Carex holmgreniorum
Holmgrens sedge
(c) Steve Matson, some rights reserved (CC BY) · licence
Family: Cyperaceae · Type: Perennial · Native
Conservation status: CNPS 2B.2
Carex holmgreniorum (Holmgrens sedge) is a native California perennial in the Cyperaceae family.
Holmgrens sedge is a California native perennial rhizomatous herb found in the Great Basin bioregion in meadows, seeps, and playas, typically in alkaline meadows with a shallow water table, at around 1,275 meters elevation. It flowers from May to September.
Habitat and range
Habitat: Meadows and seeps, playas; alkaline meadow with shallow water table
Elevation: 1275 m
Outside California: CO, ID, NV, UT
Bloom period
Carex holmgreniorum blooms May-Sep.
Conservation status
CNPS 2B.2
How to tell it apart
vs Juncus: Carex stems are triangular when rolled; Juncus stems are round and often hollow with partitions inside.; vs Cyperus: Carex has seeds in individual flasks; Cyperus has umbrella-like flower clusters with flattened ribbon-like spikes.; vs Plantago: Carex has triangular stems and brown/green spikelets; Plantago has round flower stalks and white/brown spike flowers.; vs Eleocharis: Carex has leaves along the stem; Eleocharis is nearly leafless with just one spikelet per stem.; vs Schoenoplectus: Carex has leafy stems and flask-enclosed seeds; Schoenoplectus has leafless round stems with exposed seeds.
Frequently asked questions
Is Carex holmgreniorum native to California?
Yes. Carex holmgreniorum is native to California (recorded as native).
When does Carex holmgreniorum bloom?
Carex holmgreniorum blooms May-Sep.
What plant family does Carex holmgreniorum belong to?
Carex holmgreniorum is in the Cyperaceae family, genus Carex.
Is Carex holmgreniorum rare or endangered?
Carex holmgreniorum carries California Rare Plant Rank 2B.2, state rank S1.
What habitat does Carex holmgreniorum grow in?
Carex holmgreniorum grows in Meadows and seeps, playas; alkaline meadow with shallow water table.
Related species
Other California species in the same genus, family, or bioregion.
Last updated 2026-09-30
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.