Species Details

Carex stevenii

Steven's sedge

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Species Description:

Carex stevenii, commonly known as Steven's sedge, is a perennial rhizomatous herb in the Cyperaceae that is found in California and elsewhere. It occurs within Alpine boulder and rock field, growing at elevations from 2850 to 3385 meters. Carex stevenii is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.

Classification

Scientific Name: Carex stevenii (T. Holm) Kalela
Common Name: Steven's sedge
Family:	Cyperaceae
Element Code:	PMCYP039D4
USDA Plants Symbol:
Synonyms/Other Names:
Name Status:	JEP, FNA, POWO, IPNI, Tropicos

Conservation Status

CA Rare Plant Rank:	2B.2
Fed List:	None
State List:	None
Global Rank:	G5T4?
State Rank:	S1
Other Status:
CRPR Changes: added to 2.2 on 2011-11-21
Add Date:	2011-11-21
Date Edited:	2023-08-01

Ecology and Life History

Lifeform: perennial rhizomatous herb

Blooming Period: Aug

Elevation:
2850 - 3385 meters
9350 - 11105 feet

General Habitats:

Alpine boulder and rock field

Microhabitat Details: sometimes along creeks, sometimes dry meadows

Microhabitat:

Dry (sometimes)
Streambanks (sometimes)

Notes

Notes: Known in CA only from the White Mtns. All occurrences historical; need field surveys. Previously identified as C. norvegica; see this plant in The Jepson Manual (1993). See American Journal of Science (ser. 4) 16:21-27 (1903) for original description.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	0
	Total EOs	% of EOs
EOs with Threat Listed:	0	%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					2
A	B	C	D	X	U
0	0	0	0	0	2

Occurrence Status:
Historical >20 Years	2
Recent <=20 Years	0

Presence:
Presumed Extant	2
Possibly Extirpated	0
Presumed Extirpated	0

Location

California Endemic:

California Island:

States: Name (Code)
California (CA), Colorado (CO), Idaho (ID), Montana (MT), New Mexico (NM), Utah (UT), Wyoming (WY)

California Counties and Islands: Name (Code)
Mono (MNO)

Quads: Name (Quad Code)
Boundary Peak (3711873), White Mtn. Peak (3711863)

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