Aztekium

Aztekium
Aztekium ritteri
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Embryophytes
Clade: Tracheophytes
Clade: Spermatophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Tribe: Cacteae
Genus: Aztekium
Boed.[1]
Species

The genus Aztekium contains two species of small globular cactus. Discovered in 1929 by F. Ritter, in Rayones, Nuevo León, Mexico, this genus was thought to be monotypic (with Aztekium ritteri) until a second species (Aztekium hintonii) was discovered by George S. Hinton, in Galeana, Nuevo León in 1991. A further possible species, Aztekium valdezii, was described in 2011, but is considered to be a synonym of A. ritteri.[3]

Description

Aztekium ritteri is a plant that is around 20 mm wide, with 9 to 11 ribs, which typically have transverse wrinkles. Its color varies from pale green to grayish-green. The center of the cactus contains white wool. Flowers are less than 10 mm wide, with white petals and pinkish sepals. The plants bear pinkish berry-like fruit. A. hintonii is larger, to 10 cm in diameter, 10 to 18 grooved ribs, flowers magenta to 3 cm. It grows only on gypsum.

Species

Image Scientific name Distribution
Aztekium hintonii Nuevo León, Tamaulipas
Aztekium ritteri Northeast Mexico

Etymology

Its name is dedicated to the Aztec people, due to the resemblance between the plant's shape and certain Aztec sculptures.[citation needed]

Distribution

This genus is found only in the states of Nuevo León and Tamaulipas in Mexico. It was estimated[by whom?] that there were in the order of tens of millions of plants of A. hintonii, and at present most of its range is pristine.[citation needed] Though A. ritteri has been collected for decades and there has been destruction of its habitat, the number of plants in habitat is several million.[citation needed]

Cultivation

These species grow extremely slowly, taking around two years to attain a diameter of 3 mm. They are usually propagated by seeds.[citation needed]

Phytochemistry

The plants contain the following compounds[citation needed]:

References

  1. ^ "Genus: Aztekium Boed". Germplasm Resources Information Network. United States Department of Agriculture. 2012-04-16. Retrieved 2012-07-31.
  2. ^ "GRIN Species Records of Aztekium". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2012-07-31.
  3. ^ "Aztekium valdezii Velazco, M.A.Alvarado & S.Arias". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2019-08-01.

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