Mammillaria is one of the largest genera in the cactus family (Cactaceae), with currently 200 known species and varieties recognized. Most of the mammillarias are native to Mexico, but some come from the southwest United States, the Caribbean, Colombia, Venezuela, Guatemala and Honduras. The common name "pincushion cactus" refers to this and the closely related genus Escobaria.
Astrophytum capricorne, the goat's horn cactus, is a species of flowering plant in the cactus family Cactaceae, that is native to the Coahuila regions of Northern Mexico. Growing to 25 centimetres (9.8 in) tall by 10 centimetres (3.9 in) wide in a ball or oval shape, it is grey-green in colour with 7 to 9 prominent ribs, very long twisted spines and yellow flowers with a red centre in summer.
Ariocarpus scaphirostris is a species of plant in the family Cactaceae. The Ariocarpus scaphirostris was originally called Ariocarpus scapharostrus in the 1930. D. R. Hunt, however, changed it to Ariocarpus scaphirostris.
Mammillaria albiflora is a species of plant in the family Cactaceae. It is endemic to Guanajuato state in central Mexico. Its natural habitat is hot deserts. It is a Critically endangered species, threatened by habitat loss.
Mammillaria anniana is a species of plant in the family Cactaceae. It is endemic to Tamaulipas state of northeastern Mexico. Its natural habitat is hot deserts. It is a Critically endangered species, threatened by habitat loss.
Mammillaria brachytrichion is a species of plant in the family Cactaceae. It is endemic to Mexico.
Mammillaria gasseriana is a species of plant in the family Cactaceae. It is endemic to Mexico. Its natural habitat is hot deserts.
Mammillaria glochidiata is a species of plant in the family Cactaceae. It is endemic to Mexico. Its natural habitat is hot deserts. It was classed as Extinct in the wild but since 2013, it has been classed as Critically Endangered by the IUCN Red List.
Mammillaria guelzowiana is a species of plant in the family Cactaceae. The species epithet guelzowiana honors the German cactus collector Robert Gülzow of Berlín.
Mammillaria guillauminiana is a species of plant in the family Cactaceae.
Mammillaria marcosii is a species of plant in the family Cactaceae. It is endemic to Mexico. Its natural habitat is hot deserts.
Mammillaria mathildae is a species of plant in the family Cactaceae. It is endemic to Querétaro, México. Its natural habitat is hot deserts. It is of IUCN Red List Vulnerable status and threatened by habitat loss.
Mammillaria sanchez-mejoradae is a species of plant in the family Cactaceae. It is endemic to Nuevo León state of northeastern Mexico. Its natural habitat is hot deserts. It is a Critically endangered species, threatened by habitat loss.
Mammillaria schwarzii is a species of plant in the family Cactaceae. It is endemic to Guanajuato state in Mexico. Its natural habitat is hot deserts.
Mammillaria weingartiana is a species of plant in the family Cactaceae. It is endemic to Nuevo León state, Mexico.
Mammillaria zeilmanniana is a species of cactus. It is endemic to Mexico, where it is known only from Guanajuato. It grows in a narrow canyon usually near water where there is high humidity, its total population is fewer than 250 individuals. It is threatened by illegal collection for the horticultural trade. Recent studies link this species to Mammillaria crinita
Mammillaria spinosissima, also known as the spiny pincushion cactus, is a species of flowering plant in the cactus family Cactaceae, endemic to the central Mexican states of Guerrero and Morelos, where they grow at elevations of approximately 1,600 to 1,900 metres. The species was described in 1838 by James Forbes, gardener of the Duke of Bedford. Botanist David Hunt collected a specimen in 1971, when he located one near Sierra de Tepoztlan, Mexico.
Mammillaria magnimamma, common name Mexican pincushion, is a species of flowering plant in the cactus family Cactaceae.
Mammillaria glassii is a species of cactus in the subfamily Cactoideae. It is a small, clumping cactus with "fluffy white spines." M. glassii is native to Mexico in the states of Coahuila and Nuevo León.
Mammillaria fraileana is one of about 200 species of the genus Mammillaria from the cactus family Cactaceae. This species is native to Mexico and can be found along the east coast of the southern part of Baja California Peninsula in Desert Scrub communities. They tend to grow in non calcareous dry granite-based soil but can also grow in rocky habitats, either in rock fissures or directly on top of the rock surface even without the presence of soil. Thus, the mineral composition of the rocks in their habitat directly influence their abundance. The habitat of Mammillaria fraileana is home to succulent flora and is particularly rich in local endemics. Currently, no major threats to the species are known to exist.
