Taxon Report

Carex buxbaumii Wahlenb.

Buxbaum's sedge

Print Report

Taxon Summary

Carex buxbaumii, commonly known as Buxbaum's sedge, is a perennial rhizomatous herb in the Cyperaceae that is found in California and elsewhere. It occurs within Bogs and fens, Marshes and swamps, and Meadows and seeps (mesic), growing at elevations from 3 to 3300 meters. Carex buxbaumii is ranked 4.2, Plants of Limited Distribution, A Watch List; Moderately threatened in California.

Classification


Scientific Name:	Carex buxbaumii Wahlenb.
Common Name:	Buxbaum's sedge
Family:	Cyperaceae
Element Code:	PMCYP032B0
USDA Plants Symbol:	CABU6
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial rhizomatous herb
Blooming Period: Mar-Aug	Mar-Aug
Elevation:	3-3300 (10-10825)
General Habitats:	Bogs and fens, Marshes and swamps, Meadows and seeps
Microhabitat:
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	4.2
Global Rank:	G5
State Rank:	S3
State List:	None
Fed List:	None
Other Status:
CRPR Changes:

Occurrence Data from the CNDDB


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

Location


California Endemic: False
California Counties and Islands: Name (Code)
Humboldt (HUM), Inyo (INY), Madera (MAD), Marin (MRN), Mariposa (MPA), Plumas (PLU), Siskiyou (SIS), Tuolumne (TUO)
Quads: Name (Quad Code)
Canyondam (4012121), Crescent Mills (4012018), Drakes Bay (3812218), El Capitan (3711966), Falls Ridge (3711984), Half Dome (3711965), Lake Eleanor (3711987), Lake Elsinore (3311763), Mariposa Grove (3711955), Mt. Morgan (3711846), Rodgers Peak (4112421), Seven Lakes Basin (4112224), Tioga Pass (3711983), Trinidad (4112412), Twain (4012111), Vogelsang Peak (3711973)

Threat List Data from the CNDDB


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

Notes



Threatened by foot traffic. Similar to C. limosa.
Threats:

Taxonomy:

Selected References

Carex buxbaumii account for potential Species of Conservation Concern evaluation (2022)

Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 26 February 2025].