Home/Species/ Serpentine Collomia

Collomia diversifolia

Greene

Serpentine Collomia

G4Apparently Secure Found in 2 roadless areas NatureServe Explorer →

G4Apparently SecureGlobal Rank

MediumThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.132248

Element CodePDPLM02020

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicendemic to a single state or province

KingdomPlantae

PhylumAnthophyta

ClassDicotyledoneae

OrderSolanales

FamilyPolemoniaceae

GenusCollomia

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.

Conservation Status

Rank MethodLegacy Rank calculation - Excel v3.1x

Review Date2014-10-08

Change Date2014-10-08

Edition Date2014-10-08

Edition AuthorsOliver, L., rev. R. Bittman (2014)

Threat ImpactMedium

Range Extent20,000-200,000 square km (about 8000-80,000 square miles)

Number of Occurrences81 - 300

Rank Reasons

Collomia diversifolia is endemic to California and known from Contra Costa, Colusa, Glenn, Lake, Mendocino, Napa, Yolo, Shasta, and Stanislaus counties (CNPS 2001). While C. diversifolia is considered rare, it is found in sufficient numbers and is distributed such that the potential of extinction is low at this time (CNPS 2001). This Collomia is found in chaparral and cismontane woodland on serpentinite or rocky/gravelly soils between 300 and 600 meters in elevation (Hickman 1993, CNPS 2001). Threats include energy development and vehicles.

Range Extent Comments

Endemic to the San Francisco Bay area and North Coast Ranges of California and known from Contra Costa, Colusa, Glenn, Lake, Mendocino, Napa, Yolo, Shasta, and Stanislaus counties (CNPS 2001).

Occurrences Comments

There are 102 unprocessed sources in CNDDB (2014), and 128 Consortium of California Herbaria records (2014).

Threat Impact Comments

Threats include energy development and vehicles (CNDDB 2014).

Ecology & Habitat

Other Nations (1)

United StatesN4

Province	Rank	Native
California	S4	Yes

Threat Assessments

Threat	Scope	Severity	Timing
3 - Energy production & mining	—	—	—
6 - Human intrusions & disturbance	—	—	—
6.1 - Recreational activities	—	—	—

Plant Characteristics

Economic Value (Genus)No

Roadless Areas (2)

California (2)

Area	Forest	Acres
Snow Mountain	Mendocino National Forest	14,457
Thomes Creek	Mendocino National Forest	16,616

References (4)

California Native Plant Society (CNPS). 2001. Inventory of Rare and Endangered Plants of California (sixth edition). Rare Plant Scientific Advisory Committee, David P. Tibor, Convening Editor. California Native Plant Society. Sacramento, CA. x + 388pp.
California Natural Diversity Database (CNDDB). 2014. RareFind Version 5. California Department of Fish and Game, Sacramento.
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.

Collomia diversifolia

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