Mammillaria albiflora 


Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Caryophyllales Cactaceae

Scientific Name: Mammillaria albiflora
Species Authority: (Werderm.) Backeb.
Common Name(s):
Spanish Biznaguita
Mammillaria herrerae Werderm. variety albiflora Werderm.
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 cactus specialists, Anderson (2001), Hunt (1999) and Pilbeam (1999).

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1ab(iii,v)+2ab(iii,v) ver 3.1
Year Published: 2013
Date Assessed: 2009-11-19
Assessor(s): Fitz Maurice, B, Fitz Maurice, W.A., Sánchez , E., Guadalupe Martínez, J. & Bárcenas Luna, R.
Reviewer(s): Superina, M. & Goettsch, B.K.
Facilitator/Compiler(s): Schipper, J.
Mammillaria albiflora is listed as Critically Endangered due to its very restricted range (extent of occurrence and area of occupancy less than 5 km²), its occurrence in a single location, and a continuing population decline as a result of illegal collecting that is also reducing its range. Its population has been diminished by an estimated 50% over the past 20 years, and the decline in mature individuals is continuing. Although a portion of the site has recently been enclosed with a chain link fence to protect it, this did not prevent access to the site.
Previously published Red List assessments:
2002 Critically Endangered (CR)

Geographic Range [top]

Range Description: This species is endemic to Guanajuato, Mexico, and occurs in a single location to the south of Pozos. The area of occupancy is less than 5 km2. It is found around 2,000 m asl.
Countries occurrence:
Mexico (Guanajuato)
Estimated area of occupancy (AOO) - km2: 5
Number of Locations: 1
Lower elevation limit (metres): 2000
Upper elevation limit (metres): 2000
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The population of this species has been diminished by an estimated 50% over the past 20 years. The current estimated population is 5,000 individuals growing over an area of less than 5 km².
Current Population Trend: Decreasing
Additional data:
Number of mature individuals: 5000 Continuing decline of mature individuals: Yes
Population severely fragmented: Unknown
All individuals in one subpopulation: Yes

Habitat and Ecology [top]

Habitat and Ecology: This species grows on sloping calcareous rock in semi-desert.
Systems: Terrestrial
Continuing decline in area, extent and/or quality of habitat: Yes

Use and Trade [top]

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

Threats [top]

Major Threat(s): This species is threatened by illegal collecting. The habitat is now well known to both commercial and amateur collectors. A residential development is in progress in the area which represents a potential threat. However, the developers are interested in the idea of establishing a protected area.

Conservation Actions [top]

Conservation Actions: The species is listed on CITES Appendix II, but there is a need to enforce the laws in the countries of destination for international trade. Recently a portion of the site has been enclosed with a chain link fence by El Charco del Ingenio of San Miguel de Allende with the support of the British Cactus and Succulent Society. However, this fence was quickly broken through and does not prevent access to the site. The species has long been propagated around the world.

Classifications [top]

3. Shrubland -> 3.5. Shrubland - Subtropical/Tropical Dry
suitability: Suitable season: resident major importance:Yes
0. Root -> 6. Rocky areas (eg. inland cliffs, mountain peaks)
suitability: Suitable season: resident 
1. Land/water protection -> 1.1. Site/area protection
5. Law & policy -> 5.4. Compliance and enforcement -> 5.4.1. International level

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
  Occur in at least one PA:Yes
In-Place Species Management
  Subject to ex-situ conservation:Yes
In-Place Education
  Included in international legislation:Yes
  Subject to any international management/trade controls:Yes
1. Residential & commercial development -> 1.1. Housing & urban areas
♦ timing: Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

5. Biological resource use -> 5.2. Gathering terrestrial plants -> 5.2.1. Intentional use (species is the target)
♦ timing: Ongoing    
→ Stresses
  • 2. Species Stresses -> 2.1. Species mortality

♦  Pets/display animals, horticulture
 National : ✓  International : ✓ 

♦  Establishing ex-situ production *

Bibliography [top]

Anderson, E.F. 2001. The Cactus Family. Timber Press, Portland.

Backeberg, K. 1937. Mammillaria albiflora Bchbg. Blatter Kakteenforsch 2.

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: (Accessed: 12 June 2013).

Pilbeam, J. 1999. Mammillaria. Cirio Publishing Services, Southampton.

Werdermann, E. 1931. M. herrerae Werd und ihre Varietat albiflora Werd. Notizblatt des Botanischen Gartens und Museums zu Berlin-Dahlem. Berlin-Dahlem 277.

Citation: Fitz Maurice, B, Fitz Maurice, W.A., Sánchez , E., Guadalupe Martínez, J. & Bárcenas Luna, R. 2013. Mammillaria albiflora. The IUCN Red List of Threatened Species 2013: e.T40824A2934715. . Downloaded on 30 November 2015.
Disclaimer: To make use of this information, please check the <Terms of Use>.
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