Obregonia denegrii

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
PLANTAE	TRACHEOPHYTA	MAGNOLIOPSIDA	CARYOPHYLLALES	CACTACEAE

Scientific Name:

Obregonia denegrii

Species Authority:

Fric

Common Name/s:

English	–	Artichoke Cactus
Spanish	–	Obregnita

Taxonomic Notes:

Accepted as a valid species by Anderson (2001) and Hunt (1999).

Assessment Information [top]

Red List Category & Criteria:	Vulnerable 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.
Reviewer/s:	Stuppy, W. & Taylor, N.P. (Cacti & Succulent Plant Red List Authority)
Contributor/s:
Justification: Qualifies due to its small total range (350 km²) and no more than five subpopulations in a small area. The population of less than 5,000 plants continues to decrease due to collecting. Generation time is estimated to be 10 years.

Geographic Range [top]

Range Description:	This species has been the object of several surveys during the past 20 years. An international team sponsored by WWF studied it in 1986 (Anderson, et al. 1994), and a CITES-funded project monitored a major population in the early 1990s (CANTE A.C. and Desert Botanical Garden 1997). In addition, W.A. and B. Fitz Maurice have visited the population three times. The total population is estimated to have decreased by about 50% in the past 50 years. The current population is estimated to be about 5,000 individuals.
Countries:	Native: Mexico (Tamaulipas)
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 (or Tamaulipan Shrubland according to Anderson et al. (1994)) in the Valley of Jaumave at an altitude of about 1,000 m.
Systems:	Terrestrial

Threats [top]

Major Threat(s):	Erosion is being accelerated by the grazing activities of livestock and plants uprooted as a result have been recorded (Anderson et al. 1994). Illegal commercial collecting and collecting by local people for medicinal purposes (used to treat rheumatism) affect some subpopulations. Road construction and urban development at one site may also pose a threat.

Major Threat(s):

Erosion is being accelerated by the grazing activities of livestock and plants uprooted as a result have been recorded (Anderson et al. 1994). Illegal commercial collecting and collecting by local people for medicinal purposes (used to treat rheumatism) affect some subpopulations. Road construction and urban development at one site may also pose a threat.

Conservation Actions [top]

Conservation Actions:	Listed on CITES App.I, but the laws governing imports in the countries of destination need to be enforced. The species is widely propagated.

Conservation Actions:

Listed on CITES App.I, but the laws governing imports in the countries of destination need to be enforced. The species is widely propagated.

Citation:	Anderson, E.F., Fitz Maurice, W.A. & Fitz Maurice, B. 2002. Obregonia denegrii. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 21 May 2013.
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