|Scientific Name:||Echinocactus grusonii|
|Taxonomic Notes:||Accepted as a valid species by Anderson (2001) and Hunt (1999).|
|Red List Category & Criteria:||Critically Endangered A2acd; B1ab(v)+2ab(v); C1 ver 3.1|
|Assessor/s:||Fitz Maurice, W.A. & Fitz Maurice, B.|
|Reviewer/s:||Stuppy, W. & Taylor, N.P. (Cacti & Succulent Plant Red List Authority)|
Qualifies due to its limited range, relatively small numbers of plants and the fact that the population was critically reduced by the creation of the Zimapán dam and reservoir in the 1990s. The area of occupancy is less than 10 km². Illegal collecting continues to further reduce the population. The generation time is estimated to be 30 years.
|Range Description:||This species occurs on medium to steep slopes of volcanic rock near Mesa de Léon. The extent of occurrence is 25 km² whereas the area of occupancy is less than 10 km². The total number of plants is estimated to be less than 250.|
|Range Map:||Click here to open the map viewer and explore range.|
|Habitat and Ecology:||Semi-desert, among volcanic rocks on medium to steep slopes at an altitude of about 1,400 m.|
|Major Threat(s):||Illegal collecting.|
|Conservation Actions:||Listed on CITES App.II, but the laws governing imports in the countries of destination need to be enforced. This is one of the most widely propagated cacti, with literally millions of individuals grown by commercial nurseries and hobbyists, thus making it very readily available throughout the world, but that does not stop the ongoing poaching.|
Anderson, E.F. 2001. The Cactus Family. Timber Press, Portland.
Hunt, D. 1999. CITES Cactaceae Checklist, 2nd ed. Royal Botanic Gardens, Kew and International Organization for Succulent Plant Study (IOS).
IUCN. 2002. 2002 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 8 October 2002.
|Citation:||Fitz Maurice, W.A. & Fitz Maurice, B. 2002. Echinocactus grusonii. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 20 June 2013.|
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