| Kingdom | Phylum | Class | Order | Family |
|---|---|---|---|---|
| PLANTAE | TRACHEOPHYTA | MAGNOLIOPSIDA | CARYOPHYLLALES | CACTACEAE |
| Scientific Name: | Mammillaria marcosii | |||
| Species Authority: | W.A.Fitz Maurice, B.Fitz Maurice & Glass | |||
Common Name/s:
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| Taxonomic Notes: | Accepted as a valid species by Anderson (2001) and Pilbeam (1999 and provisionally by Hunt (1999). | |||
| Red List Category & Criteria: | Critically Endangered A2ad+3d; B1ab(v)+2ab(v); C1+2a(ii) ver 3.1 |
| Year Assessed: | 2002 |
| Assessor/s | Fitz Maurice, W.A. & Fitz Maurice, B. |
| Evaluator/s: | Stuppy, W. & Taylor, N.P. (Cacti & Succulent Plant Red List Authority) |
|
Justification: Qualifies for listing due to its very small population of less than 150 plants found in a single small area of less than 1,000 km². Since this species was discovered in 1996 (Fitz Maurice et al. 1997), the population has diminished by an estimated 90% due to illegal collecting. The species continues to decline as a result of illegal collecting. (The generation length is estimated at 5–10 years.) |
|
| Range Description: | Found east of Xichu where it grows over a range of less than 1 km². Current estimated population is less than 150 individuals. |
| Countries: |
Native:
Mexico (Guanajuato)
|
| Population Trend: |
Decreasing
|
| Habitat and Ecology: | On steeply sloping volcanic rocky terrain in semi-desert at an altitude of about 1,200 m. |
| Systems: | Terrestrial |
| Major Threat(s): | These plants are threatened by illegal collecting. The habitat is now well known to both commercial and amateur collectors. |
| Conservation Actions: | Listed on CITES App. II, but enforcement of the laws in the countries of destination is needed. |
| Citation: | Fitz Maurice, W.A. & Fitz Maurice, B. 2002. Mammillaria marcosii. In: IUCN 2009. IUCN Red List of Threatened Species. Version 2009.2. <www.iucnredlist.org>. Downloaded on 09 February 2010. |
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