|Scientific Name:||Strombocactus disciformis|
|Species Authority:||(DC.) Britton & Rose|
Mammillaria disciformis DC.
|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:||Two subspecies are recognized, the nominate form and subsp. esperanzae Glass & S. Arias.|
|Red List Category & Criteria:||Vulnerable B1ab(v) ver 3.1|
|Assessor(s):||Gómez-Hinostrosa, C., Sánchez , E., Guadalupe Martínez, J. & Bárcenas Luna, R.|
|Reviewer(s):||Superina, M., Goettsch, B.K. & Chanson, J.S.|
Strombocactus disciformis is considered to be Vulnerable because of its limited range (extent of occurrence approximately 4,500 km2), it occurs in less than 10 locations, and is experiencing a decline in mature individuals due to illegal overcollection.
|Range Description:||The species occurs in Mexico in the states of Guanajuato, Hidalgo and Querétaro (Hernández et al. 2004).|
Native:Mexico (Guanajuato, Hidalgo, Querétaro)
|Number of Locations:||9|
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||This species is relatively abundant in canyon habitats. There are 19 known localities.|
|Current Population Trend:||Decreasing|
|Habitat and Ecology:||The species is reported in matorral on steep, calcareous, mudrock (lutita) alluvial cliffs along stream beds or canyon walls (Lüthy 2001).|
|Use and Trade:||This cactus is found in the Mexican trade of ornamental plants (Bárcenas 2003).|
|Major Threat(s):||Illegal collection for the ornamental plant trade is an increasing threat.|
The species is legally protected in Mexico by the national list of species at risk of extinction, NOM-059-SEMARNAT-2010, where it is listed under the category “threatened” (A; SEMARNAT 2010). It occurs in a protected area.
An important step for the conservation of the species is commercial propagation to reduce the collection from wild populations. A micropropagation technique has been established at the Cadereyta Regional Botanic Gardens with a rate of 10x/4 weeks, with 85% soil adaptation success (E. Sánchez pers. comm. 2011).
The species is included in CITES Appendix I.
|Citation:||Gómez-Hinostrosa, C., Sánchez , E., Guadalupe Martínez, J. & Bárcenas Luna, R. 2013. Strombocactus disciformis. The IUCN Red List of Threatened Species 2013: e.T152318A623148. . Downloaded on 26 November 2015.|
|Feedback:||If you see any errors or have any questions or suggestions on what is shown on this page, please provide us with feedback so that we can correct or extend the information provided|