Home/Species/ Thompkins' Sedge

Carex tompkinsii

J.T. Howell

Thompkins' Sedge

G3Vulnerable (G3G4) Found in 3 roadless areas NatureServe Explorer →

G3VulnerableGlobal Rank

Medium - lowThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.146697

Element CodePMCYP03DR0

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicendemic to a single state or province

KingdomPlantae

PhylumAnthophyta

ClassMonocotyledoneae

OrderCyperales

FamilyCyperaceae

GenusCarex

Other Common Names

Thompkins' sedge (EN)

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 Date2017-04-14

Change Date2017-04-14

Edition Date2017-04-14

Edition AuthorsGries, D.; rev. M. Martine, rev. A. Treher (2017)

Threat ImpactMedium - low

Range Extent5000-20,000 square km (about 2000-8000 square miles)

Number of Occurrences21 - 80

Rank Reasons

California endemic known from over 50 populations. Population numbers range from less than 5 plants to about 500. Almost all populations are either in National Parks or National Forests. Threats include trail maintenance, spraying, and development.

Range Extent Comments

California endemic, Fresno and Mariposa Counties (Skinner, 1997).

Threat Impact Comments

Threatened by trail maintenance (including rerouting, widening, and spraying) and housing development (California Department of Fish and Game, 1997).

Ecology & Habitat

Habitat

Substrate of loose sand or rock in partially shaded, south-facing walls of steep river canyons; chaparral, cismontane woodland, lower montane coniferous forest, upper montane coniferous forest; 420 to 1800 m (Pearson, 1989 and Skinner, 1997).

Other Nations (1)

United StatesN3

Province	Rank	Native
California	S3	Yes

Plant Characteristics

Economic Value (Genus)No

Roadless Areas (3)

California (3)

Area	Forest	Acres
Agnew	Sequoia National Forest	9,561
Devil Gulch	Sierra National Forest	30,490
Monarch	Sierra National Forest	697

References (5)

California Department of Fish and Game. 1997. RareFind 2 personal computer program. Information dated March 1999. Sacramento, California.
Flora of North America Editorial Committee (FNA). 2002b. Flora of North America north of Mexico. Vol. 23. Magnoliophyta: Commelinidae (in part): Cyperaceae. Oxford Univ. Press, New York. xxiv + 608 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.
Pearson, D.C. 1989. Endangered species alert program manual: Species accounts and procedures. Southern California Edison Environmental Affairs Division.
Skinner, M.W., and B.M. Pavlik, eds. 1997 (1994). Inventory of rare and endangered vascular plants of California. 1997 Electronic Inventory Update of 1994 5th edition, California Native Plant Society, Special Publication No. 1, Sacramento.