Taxon Report

Carex lenticularis Michx. var. limnophila (Holm) Cronq.

lagoon sedge

Print Report

Taxon Summary

Carex lenticularis var. limnophila, commonly known as lagoon sedge, is a perennial herb in the Cyperaceae that is found in California and elsewhere. It occurs within Bogs and fens, Marshes and swamps, and North Coast coniferous forest, growing at elevations from 0 to 6 meters. Carex lenticularis var. limnophila is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.

Classification


Scientific Name:	Carex lenticularis Michx. var. limnophila (Holm) Cronq.
Common Name:	lagoon sedge
Family:	Cyperaceae
Element Code:	PMCYP037A7
USDA Plants Symbol:	CALEL2
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: Jun-Aug	Jun-Aug
Elevation:	0-6 (0-20)
General Habitats:	Bogs and fens, Marshes and swamps, North Coast coniferous forest
Microhabitat:	Gravelly (often)
Microhabitat Details:	shores, beaches

Conservation Status


CA Rare Plant Rank:	2B.2
Global Rank:	G5T5
State Rank:	S1
State List:	None
Fed List:	None
Other Status:
CRPR Changes:	changed from 2.2 to 2B.2 on 2004-11-22

Occurrence Data from the CNDDB


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

Location


California Endemic: False
California Counties and Islands: Name (Code)
Del Norte (DNT), Humboldt (HUM), Mendocino (MEN)
Quads: Name (Quad Code)
Crescent City (4112472), Noyo Hill (3912346), Orick (4112431), Rodgers Peak (4112421), Sister Rocks (4112462), Trinidad (4112412)

Threat List Data from the CNDDB


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

Notes



Disjunct specimen (Collette #22 DAV) collected from Knight's Landing in Yolo Co. needs verification. See American Journal of Science (Ser. 4) 17:307 (1904) for original description, and Vascular Plants of the Pacific Northwest 1:279 (1969) for revised nomenclature.
Threats:

Taxonomy:

Selected References

Proposed Addition to CRPR 2 (2004)

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 October 2025].