Turbinicarpus alonsoi


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Turbinicarpus alonsoi
Species Authority: Glass & S.Arias
Common Name(s):
Spanish Biznaguita
Taxonomic Notes: Accepted as a valid species by Anderson (2001) and Hunt (1999)

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1ab(v)+2ab(v) ver 3.1
Year Published: 2013
Date Assessed: 2009-11-19
Assessor(s): Fitz Maurice, W.A., Sánchez , E., Fitz Maurice, B & Guadalupe Martínez, J.
Reviewer(s): Superina, M. & Goettsch, B.K.
Turbinicarpus alonsoi is considered to be Critically Endangered due to its occurrence in a single location with an area of less than 10 km², and because it is continuing to rapidly decline as a result of illegal collecting.
2002 Critically Endangered

Geographic Range [top]

Range Description:This species is endemic to Guanajuato, Mexico. It grows in a single location of less than 10 km² near Xichú, at about 1,900 m asl.
Mexico (Guanajuato)
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population: The current estimated population size is less than 5,000 individuals.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: This cactus grows in semi-desert scrub on steep rocky calcareous slopes.
Systems: Terrestrial

Use and Trade [top]

Use and Trade: The species is used as an ornamental, for which it is illegally collected in the wild.

Threats [top]

Major Threat(s): These plants are threatened by illegal collecting. The habitat has become widely known to collectors. Since its discovery, the population has been reduced by more than 50%.

Conservation Actions [top]

Conservation Actions: This cactus does not occur in any protected area. It is listed on CITES Appendix I, but the laws governing imports in the countries of destination need to be enforced. This species is currently propagated in Europe from illegally collected plants.
The Cadereyta Regional Botanic Gardens has developed a universal technique to reproduce species of the genus Turbinicarpus (including Gymnocactus), with a rate of 5x/4 weeks and 95% soil adaptation success (E. Sánchez pers. comm. 2011).

Bibliography [top]

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. 2013. IUCN Red List of Threatened Species (ver. 2013.1). Available at: http://www.iucnredlist.org. (Accessed: 12 June 2013).

Citation: Fitz Maurice, W.A., Sánchez , E., Fitz Maurice, B & Guadalupe Martínez, J. 2013. Turbinicarpus alonsoi. In: The IUCN Red List of Threatened Species. Version 2014.3. <www.iucnredlist.org>. Downloaded on 02 April 2015.
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