|Scientific Name:||Turbinicarpus alonsoi|
|Species Authority:||Glass & S.Arias|
|Taxonomic Source(s):||Hunt, D., Taylor, N. and Charles, G. (compilers and editors). 2006. The New Cactus Lexicon. dh Books, Milborne Port, UK.|
|Taxonomic Notes:||Accepted as a valid species by Anderson (2001) and Hunt (1999)|
|Red List Category & Criteria:||Critically Endangered B1ab(v)+2ab(v) ver 3.1|
|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.
|Previously published Red List assessments:||
|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.|
|Estimated area of occupancy (AOO) - km2:||9|
|Number of Locations:||1|
|Lower elevation limit (metres):||1900|
|Upper elevation limit (metres):||1900|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||The current estimated population size is less than 5,000 individuals.|
|Current Population Trend:||Decreasing|
|Habitat and Ecology:||This cactus grows in semi-desert scrub on steep rocky calcareous slopes.|
|Use and Trade:||The species is used as an ornamental, for which it is illegally collected in the wild.|
|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%.|
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).
|Citation:||Fitz Maurice, W.A., Sánchez , E., Fitz Maurice, B & Guadalupe Martínez, J. 2013. Turbinicarpus alonsoi. The IUCN Red List of Threatened Species 2013: e.T40972A2948392. http://dx.doi.org/10.2305/IUCN.UK.2013-1.RLTS.T40972A2948392.en . Downloaded on 04 October 2015.|