암모란선인장-Ariocarpus retusus Scheidw.

과명	Cactaceae (선인장과)	속명	Ariocarpus (아리오카르푸스속)
전체학명	[정명] Ariocarpus retusus Scheidw.	추천명	암모란선인장
이명	암목단선인장	외국명	cobbler's thumb; seven stars; star rock

2018-12-17

추천명 변경, 암목단선인장-> 암모란선인장

Origin and Habitat: Ariocarpus retusus is widely distributed from north of Saltillo, Coahuila southwards to San Luis Potosi. Also found occur in Tamaulipas and Zacatecas.
Altitude range: High Chihuahuan desert at altitudes of between 1300 and 2000 metres above sea level. This species grows at lower altitudes (around 200 - 800 metres) of the Sierra Madre Oriental it is replaced by Ariocarpus retusus ssp. trigonus.
Habitat: The species tends to favour limestone and rocky slopes in semi-desert vegetation. The original range of this species extended from Coahuila and Nuevo León in the north to San Luis Potosí in the south. However, much of this range has been modified by agricultural development. A. retusus is a perennial and obligate gypsophile, occurring regularly in Muhlenbergia grassland and Bouteloua grassland in Central Mexico. Ariocarpus species are the only succulents present in the Muhlenbergia grassland. Although A. retusus has a relatively extensive area of distribution and a large population, it has a very low density. It is a slow growing species. This species is threatened by illegal collecting and agricultural development, however, they do not represent major threats. It is found in commercial cultivation.

Common Names include:
ENGLISH: Star Rock, Living Rock, False Peyote
HUICHOL: Tsuwíri
LITHUANIAN (Lietuvių): Dubusis ariokarpas
RUSSIAN (Русский): Ариокарпус притуплённый
SPANISH (Español): Chautle, Chaute, Biznaga-Maguey, Cimarrón, Falso Peyote, Peyote, Peyote Cimarrón
SWEDISH (Svenska): Myrkottskaktus
UKRAINIAN (Українська): Аріокарпус притуплений

Description: Ariocarpus retususus commonly known as the "Star Rock" is one of the largest species that distinguishes for the fat triangular tubercles forming a starry rosette. It is a widespread and extremely variable plant. Tubercle size and shape vary widely, a terminal areole is sometimes present at the tip. The vast amount of phenotypic variation in the species has led to the erection of several variants and has received numerous unnecessary names of no botanical value.

Habit: Solitary, slow growing geophyte cactus with tubercles slightly projecting above ground level. The flat tuberous body is below the soil.
Stem: Grey, or blue-green, flattened, globose, rounded on top, 3-12 cm high, 10-25 cm in diameter.
Tubercles: Leaf-like, divergent, erect, basally compressed, usually becoming attenuate at the apices, convex or nearly flattened adaxially and often with shallow adaxial undulations or wrinkling, not fissured, 1,5-4 cm long, 1-3,5 cm wide, nearly as wide as long.
Areoles: At the tips of the tubercles, rounded, 1-5 mm in diameter often only on younger specimens.
Flowers: Diurnal 4-5cm in diameter, 2-4,2 cm long, white to pink (or magenta), occasionally with reddish midribs.
Roots: Tap root.
Flowering time: Autumn.
Fruits: White, green, or rarely pinkish, 10-25 mm long, 3-10 mm in diameter.
Remarks: All of the Ariocarpus seedlings are spiny and quite different from adult specimens, though the spines are feather-like.

Ariocarpus retusus (llifle.com)

https://youtu.be/WWJiSl2DOqE

https://youtu.be/hxdJ_kflRxI