Home/Species/ Cascade Sedge

Carex scabriuscula

Mackenzie

Cascade Sedge

G3Vulnerable (G3G4) Found in 5 roadless areas NatureServe Explorer →

G3VulnerableGlobal Rank

UnknownThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.152285

Element CodePMCYP03C40

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicendemic to a single nation

KingdomPlantae

PhylumAnthophyta

ClassMonocotyledoneae

OrderCyperales

FamilyCyperaceae

GenusCarex

Synonyms

Carex gigas(Holm) Mackenzie

Other Common Names

Siskiyou sedge (EN) Siskiyou Sedge (EN)

Concept Reference

Kartesz, J.T. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. First edition. In: Kartesz, J.T., and C.A. Meacham. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden, Chapel Hill, N.C.

Taxonomic Comments

Kartesz (1999) and FNA (2002, vol. 23) recognize Carex scabriuscula with C. gigas as a synonym. In contrast, Kartesz 1994 recognized Carex gigas with C. scabriuscula as a synonym. Both names were described in the same year so there was some confusion about which had priority.

Conservation Status

Review Date2008-06-05

Change Date2000-09-27

Edition Date2005-08-15

Edition AuthorsMacBryde, Bruce, R. Bittman 2005

Threat ImpactUnknown

Range Extent1000-200,000 square km (about 400-80,000 square miles)

Number of Occurrences81 - 300

Rank Reasons

Carex scabriuscula (synonym C. gigas) occurs in southwestern Oregon (Siskiyou Mountains) where it is rare (Wilson et al. 1999), and in northern California (850-1800 meters) where it has been reported as uncommon in wet meadows (Hickman 1993) in Plumas, Trinity, Siskiyou and Del Norte counties. There are at least 60 occurrences in California and 24 in Oregon. This plant is probably under-surveyed in CA since it is a CNPS List 4 or watch list species. Where population numbers are known they can vary from 10 to thousands. The level of information on area of occupancy, population numbers, population condition and threats is minimal in California; in Oregon there are approximately 2300 plants known, some of which occur on protected lands including Wilderness, an SIA and A PRNA.

Range Extent Comments

Range extends from the northern counties in California (Plumas, Trinity, Siskiyou, Del Norte) to Oregon.

Occurrences Comments

California has about 60 unprocessed occurrences. Oregon has about 24 occurrences.

Threat Impact Comments

Theats likely include logging, road widening and maintenance, recreational use, ORV's and possibly development in some areas.

Ecology & Habitat

Other Nations (1)

United StatesN3

Province	Rank	Native
Oregon	S3	Yes
California	S4	Yes

Plant Characteristics

Economic Value (Genus)No

Roadless Areas (5)

California (5)

Area	Forest	Acres
Bonanza King	Shasta-Trinity National Forest	16,402
Bucks Lake	Plumas National Forest	680
Castle Crags A	Shasta-Trinity National Forest	113
Castle Crags B	Shasta-Trinity National Forest	1,619
Mt. Eddy	Shasta-Trinity National Forest	7,232

References (8)

Abrams, L. 1940. Illustrated flora of the Pacific states: Washington, Oregon, and California. Vol. 1. Ophioglossaceae to Aristolochiaceae. Stanford Univ. Press, Stanford, California. 538 pp.
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.
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.
Kartesz, J.T. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. First edition. In: Kartesz, J.T., and C.A. Meacham. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden, Chapel Hill, N.C.
Peck, M.E. 1961. A manual of the higher plants of Oregon. 2nd edition. Binsford & Mort, Portland, Oregon. 936 pp.
Skinner, M.W., and B.M. Pavlik, eds. 1994. California Native Plant Society's Inventory of rare and endangered vascular plants of California. 5th edition. California Native Plant Society, Sacramento. 338 pp.
Wilson, B.L., R. Brainerd, M. Huso, K. Kuykendall, D. Lytjen, B. Newhouse, N. Otting, S. Sundberg, and P. Zika. 1999a. Atlas of Oregon <i>Carex</i>. Occasional Paper No. 1, Native Plant Society of Oregon, Corvallis. 29 pp.