Echinocereus nivosus

Echinocereus nivosus is a species of cactus native to Mexico.
Distribution and habitat.
The species is known only from two collection sites about 2,000 m above sea level in the Sierra Madre Oriental, in the southeastern part of the state of Coahuila. It inhabits exposed sites of limestone rock.
Conservation.
The species is currently classified as Critically Endangered by the IUCN due to its extremely restricted distribution, apparently low total population size, and being sought after by collectors.