Monotypic Cactaceae genera

Blossfeldia is a genus of cacti (family Cactaceae) containing only one species, Blossfeldia liliputana, native to South America in northwestern Argentina (Jujuy, Salta, Tucumán, Catamarca and Mendoza Provinces) and southern Bolivia (Santa Cruz and Potosí Departments). It grows at 1,200–3,500 m altitude in the Andes, typically growing in rock crevices, and often close to waterfalls. ==Description== It is the smallest cactus species in the world, with a mature size around 10–12 mm diameter, solitary or with many dark-green stems forming colonies in the fissures of the rocks; it does no

Setiechinopsis is a monotypic genus of cacti. Its only species, Setiechinopsis mirabilis, is native to Argentina.

Obregonia, the artichoke cactus, is a monotypic genus of cacti, containing the species Obregonia denegrii. The species is endemic to the state of Tamaulipas in Mexico.

Bergerocactus emoryi is a species of cactus, known commonly as the golden-spined cereus, golden snake cactus, velvet cactus or golden club cactus. It is a relatively small cactus, but it can form dense thickets or colonies, with the dense yellow spines giving off a velvety appearance when backlit by the sun. From April to May, yellow, green-tinged flowers emerge, which transform into reddish, globular fruit. This species is native to the California Floristic Province, and is found in northwestern Baja California and a small part of California, in San Diego County and on the southern Channel Is

Jasminocereus (meaning "jasmine-like cereus", referring to the flowers) is a genus of cacti with only one species, Jasminocereus thouarsii, endemic to the Galápagos Islands, territorially a part of Ecuador. In English it is often called the candelabra cactus (a name used for other cacti with a similar appearance). At maturity it has a branched, treelike habit, and may be up to tall. The stems are made up of individual sections with constrictions between them. Its creamy white to greenish flowers open at night and are followed by greenish to reddish fruits.

Micropuntia is a monotypic genus of cactus. Its only species is Micropuntia pulchella, synonym Grusonia pulchella. The species is also known as sagebrush cholla. It is a tuberous species of opuntioid cactus from the Great Basin Desert of central Nevada, eastern California and western Utah in the United States.

Escontria is a genus of cactus. The only species is Escontria chiotilla, the chiotilla or jiotilla.

Kimnachia is a monotypic genus of cacti. Its only species is Kimnachia ramulosa, synonym Pseudorhipsalis ramulosa, which is native from southern Mexico to northern South America and also found in Jamaica.

Yavia cryptocarpa is a species of cactus (family Cactaceae) and the only species of the newly discovered genus Yavia. The genus is named after Argentina's department Yavi, Jujuy Province, where the plant is endemic to sparsely vegetated rocky slopes. The plant is also sometimes put in the tribe Notocacteae. The specific epithet cryptocarpa refers to the plant being a cryptocarp. This means that the fruits are formed inside the plant's body, thus being only visible when the plant shrinks in the drought period. ==Description== The species, with very tuberous roots, has a subglobular stem, has a

Leuchtenbergia is a genus of cactus which has only one species, Leuchtenbergia principis (agave cactus or prism cactus). It is native to north-central Mexico (San Luis Potosi, Chihuahua). The genus is named after Maximilian Eugen Joseph (1817–1852), Duke of Leuchtenberg and amateur botanist.

Leocereus is a genus of cactus, containing a single species, Leocereus bahiensis, which was described by Nathaniel Lord Britton and Joseph Nelson Rose in 1926.

Geohintonia mexicana (discovered in 1992) is a species of cacti, the only species in the genus Geohintonia. This genus is named after its discoverer George S. Hinton. As its specific epithet suggests, the plant is found in Mexico (Nuevo León), where it grows on gypsum hills near Galeana.

Espostoopsis is a monotypic genus of cactus containing the single species Espostoopsis dybowskii. The generic name is formed from Greek opsis meaning "view", referring to its resemblance to the genus Espostoa, with which it is often confused. The plant is only known from northern Bahia, Brazil.

Calymmanthium is a monotypic genus of primitive tree-like cacti from northern Peru. The only species is Calymmanthium substerile (also known as C. fertile). It belongs to the tribe Lymanbensonieae. The young flowers of Calymmanthium are completely encased within the plant's pedicel until it is fully developed, at which time the growing yellow flower swells until it cracks the pedicel open, allowing pollinators access. The plant has an upright trunk, but many of the branches sprawl on the ground.

Yungasocereus is a monotypic genus of cactus containing one species, Yungasocereus inquisivensis.

Brasiliopuntia is a genus in the cactus family, Cactaceae. It contains only one species, Brasiliopuntia brasiliensis.

Miqueliopuntia is a monotypic genus of cactus in the Cactaceae family, containing a single species, Miqueliopuntia miquelii , which is native to the Chilean coasts of South America.

REDIRECT Lava cactus

Rauhocereus is a monotypic genus of cacti (family Cactaceae). Its only species is Rauhocereus riosaniensis, which has nocturnal flowers. It is known from northern Peru (Rio Santa, Rio Zana, Chamaya and Jaén).