Taxon Report

Carex lasiocarpa Ehrh.

woolly-fruited sedge

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Taxon Summary

Carex lasiocarpa, commonly known as woolly-fruited sedge, is a perennial rhizomatous herb in the Cyperaceae that is found in California and elsewhere. It occurs within Bogs and fens, Marshes and swamps (freshwater, and lake margins), growing at elevations from 1700 to 2100 meters. Carex lasiocarpa is ranked 2B.3, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Not very threatened in California.

Classification


Scientific Name:	Carex lasiocarpa Ehrh.
Common Name:	woolly-fruited sedge
Family:	Cyperaceae
Element Code:	PMCYP03720
USDA Plants Symbol:	CALA11
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial rhizomatous herb
Blooming Period: Jun-Jul	Jun-Jul
Elevation:	1700-2100 (5580-6890)
General Habitats:	Bogs and fens, Marshes and swamps
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	2B.3
Global Rank:	G5
State Rank:	S2
State List:	None
Fed List:	None
Other Status:	IUCN_LC
CRPR Changes:	changed from 2.3 to 2B.3 on 2013-06-12

Occurrence Data from the CNDDB


Total Occurrences:	20
Element Occurrence Ranks:
Excellent (A)	9
Good (B)	2
Fair (C)	1
Poor (D)	0
None (X)	0
Unknown (U)	8

Location


California Endemic: False
California Counties and Islands: Name (Code)
Lassen (LAS), Modoc (MOD), Nevada (NEV), Placer (PLA), Plumas (PLU), Shasta (SHA)
Quads: Name (Quad Code)
Antelope Mtn. (4012058), Big Bend (4112118), Blue Canyon (3912036), Chalk Mtn. (4012187), Cisco Grove (3912035), Crescent Mills (4012018), Gold Lake (3912066), Kings Beach (3912021), Little Juniper Reservoir (4112034), Mt. Harkness (4012143), Pegleg Mtn. (4012048), Reading Peak (4012144), Red Cinder (4012142), Shields Creek (4112043), Swain Mountain (4012141)

Threat List Data from the CNDDB


Threat List Total:	4
EOs with Threat Listed:	Total EOs	% of EOs
	5	25 %
Grazing	3	15%
Altered flood/tidal/hydrologic regime	2	10%
Logging	1	5%
Recreational use (non-ORV)	1	5%

Notes



Threatened by grazing, hydrological alterations, and vehicles. On review list in OR.
Threats:

Taxonomy:

Selected References

Carex lasiocarpa account for potential Species of Conservation Concern evaluation (2022)

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 January 2025].