Turbinicarpus gielsdorfianus

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

Bibliography

View Printer Friendly

Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
PLANTAE	TRACHEOPHYTA	MAGNOLIOPSIDA	CARYOPHYLLALES	CACTACEAE

Scientific Name:

Turbinicarpus gielsdorfianus

Species Authority:

(Werderm.) John & Riha

Common Name/s:

Spanish

–

Biznaguita

Taxonomic Notes:

Accepted as a valid species by cactus specialists Anderson (2001) and Hunt (1999). Some hobbyists refer to the genus as Gymnocactus.

Basionym: Echinocactus gielsdorfianus Werderm., 1929. Monats. Deuts. Kakt-Ges., 214-216.

Synonyms = Gymnocatus gielsdorfianus (Werderm. Backeb., 1961; Pediocactus gielsdorfianus (Werderm.) Halda, 1998.

Assessment Information [top]

Red List Category & Criteria:	Critically Endangered B1ab(v)+2ab(v) ver 3.1
Year Published:	2002
Annotations:	Needs updating
Assessor/s:	Anderson, E.F., Fitz Maurice, W.A., Fitz Maurice, B., Hofer, A., Sotomayor, M., Arrendondo, A.G. & Sánchez, B.
Reviewer/s:	Stuppy, W. & Taylor, N.P. (Cacti & Succulent Plant Red List Authority)
Contributor/s:
Justification: The population was thought to be very small (only about 250 plants) but recent surveys have shown that there are about 4,000 mature individuals. Never-the-less there has been an 80% population decline in the last five years. The remaining population has a very small extent of occurrence (0.9 km²). The species continues to decline as a result of illegal collecting. Generation length is estimated to be five years, hence Criterion A does not apply.

Geographic Range [top]

Range Description:	Since this species was rediscovered in 1988 near Cuidad Maiz (Fitz Maurice 1988), the population has been diminished substantially (at least by 80% in the last five years). Grows on a slope, in an area of about 0.9 km². Current estimated population size is about 4,000 mature individuals.
Countries:	Native: Mexico (San Luis Potosí)
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population Trend:	Decreasing

Population Trend:

Decreasing

Habitat and Ecology [top]

Habitat and Ecology:	Semi-desert on rocky calcareous slope at about 1,500 m altitude. The species is strongly dependent on edpahic conditions. The habitat is locally classified as Matorral Rosetófilo, (Rzedowski 1965).
Systems:	Terrestrial

Threats [top]

Major Threat(s):	These plants are threatened by illegal collecting. The habitat has become widely known to collectors.

Major Threat(s):

These plants are threatened by illegal collecting. The habitat has become widely known to collectors.

Conservation Actions [top]

Conservation Actions:	Listed on CITES App.I, but the laws governing imports in the countries of destination need to be enforced. This species has been propagated and made widely available for 60 years, yet the demand for field collected plants remains.

Conservation Actions:

Listed on CITES App.I, but the laws governing imports in the countries of destination need to be enforced. This species has been propagated and made widely available for 60 years, yet the demand for field collected plants remains.

Bibliography [top]

	Anderson, E.F. 2001. The Cactus Family. Timber Press, Portland. Bravo, H. and Sánchez-Mejorada, H. 1991. Las Cactáceas de México. Vol. 2. Universidad Nacional Autónoma de México, D.F. Fitz Maurice, W.A. 1988. Fieldnotes: Rediscovery of Gymnocactus gielsdorfianus. Cactus and Succulent Journal (US) 59(6): 247-249. Hunt, D. 1999. CITES Cactaceae Checklist, 2nd ed. Royal Botanic Gardens, Kew and International Organization for Succulent Plant Study (IOS). IUCN. 2002. 2002 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 8 October 2002. Rzedowski, J. 1965. Vegetación del Estado de san Luis Potosí. Acta Científica Potosina. Editorial UASP. V (1-2). Sotomayor, M., Arredondo, A. and Martínez, M. 2000. El Género Turbinicarpus (Cactaceae) en el estado de San Luis Potosí, México. Edit INIFAP, México.

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

Bravo, H. and Sánchez-Mejorada, H. 1991. Las Cactáceas de México. Vol. 2. Universidad Nacional Autónoma de México, D.F.

Fitz Maurice, W.A. 1988. Fieldnotes: Rediscovery of Gymnocactus gielsdorfianus. Cactus and Succulent Journal (US) 59(6): 247-249.

Hunt, D. 1999. CITES Cactaceae Checklist, 2nd ed. Royal Botanic Gardens, Kew and International Organization for Succulent Plant Study (IOS).

IUCN. 2002. 2002 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 8 October 2002.

Rzedowski, J. 1965. Vegetación del Estado de san Luis Potosí. Acta Científica Potosina. Editorial UASP. V (1-2).

Sotomayor, M., Arredondo, A. and Martínez, M. 2000. El Género Turbinicarpus (Cactaceae) en el estado de San Luis Potosí, México. Edit INIFAP, México.

Citation:	Anderson, E.F., Fitz Maurice, W.A., Fitz Maurice, B., Hofer, A., Sotomayor, M., Arrendondo, A.G. & Sánchez, B. 2002. Turbinicarpus gielsdorfianus. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 18 June 2013.
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 fill in the feedback form so that we can correct or extend the information provided