Sidalcea covillei - Greene
Owens Valley Checker-mallow
Other Common Names: Owens Valley sidalcea
Taxonomic Status: Accepted
Related ITIS Name(s): Sidalcea covillei Greene (TSN 21860)
Unique Identifier: ELEMENT_GLOBAL.2.128285
Element Code: PDMAL11040
Informal Taxonomy: Plants, Vascular - Flowering Plants - Mallow Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Malvales Malvaceae Sidalcea
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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: Sidalcea covillei
Conservation Status
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NatureServe Status

Global Status: G3
Global Status Last Reviewed: 09Jan2006
Global Status Last Changed: 09Jan2006
Rounded Global Status: G3 - Vulnerable
Reasons: Endemic to California's Owens Valley and currently known from 44 sites. Several large populations (over 100,000 individuals) currently exist. However, the species was much more abundant in the past. The primary reasons for the decline are uncertain; excessive ground water pumping, ground and surface water diversions, and/or long-term drought may have played a role. The extant populations appear to be stable, although Manning (1995) reported that some sites were in poor condition (low soil moisture, the presence of non-native plants, and other factors). Over 2 million plants were reported in 2004 despite continued pressures. The high numbers are probably due to increased intensity of monitoring. Nearly all plants occur on LADWP lands where they are at least partially protected and managed.
Nation: United States
National Status: N3

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 (S2)

Other Statuses

Comments on USESA: Was previously a candidate, but was removed from candidacy on February 28, 1996 in a notice of review.
U.S. Fish & Wildlife Service Lead Region: R1 - Pacific

NatureServe Global Conservation Status Factors

Range Extent Comments: The known range is located only in Inyo County, California. It covers about 2770 sq mi.

Area of Occupancy: 3-125 4-km2 grid cells
Area of Occupancy Comments: The occupied area covers approximately 1440 acres. This is an estimate.

Number of Occurrences: 21 - 80
Number of Occurrences Comments: There are about 44 known EO's.

Population Size Comments: More than 2 million plants were reported in the most recent (and mostly unprocessed) data from 2004.

Number of Occurrences with Good Viability/Integrity: Some (13-40)
Viability/Integrity Comments: There may be as many as 28 EO's ranked good or better.

Overall Threat Impact: Very high - high
Overall Threat Impact Comments: Grazing is the most significant threat, listed for most EO's. Other threats include weed invasion, ORV use, hydrology changes and development.

Short-term Trend: Relatively Stable (<=10% change)
Short-term Trend Comments: Much more abundant in the past, but current populations and distribution described as stable by USFWS (1996). Still stable in 2005; improved monitoring techniques have found many more plants.

Long-term Trend: Decline of 30-50%
Long-term Trend Comments: A moderate decline has occurred in the long term due to hydrology changes, weed invasions and grazing.

Environmental Specificity: Very narrow. Specialist or community with key requirements scarce.
Environmental Specificity Comments: Known only from alkaline meadows and seeps in Inyo Co., California.

Other NatureServe Conservation Status Information

Distribution
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Global Range: The known range is located only in Inyo County, California. It covers about 2770 sq mi.

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.


U.S. Distribution by County Help
State County Name (FIPS Code)
CA Inyo (06027)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
18 Crowley Lake (18090102)+, Owens Lake (18090103)+, Indian Wells-Searles Valleys (18090205)+*
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: A perennial herb, mostly 3-6 dm tall. Pink-lavender flowers are borne in spikes above a mass of rounded, lobed, fleshy leaves. Both the leaves and the inflorescence are covered with star-shaped hairs. Blooms in spring.
Palustrine Habitat(s): HERBACEOUS WETLAND, TEMPORARY POOL
Terrestrial Habitat(s): Grassland/herbaceous
Habitat Comments: Alkaline meadows, seasonally or permanently moist due to high ground water or lateral flow from nearby streams.
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: 09Jan2006
NatureServe Conservation Status Factors Author: Maybury, K., rev. R. Bittman 2006

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
  • Hickman, J. C., ed. 1993. The Jepson manual: Higher plants of California. University of California Press, Berkeley, CA. 1400 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.

  • Manning, S.J. 1995. Report on 1994 rare plant site visits. Unpublished report to Inyo County/Los Angeles Technical Group. Inyo County Water Department. 16 pp.

  • U.S. Fish and Wildlife Service. 1996. Draft Owens Basin wetland and aquatic species recovery plan, Inyo and Mono counties, California. U.S. Fish and Wildlife Service, Portland, Oregon. 133 pp.

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