Regularity: Regularly occurring
Global Range: It occurs in Texas (near Rio Grande in Presidio and Brewster Cos. and along river below Laredo in Webb Co.) and Mexico (from Chihuahua to Nuevo Leon and Zacatecas).
Habitat and Ecology
Comments: It occurs on gravelly areas of hills and washes in desert at 750-900 m.
Number of Occurrences
Note: For many non-migratory species, occurrences are roughly equivalent to populations.
Estimated Number of Occurrences: 6 - 20
Comments: Ten EO's (Benson 1982).
Life History and Behavior
IUCN Red List Assessment
Red List Category
Red List Criteria
Mammillaria pottsii has a very wide range, is abundant, and there are no major threats. Hence, it is listed as Least Concern.
National NatureServe Conservation Status
Rounded National Status Rank: NNR - Unranked
NatureServe Conservation Status
Rounded Global Status Rank: G4 - Apparently Secure
Comments: Most cacti subject to horticultural collecting.
Mammillaria pottsii, also known as fox-tail cactus or rat-tail nipple cactus, is a species of flowering plant in the Cactaceae family. It was first described by Scheer ex Salm-Dyck, Cact. Hort. 1849: 104 (1850) According to the United Nations Environment Programme, M. leona is a synonym for M. pottsii.
- "Mammillaria pottsii". Flora of North America. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242415363. Retrieved 28 January 2011.
- "Mammillaria pottsii". http://www.mammillarias.net/gallery/mammillaria_species.php?searchstring=pottsii&lg=uk. Retrieved 28 January 2011.
- "Mammilaria pottsii". United Nations Environment Programme, World Conservation Monitoring Centre. http://sea.unep-wcmc.org/isdb/CITES/Taxonomy/tax-species-result.cfm?displaylanguage=eng&source=plants&Genus=Mammillaria&Species=pottsii&Country=&tabname=names. Retrieved 29 January 2011.
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