Taxon Report

Kobresia myosuroides (Vill.) Fiori & Paol.

seep kobresia

Print Report

Taxon Summary

Kobresia myosuroides, commonly known as seep kobresia, is a perennial rhizomatous herb in the Cyperaceae that is found in California and elsewhere. It occurs within Alpine boulder and rock field (mesic), Meadows and seeps (carbonate), and Subalpine coniferous forest, growing at elevations from 1490 to 3245 meters. Kobresia myosuroides is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.

Classification


Scientific Name:	Kobresia myosuroides (Vill.) Fiori & Paol.
Common Name:	seep kobresia
Family:	Cyperaceae
Element Code:	PMCYP0F010
USDA Plants Symbol:	KOMY
Synonyms/Other Names:	Kobresia bellardii

Ecology and Life History


Lifeform:	perennial rhizomatous herb
Blooming Period: (Jun)Aug	(Jun)Aug
Elevation:	1490-3245 (4890-10645)
General Habitats:	Alpine boulder and rock field, Meadows and seeps, Subalpine coniferous forest
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	2B.2
Global Rank:	G5
State Rank:	S2
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	changed from 2.2 to 2B.2 on 2013-06-12 changed from 2.3 to 2.2 on 2012-11-06

Occurrence Data from the CNDDB


Total Occurrences:	10
Element Occurrence Ranks:
Excellent (A)	1
Good (B)	1
Fair (C)	2
Poor (D)	1
None (X)	0
Unknown (U)	5

Location


California Endemic: False
California Counties and Islands: Name (Code)
Mono (MNO), Sierra (SIE)
Quads: Name (Quad Code)
Big Alkali (3811922), Calpine (3912064), Chris Flat (3811944), Convict Lake (3711857), Dunderberg Peak (3811913), Fales Hot Springs (3811934)

Threat List Data from the CNDDB


Threat List Total:	2
EOs with Threat Listed:	Total EOs	% of EOs
	3	30 %
Grazing	2	20%
Foot traffic/trampling	1	10%

Notes



Threatened by recreational activities and grazing. On review list in ID, and endangered in OR. See Madroño 17(4):93-109 (1964) and 40(1):66-67 (1993) for first and second CA reports respectively
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 11 November 2025].