Taxon Report

Carex comosa Boott

bristly sedge

Print Report

Dean Wm. Taylor 1997

Classification


Scientific Name:	Carex comosa Boott
Common Name:	bristly sedge
Family:	Cyperaceae
Element Code:	PMCYP032Y0
USDA Plants Symbol:	CACO8
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial rhizomatous herb
Blooming Period: May-Sep	May-Sep
Elevation:	0-625 (0-2050)
General Habitats:	Coastal prairie, Marshes and swamps, Valley and foothill grassland
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	2B.1
Global Rank:	G5
State Rank:	S2
State List:	None
Fed List:	None
Other Status:	IUCN_LC
CRPR Changes:	changed from 2.1 to 2B.1 on 2013-06-12

Occurrence Data from the CNDDB


Total Occurrences:	32
Element Occurrence Ranks:
Excellent (A)	1
Good (B)	7
Fair (C)	11
Poor (D)	0
None (X)	4
Unknown (U)	9

Location


California Endemic: False
California Counties and Islands: Name (Code)
Contra Costa (CCA), Fresno (FRE), Lake (LAK), Mendocino (MEN), Sacramento (SAC), San Bernardino (SBD), San Francisco (SFO), San Joaquin (SJQ), San Mateo (SMT), Santa Cruz (SCR), Shasta (SHA), Sonoma (SON)
Quads: Name (Quad Code)
Big Bend (4112118), Bodega Head (3812331), Bouldin Island (3812115), Bruceville (3812134), Camp Meeker (3812248), Cazadero (3812351), Chalk Mtn. (4012187), Clarksburg (3812145), Courtland (3812135), Cow Mountain (3912321), Davenport (3712212), Duncans Mills (3812341), Fall River Mills (4112114), Felton (3712211), Guerneville (3812258), Holt (3712184), Hopland (3812381), Hunters Point (3712263), Laurel (3712118), Oakland West (3712273), Point Bonita (3712275), Roaring Creek (4012188), San Bernardino South (3411713)?*, San Francisco North (3712274), San Francisco South (3712264), Sanger (3611965), Timbered Crater (4112124), Upper Lake (3912228)

Threat List Data from the CNDDB


Threat List Total:	8
EOs with Threat Listed:	Total EOs	% of EOs
	14	44 %
Non-native plant impacts	7	21%
Development	4	12%
Agriculture	3	9%
Biocides	1	3%
Foot traffic/trampling	1	3%
Grazing	1	3%
Other	1	3%
Road/trail construction/maint.	1	3%

Notes



Location, rarity, and endangerment information needed; need historical quads for SFO Co. Fairly widely distributed, but apparently rarely collected. Threatened by marsh drainage and road maintenance. Endangered in ID, endangered in OR, and state-listed as Sensitive in WA.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 29 December 2024].