caryophylloid dicot family - family of relatively early dicotyledonous plants including mostly flowers

Opuntiales, order Opuntiales - coextensive with the family Cactaceae: cactuses

cactus - any spiny succulent plant of the family Cactaceae native chiefly to arid regions of the New World

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