|Scientific Name:||Mammillaria anniana|
|Species Authority:||Glass & R.C.Foster|
|Taxonomic Notes:||Accepted as a valid species by cactus specialists, Anderson (2001), Hunt (1999) and Pilbeam (1999).|
|Red List Category & Criteria:||Critically Endangered A4ad; B1ab(v)+2ab(v) 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)|
Since this species was discovered by Alfred Lau in 1979, the population has diminished by an estimated 80% (Fitz Maurice 1993). Also qualifies due to its small population (< 500 plants) in a single very small area (20x100 m), where it continues to decline as a result of illegal collecting.
|Range Description:||Occurs on Cerro Bernal where it grows on a steep volcanic rock face over about 2,000 square meters (plan view). Current estimated population is less than 500 individuals.|
|Range Map:||Click here to open the map viewer and explore range.|
|Habitat and Ecology:||Steep volcanic rock in semi-desert at about 2,400 m altitude.|
|Major Threat(s):||Threatened by illegal collecting. The habitat is now well known to both commercial and amateur collectors and is protected only by the difficulty of access.|
|Conservation Actions:||Need to enforce the laws in the countries of destination (listed on CITES App. II). These plants have been widely propagated worldwide for 20 years.|
Anderson, E.F. 2001. The Cactus Family. Timber Press, Portland.
Fitz Maurice, W. A. and B. 1993. Fieldnotes--A visit to Mammillaria anniana. Cactus and Succulent Journal (US) 65: 3.
Glass, C. and Foster, R. 1981. Mammillaria anniana. Cactus and Succulent Journal (US) 53: 2.
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.
Pilbeam, J. 1999. Mammillaria. Cirio Publishing Services, Southampton.
|Citation:||Fitz Maurice, W.A. & Fitz Maurice, B. 2002. Mammillaria anniana. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 24 May 2013.|
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