Eriogonum gypsophilum - Woot. & Standl.
Gypsum Buckwheat
Other English Common Names: Gypsum wild-buckwheat, Seven River Hills Buckwheat
Other Common Names: Seven River Hills buckwheat
Taxonomic Status: Accepted
Related ITIS Name(s): Eriogonum gypsophilum Woot. & Standl. (TSN 21146)
Unique Identifier: ELEMENT_GLOBAL.2.135004
Element Code: PDPGN082M0
Informal Taxonomy: Plants, Vascular - Flowering Plants - Buckwheat Family
Image 12060

Public Domain

 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Polygonales Polygonaceae Eriogonum
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Concept Reference
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Concept Reference: Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Concept Reference Code: B94KAR01HQUS
Name Used in Concept Reference: Eriogonum gypsophilum
Taxonomic Comments: Distinct species, has no known close relatives.
Conservation Status
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NatureServe Status

Global Status: G1
Global Status Last Reviewed: 20Jul2009
Global Status Last Changed: 01Jan1983
Rounded Global Status: G1 - Critically Imperiled
Reasons: Known from three general localities in Eddy County, New Mexico. The total area occupied is about 89 ha. The populations appear to be stable. However, the habitat is subject to potential energy development and gypsum mining. Other threats include ORV traffic and grazing.

Nation: United States
National Status: N1

U.S. & Canada State/Province Status
Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
United States New Mexico (S1)

Other Statuses

U.S. Endangered Species Act (USESA): LT, PDL: Listed threatened, proposed for delisting (06Jan2017)
Comments on USESA: In a 90-day petition finding, USFWS has initiated a status review to see if delisting this species is warranted (Federal Register, 9 September 2013). In the January 6, 2017 Federal Register, USFWS proposes to delist Eriogonum gypsophilum. "This determination is based on thoroughly reviewing the best scientific and commercial data available, which indicates the species has recovered and no longer meets the Act?s endangered or threatened definitions."
U.S. Fish & Wildlife Service Lead Region: R2 - Southwest

NatureServe Global Conservation Status Factors

Range Extent Comments: Known only from Eddy County, New Mexico at Seven Rivers, Black River, and Ben Slaughter Draw. There is a false report from Hay Hollow (USFWS 2007).

Area of Occupancy:  
Area of Occupancy Comments: The total length of occupied gypsum outcrops is approximately 5 miles (USFWS 2007).

Number of Occurrences: 1 - 5
Number of Occurrences Comments: Known from three populations (USFWS 2007).

Population Size Comments: It is difficult to estimate population size due to the variable density of plants and their patchy distribution (USFWS 2007). Different methods have been used to estimate population size; some have counted groups of rosettes while others have counted each rosette as an individual (USFWS 2007). The number of plants estimated at the Seven Rivers population ranges from 2800 to 14,168 (USFWS 2007). The number of plants estimated at the Black River population is a minimum of 16,660 (USFWS 2007). The number of plants estimated at the Ben Slaughter Draw population is 18,270 (USFWS 2007).

Overall Threat Impact: High
Overall Threat Impact Comments: The major threat is from oil and gas development and gypsum mining (USFWS 2007). Approximately 50% of the Black River habitat, 95% of the Seven Rivers habitat, and 50% of the Ben Slaughter Draw habitat is currently protected from mineral development by the BLM Special Management Area no surface occupancy provision (P. Tonne 2005 cited by USFWS 2007). Off-road vehicle activity, livestock grazing and trampling, road construction, and flooding from Brantley Lake threaten small portions of the habitat (USFWS 2007).

Short-term Trend Comments: Plant densities at the Seven Rivers population fluctuated but did not increase or decrease significantly between 1987 and 1993 (Knight 1993).

Other NatureServe Conservation Status Information

Distribution
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Global Range: Known only from Eddy County, New Mexico at Seven Rivers, Black River, and Ben Slaughter Draw. There is a false report from Hay Hollow (USFWS 2007).

U.S. States and Canadian Provinces

Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
Color legend for Distribution Map

U.S. & Canada State/Province Distribution
United States NM

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
NM Eddy (35015)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
13 Upper Pecos-Black (13060011)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: A perennial herb with a branching flower stalk from 1.2-2 dm tall, arising from a cluster of very dark green basal leaves. The tiny yellow flowers (May and June) are arranged into tight clusters.
Terrestrial Habitat(s): Barrens, Grassland/herbaceous
Habitat Comments: Open, gypsum in grama grassland, at about 1500 m; semi-arid. Eroded gypsum clay hills and fans, creosote bush communities, 900-1100 m (Flora of North America Editorial Committee 2005).

Economic Attributes Not yet assessed
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Management Summary
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Stewardship Overview: A management agreement is needed to ensure protection in perpetuity from mineral development for oil, gas, and gypsum (USFWS 2007).
Population/Occurrence Delineation Not yet assessed
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Population/Occurrence Viability
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U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
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Authors/Contributors
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NatureServe Conservation Status Factors Edition Date: 19Aug1987
NatureServe Conservation Status Factors Author: Roth, E., rev. DeBruin (1996), rev. A. Tomaino (2009)
Management Information Edition Date: 17Aug2009
Management Information Edition Author: Tomaino, A.

Botanical data developed by NatureServe and its network of natural heritage programs (see Local Programs), The North Carolina Botanical Garden, and other contributors and cooperators (see Sources).

References
Help
  • Flora of North America Editorial Committee. 2005. Flora of North America North of Mexico. Vol. 5. Magnoliophyta: Caryophyllidae: Caryophyllales, Polygonales, and Plumbaginales. Oxford Univ. Press, New York. vii + 656 pp.

  • Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.

  • Knight, P. 1993. A status review of gypsum wild buckwheat. U.S. Fish and Wildlife Service, Albuquerque, New Mexico.

  • New Mexico Native Plant Protection Advisory Committee. 1984. A handbook of rare and endemic plants of New Mexico. Univ. New Mexico Press, Albuquerque. 291 pp.

  • U.S. Fish and Wildlife Service (USFWS). 2007. Gypsum Wild Buckwheat (Eriogonum gypsophilum) 5-Year Review. New Mexico Ecological Services Field Office, Albuquerque. Online. Available: http://ecos.fws.gov/docs/five_year_review/doc1174.pdf (accessed 2009).

  • U.S. Fish and Wildlife Service. 1981. Determination of two New Mexico plants to be endangered species and threatened species, with critical habitat. Federal Register 46(12): 5730-5733.

  • U.S. Fish and Wildlife Service. 2013. 90-Day Finding on a Petition To Delist or Reclassify From Endangered to Threatened Five Southwest Species. Federal Register 78(174): 55046-55051.

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