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Mammillaria nana 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Caryophyllales Cactaceae

Scientific Name: Mammillaria nana Backeb. ex Mottram
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: Considered a synonym of M. crinita by cactus specialist Anderson (2001) and by the assessors (Fitz Maurice 2002). Accepted as a valid species by cactus specialists, Hunt (1999), provisionally, and Pilbeam (1999).

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2017
Date Assessed: 2009-11-16
Assessor(s): Fitz Maurice, B, Guadalupe Martínez, J., Sánchez , E. & Fitz Maurice, W.A.
Reviewer(s): Superina, M. & Goettsch, B.K.
Facilitator/Compiler(s): Schipper, J.
Justification:

Mammillaria nana qualifies as Least Concern due to its extensive subpopulations over a large area, where little decline from human activities is in current evidence.

Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is endemic to Mexico, where it occurs in the states of Guanajuato, Querétaro and San Luis Potosí at elevations of 1,600 to 1,800 m asl. The species appears over an area of 18,000 km2.
Countries occurrence:
Native:
Mexico (Guanajuato, Querétaro, San Luis Potosí)
Additional data:
Lower elevation limit (metres):1600
Upper elevation limit (metres):1800
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This species is common with an estimated population size of more than 100,000 individuals.
Current Population Trend:Stable
Additional data:
Number of mature individuals:100000
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species is found on volcanic soil in xerophyllous scrub.
Systems:Terrestrial

Use and Trade [top]

Use and Trade: This species is occasionally collected for use as an ornamental. It is in commercial cultivation for the international trade.

Threats [top]

Major Threat(s):

There is little interest in collecting so this represents only a small threat. Increased agricultural use and housing expansion within its habitat also pose a small threat. Temperature extremes such as the 100 year freeze on the Altiplano in December 1997 present a serious but unpredictable threat.

Conservation Actions [top]

Conservation Actions: This species is found in multiple protected areas.

This 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 category “subject to special protection” (Pr; SEMARNAT 2010).

Amended [top]

Amended reason: The species distribution map has been added.

Citation: Fitz Maurice, B, Guadalupe Martínez, J., Sánchez , E. & Fitz Maurice, W.A. 2017. Mammillaria nana (amended version of 2013 assessment). The IUCN Red List of Threatened Species 2017: e.T152728A121546436. . Downloaded on 23 February 2018.
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