Family Cactaceae
A cactus is a member of the plant family Cactaceae.Genera in the family Cactaceae of plants
Acharagma - These cacti are usually solitary but sometimes occur in small clusters.
Ariocarpus - Ariocarpus is a genus of 8 species of succulent, subtropical plants of the Cactaceae family.
Arrojadoa - The species often have frail stalks that can be upright or procumbent, reaching 2 m high and about 2 to 5 cm thick.
Arthrocereus - Arthrocereus is a genus of cactus, originating from southern Minas Gerais .
Astrophytum - Astrophytum is a genus of six species of cacti.
Aztekium - This genus is found only in Mexico and is native to the state of Nuevo León.
Brachycereus - The lava cactus is a species of cactus and the sole species of the genus Brachycereus.
Brasilicereus - Brasilicereus is a genus of cacti known only from Brazil and comprising 2 species.
Brasiliopuntia - Brasiliopuntia is a genus in the cactus family Cactaceae.
Cereus - Mirabella F. Piptanthocereus Riccob. Subpilocereus Backeb.
Cipocereus - Cipocereus is a genus of cacti from Brazil.
Coleocephalocereus - Coleocephalocereus is a genus of erect and semi-erect columnar cacti from Brazil.
Coryphantha - There are four characteristics that distinguish Coryphantha from other cacti.
Cumarinia - There are four characteristics that distinguish Coryphantha from other cacti.
Discocactus - Discocactus is a genus of tropical cactus.
Echinocactus - Brittonrosea Speg. Echinofossulocactus Lawr. Homalocephala Britton & Rose
Echinocereus - Morangaya G. Wilcoxia Britton & Rose
Epiphyllum - Phyllocactus Link Phyllocereus Miq.
Epithelantha - The succulents in this group are slow growing, dwarf cacti.
Espostoopsis - Espostoopsis dybowskii is a species of cacti and the sole species of its genus .
Facheiroa - Facheiroa is a genus of cacti, comprising 8 species in 2 subgenera .
Ferocactus - Bisnaga Orcutt Brittonia C.
Hylocereus - Hylocereus is a genus of cacti, often referred to as nightblooming cactus .
Jasminocereus - Jasminocereus is a genus of cacti.
Lepismium - Lepismium is a genus of mostly epiphytic cacti, with a dozen species.
Leptocereus - Leptocereus is a genus of cacti.
Leuchtenbergia - It is very slow-growing but can eventually grow up to 70 cm high, with a cylindrical stem which becomes bare and corky at the base with age.
Lophophora - Lophophora is a genus of spineless, button-like cacti native to the southwestern United States through Northeast Mexico and South to Querétaro in central Mexico.
Mammillaria - The genus Mammillaria is one of the largest in the cactus family , with currently 171 known species and varieties recognized.
Melocactus - Melocactus is a genus of cactus with about 40 species.
Micranthocereus - Micranthocereus is genus of cactus.
Obregonia - Obregonia, the artichoke cactus, is a genus of cacti with a single species, Obregonia denegrii.
Opuntia - and see text
Pelecyphora - Pelecyphora is known for its medicinal properties and may have been utilized as a psychoactive in the same way as Lophophora williamsii.
Pereskia - Pereskia is a genus of about 25 tropical species and varieties of cacti that do not look much like other types of cacti, having substantial leaves and thin stems.
Pierrebraunia - Pierrebraunia bahiensis Pierrebraunia brauniorum etc.
Pilosocereus - Pilocereus K. Pseudopilocereus Buxb.
Pseudoacanthocereus - Pseudoacanthocereus brasiliensis Pseudoacanthocereus sicariguensis etc.
Quiabentia - Quiabentia is a genus of cacti, closely related to Pereskiopsis.
Rhipsalis - Cassytha Mill.
Schlumbergera - They are tropical rainforest epiphytes, growing on tree branches where, despite the high rainfall, water drains off quickly so that "dry" conditions prevail much of the time.
Stenocactus - Stenocactus is a genus of cacti.
Tacinga - Tacinga is a genus in the cactus family Cactaceae, native to northeast Brazil .
Tephrocactus - Tephrocactus articulatus
Thelocactus - Hamatocactus Britton & Rose Thelomastus Fric
Turbinicarpus - Turbinicarpus is a genus of very small to medium-sized cacti, which inhabit the north-eastern regions of Mexico, in particular the states of San Luis Potosí, Guanajuato, Nuevo León, Querétaro, Hidalgo, Coahuila, Tamaulipas and Zacatecas.
Uebelmannia - Uebelmannia is genus of cactus.