family Cactaceae
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| Noun | 1. |  family Cactaceae - constituting the order Opuntiales caryophylloid dicot family - family of relatively early dicotyledonous plants including mostly flowers Opuntiales, order Opuntiales - coextensive with the family Cactaceae: cactuses cactus - any succulent plant of the family Cactaceae native chiefly to arid regions of the New World and usually having spines Acanthocereus, genus Acanthocereus - mostly trailing cacti having nocturnal white flowers; tropical America and Caribbean region Aporocactus, genus Aporocactus - small genus of epiphytic cacti of Mexico Ariocarpus, genus Ariocarpus - slow-growing geophytic cacti; northern and eastern Mexico; southern Texas Carnegiea, genus Carnegiea - caryophylloid dicot genus with only one species: saguaro Cereus, genus Cereus - genus of much-branched treelike or shrubby cacti with pronounced ribs and rounded needlelike spines and nocturnal flowers usually white genus Coryphantha - mainly globose cacti of southwestern United States and Mexico covered with many nodules; superficially resembling and formerly included in genus Mammillaria genus Echinocactus - globular or cylindrical cacti; southwestern United States to Brazil Echinocereus, genus Echinocereus - large genus of low-growing shrubby ribbed cacti of Mexico and southwestern United States genus Epiphyllum - small genus of tropical American (mainly Central America) cacti Ferocactus, genus Ferocactus - genus of nearly globular cacti of Mexico and southwestern United States: barrel cacti genus Gymnocalycium, Gymnocalycium - large genus of low-growing globular South American cacti with spiny ribs covered with many tubercles genus Harrisia, Harrisia - genus of slender often treelike spiny cacti with solitary showy nocturnal white or pink flowers; Florida and Caribbean to South America genus Hatiora, Hatiora - small genus of South American epiphytic or lithophytic cacti genus Hylocereus, Hylocereus - genus of climbing or epiphytic tropical American cacti with angular stems and mostly white very fragrant flowers genus Lemaireocereus, Lemaireocereus - tropical American cacti usually tall and branching with stout spines and funnel-shaped flowers and globular or ovoid often edible fruit genus Lophophora, Lophophora - two species of small cacti of northeastern Mexico and southwestern United States having rounded stems covered with jointed tubercles: mescal genus Mammillaria - large genus of cacti characterized chiefly by nipple-shaped protuberances or tubercles on their surface genus Melocactus, Melocactus - genus of strongly ribbed globose or spheroid cacti of tropical South and Central America and the Caribbean genus Myrtillocactus, Myrtillocactus - small genus of arborescent cacti of Mexico and Central America genus Pediocactus, Pediocactus - low-growing cacti of the Great Plains of North America genus Nopalea, Nopalea - a genus of the cactus family with scarlet flowers genus Opuntia, Opuntia - large genus of cactuses native to America: prickly pears genus Peireskia, genus Pereskia, Peireskia, Pereskia - genus of tropical American shrubby trees and woody climbers having slender branches with broad flat leaves and large panicles of flowers genus Rhipsalis, Rhipsalis - large genus of epiphytic or lithophytic unarmed cacti with usually segmented stems and pendulous branches; flowers are small followed by berrylike fruits genus Schlumbergera, Schlumbergera - South American epiphytic or lithophytic cacti genus Selenicereus, Selenicereus - mostly epiphytic climbing cacti that bloom at night genus Zygocactus, Zygocactus - small genus of Brazilian cacti having flat fleshy usually branched joints and showy red or pink flowers followed by red fleshy fruits |
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