tree native to the Indian subcontinent to southern China; its pungent leaves are a South Indian cooking staple, with carbazole alkaloids and curry leaf oil.
Cuscuta
Cuscuta (dodder), genus of about 200-210 parasitic herbs in Convolvulaceae; obligate stem holoparasites lacking chlorophyll and roots, attaching via haustoria to host xylem and phloem; major agricultural weeds with broad, habitat-dependent host ranges.
Cyamopsis
Cyamopsis is a genus of four annual herbaceous Fabaceae legumes native to Africa, Arabia, and the Indian Subcontinent; its cultivated species guar (C. tetragonoloba, cluster bean) yields guar gum, a galactomannan thickener (INS 412) used in food and oil drilling, with India producing about 80% of the crop.
Cyanea
Cyanea Gaudich. is a genus of about 80 Hawaiian lobeliad trees and shrubs in Campanulaceae, all endemic to Hawai'i, arising from one colonization about 13 million years ago, pollinated by honeycreepers, with many species critically endangered.
Cyathea
Cyathea is a genus of scaly tree ferns (Cyatheaceae) with marginate petiole scales lacking apical setae; about 115-190 species, mostly Neotropical, including the former genera Cnemidaria, Trichipteris, and Hymenophyllopsis.
Cyathea arborea
Cyathea arborea, the West Indian tree fern, is a palmlike tree fern native to the Caribbean and to Colombia, Ecuador, and Venezuela, growing up to 12 meters tall.
Cyathea delgadii
Cyathea delgadii, also known as Cyathea schanschin, is a scaly tree fern in the family Cyatheaceae, native to a range from Nicaragua to southern tropical America and first published in 1820.
Cyathea in cultivation
Cyathea in cultivation covers how Cyathea tree ferns are grown in temperate gardens and glasshouses, including cold tolerance, watering and winter protection, spore-only propagation, and CITES-regulated trade.