Eriogonum evanidum - Reveal
a buckwheat
Taxonomic Status: Provisionally accepted
Unique Identifier: ELEMENT_GLOBAL.2.802906
Element Code: PDPGN08780
Informal Taxonomy: Plants, Vascular - Flowering Plants - Buckwheat Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Polygonales Polygonaceae Eriogonum
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Concept Reference
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Concept Reference: 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.
Concept Reference Code: B05FNA05HQUS
Name Used in Concept Reference: Eriogonum evanidum
Conservation Status
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NatureServe Status

Global Status: G1
Global Status Last Reviewed: 20May2016
Global Status Last Changed: 30Jul2007
Ranking Methodology Used: Ranked by calculator
Rounded Global Status: G1 - Critically Imperiled
Reasons: Endemic to southern California and Baja California. Less than 10 extant occurrences with low population sizes (less than 150). Threats include recreation (ORVs and trampling), development, and grazing. Several occurrences in San Bernardino and one in Cleveland National Forest.
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 California (S1)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Endemic to southern California and Baja California, Mexico. Occurs in three areas of California: the San Bernardino Mountains in San Bernardino County, the San Jacinto Mountains in Riverside County, and the Laguna Mountains in San Diego County (Fraga et al. 2012).

Area of Occupancy: 6-25 4-km2 grid cells
Area of Occupancy Comments:  

Number of Occurrences: 1 - 20
Number of Occurrences Comments: Nine occurrences but about 3 are historic. The species is reported from Baja California but no record of occurrences (observation or herbarium) were located online.

Number of Occurrences with Good Viability/Integrity: Very few (1-3)

Overall Threat Impact: High
Overall Threat Impact Comments: Threats include development, grazing, road traffic (one site occurs along the road in a likely parking spot for access to nearby area), recreational use, and trampling.

Short-term Trend: Decline of 10-30%
Short-term Trend Comments: Two occurrences with poor viability.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Endemic to southern California and Baja California, Mexico. Occurs in three areas of California: the San Bernardino Mountains in San Bernardino County, the San Jacinto Mountains in Riverside County, and the Laguna Mountains in San Diego County (Fraga et al. 2012).

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 CA

Range Map
No map available.

National Distribution Outside of U.S. & Canada: Mexico

U.S. Distribution by County Help
State County Name (FIPS Code)
CA Riverside (06065), San Bernardino (06071), San Diego (06073)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
18 San Jacinto (18070202)+, Santa Ana (18070203)+, San Luis Rey-Escondido (18070303)+, San Diego (18070304)+, Cottonwood-Tijuana (18070305)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Duration: ANNUAL
Terrestrial Habitat(s): Forest/Woodland, Shrubland/chaparral, Woodland - Mixed
Habitat Comments: Sandy to gravelly flats and slopes, sagebrush communities, oak and montane conifer woodlands (Flora of North America Editorial Committee 2006).

Economic Attributes Not yet assessed
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Management Summary Not yet assessed
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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: 20May2016
NatureServe Conservation Status Factors Author: Bittman and Treher (2016)

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
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  • Fraga, N.S., E. Kempton, L. Gross, and D. Bell. 2012. Reappearance of the Vanishing Wild Buckwheat: A Status Review of Eriogonum evanidum (Polygonaceae). Madroņo 59(3):150-155.

  • 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.

  • Reveal, J.L. 2004. New entities in Eriogonum (Polygonaceae: Eriogonoideae). Phytologia 86(3): 121-159.

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