Taxon Details

Carex scirpoidea ssp. pseudoscirpoidea

western single-spiked sedge

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Taxon Summary:

Carex scirpoidea ssp. pseudoscirpoidea, commonly known as western single-spiked sedge, is a perennial rhizomatous herb in the Cyperaceae that is found in California and elsewhere. It occurs within Alpine boulder and rock field, Meadows and seeps, and Subalpine coniferous forest (rocky), growing at elevations from 2990 to 3700 meters. Carex scirpoidea ssp. pseudoscirpoidea is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Carex scirpoidea Michx. ssp. pseudoscirpoidea (Rydb.) D.A. Dunlop
Common Name: western single-spiked sedge
Family:	Cyperaceae
Element Code:	PMCYP03C85
USDA Plants Symbol:	CASCP3
Synonyms/Other Names:
Name Status:	JEF, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	2B.2
Fed List:	None
State List:	None
Global Rank:	G5T5
State Rank:	S2
Other Status:
CRPR Changes:
Add Date:	2001-01-01
Date Edited:	2022-08-02

Ecology and Life History

Lifeform: perennial rhizomatous herb

Blooming Period: Jul-Sep

Elevation:
2990 - 3700 meters
9810 - 12140 feet

General Habitats:

Alpine boulder and rock field
Meadows and seeps
Subalpine coniferous forest (rocky)

Microhabitat Details:

Microhabitat:

Carbonate (often)
Mesic

Notes

Notes: Possibly threatened by grazing. See Memoirs of the New York Botanical Garden 1:78 (1900) for original description and Novon 7:355-356 (1997) for revised nomenclature.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	1
	Total EOs	% of EOs
EOs with Threat Listed:	1	9 %
ORV activity	1	9%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					11
A	B	C	D	X	U
0	0	1	0	0	10

Occurrence Status:
Historical >20 Years	11
Recent <=20 Years	0

Presence:
Presumed Extant	11
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Colorado (CO), Idaho (ID), Montana (MT), Nevada (NV), Oregon (OR), Utah (UT), Washington (WA), Wyoming (WY)

California Counties and Islands: Name (Code)
Alpine (ALP), Inyo (INY), Mono (MNO), Tuolumne (TUO)

Quads: Name (Quad Code)
Caples Lake (3812061), Convict Lake (3711857), Coyote Flat (3711824), Crestview (3711878), Mount Dana (3711982), Mt. Barcroft (3711852), Mt. Morgan (3711846), Toms Place (3711856)

Notes:

Definitions of codes following a county and/or quad:
*		Presumed extirpated
(?)		Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Regional Map

Map

Presumed Extant

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CNPS Rare Plant Inventory