Ceratozamia zaragozae

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
PLANTAE	TRACHEOPHYTA	CYCADOPSIDA	CYCADALES	ZAMIACEAE

Scientific Name:	Ceratozamia zaragozae
Species Authority:	Medellín-Leal

Assessment Information [top]

Red List Category & Criteria:

Critically Endangered A2acd; B1ab(iii,iv,v)+2ab(iii,iv,v); C1 ver 3.1

Year Published:

2010

Assessor/s:

Chemnick, J & Gregory, T.

Reviewer/s:

Donaldson, J.S. & Bösenberg, J.D.

Contributor/s:

Justification:
Qualifies for Critically Endangered based on extent of decline (95%) over the past 50 years, occurrence in a single location with a small extent of occurrence (45 km²) and area of occupancy (<10 km²) and small population size.

History:

2003	–	Critically Endangered (IUCN 2003)
2003	–	Critically Endangered
1997	–	Endangered (Walter and Gillett 1998)

Geographic Range [top]

Range Description:	This species is endemic to San Luis Potosí state, Mexico. Plants are found SW of Rio Verde, in the Capulin district.
Countries:	Native: Mexico (San Luis Potosí)
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	Plants are only known from the type locality, at which there are less than 50 plants.
Population Trend:	Decreasing

Habitat and Ecology [top]

Habitat and Ecology:	Plants grow in the Sierra de la Equiteria, in dry pine-oak forests on volcanic outcrops and in rhyolitic soils.
Systems:	Terrestrial

Threats [top]

Major Threat(s):	Plants have been severely affected by over-collection, to the point of being almost eradicated in certain areas.

Major Threat(s):

Plants have been severely affected by over-collection, to the point of being almost eradicated in certain areas.

Conservation Actions [top]

Conservation Actions:	This species is listed on Appendix I of the CITES Appendices.

Conservation Actions:

This species is listed on Appendix I of the CITES Appendices.

Citation:	Chemnick, J & Gregory, T. 2010. Ceratozamia zaragozae. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 24 May 2013.
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