Mammillaria luethyi
Mammillaria luethyi
Mammillaria luethyi is a species of the genus Mammillaria in the cactus family ( Cactaceae ). The epithet of the species honors the Swiss botanist Jonas Martin Lüthy.
Description
Mammillaria luethyi grows singly or branched with a succulent rübigen root. The globular, flattened spherical, dark green shoots reach a diameter of 1.5 centimeters. The slender cylindrical and protruding warts are very close. Between the warts, the axillae are provided with bristles. There are not formed central spines. The up to 80 projecting to radiating spines are white and stand in serried ranks. They form flat star-shaped pillow with up to 2 millimeters in diameter.
The bright magenta flowers with a bright throat have a length and a diameter of 2 centimeters. The recessed into the body colored fruits are spherical and yellowish green to reddish green. They are 4 to 5 millimeters in diameter and contain black seeds.
Distribution, systematics and hazard
Mammillaria luethyi is common in the north of the Mexican state of Coahuila.
The first description was in 1996 by George S. Hinton.
Mammillaria luethyi was in the Red List of Threatened Species IUCN in 2002 as ' Endangered ( EN )', ie classified as endangered. In 2013 it is described as " Vulnerable (VU) ", ie performed as endangered.