Juncus drummondii
Drummond's rush
(c) Jim Morefield, some rights reserved (CC BY) · licence
Family: Juncaceae · Type: Grass · Native
Juncus drummondii (Drummond's rush) is a native California grass in the Juncaceae family, recognized by . Key features: no leaf blades, lateral inflorescence, seed appendages > body.
Drummond's rush is a California native perennial found in the Klamath Ranges, Cascade Range, and Sierra Nevada in moist, rocky places within conifer forests at elevations of 2,000 to 3,500 meters. The plant forms dense, compact clusters of stems 5 to 40 centimeters tall with pale leaf sheaths and minimal blade-like leaves. Growing with a distinctive clustered habit, this rush has very short inner bristle-like leaves and produces small flowers typically arranged in groups of 2 to 3. Its perianth measures 5 to 7 millimeters long, with sepals that are wider than the petals and 6 stamens with short filaments. The fruit extends beyond the perianth and features a notched or truncate tip, with tiny seeds measuring just 0.5 millimeters in length.
Identification and appearance
Key characters: 52 sympatric species. Key features: no leaf blades, lateral inflorescence, seed appendages > body
Habitat and range
Habitat: Moist, rocky places in conifer forest
Elevation: 2000-3500 m
California counties: Mono, Madera, Alpine, Fresno, Inyo, Modoc, Placer, Shasta, Siskiyou, Trinity, Tulare, Tuolumne, Amador, Butte, Sierra, Plumas, Calaveras, El Dorado, Mariposa, Del Norte, Nevada
Outside California: to Alaska, Northwest Territories, Colorado, New Mexico
How to tell it apart
vs Schoenoplectus: Juncus has leaf blades present; Schoenoplectus is leafless with only bladeless sheaths at base.; vs Carex: Juncus has round or flattened stems; Carex has triangular stems you can feel.; vs Luzula: Run finger along leaf edge - smooth = Juncus, hairy = Luzula.; vs Elegia: Juncus has small individual flowers; Elegia has showy papery bracts and branching structure.; vs Cyperus: Juncus has round stems and capsules; Cyperus has triangular stems and lens-shaped achenes.
Frequently asked questions
Is Juncus drummondii native to California?
Yes. Juncus drummondii is native to California (recorded as native).
Where in California does Juncus drummondii grow?
Juncus drummondii occurs in Mono, Madera, Alpine, Fresno, Inyo, Modoc, Placer, Shasta and other counties, at elevations of 2000-3500 m.
What plant family does Juncus drummondii belong to?
Juncus drummondii is in the Juncaceae family, genus Juncus.
What habitat does Juncus drummondii grow in?
Juncus drummondii grows in Moist, rocky places in conifer forest.
Related species
Other California species in the same genus, family, or bioregion.
Sources: Jepson eFlora · Index of California Plant Names · CalPhotos
Last updated 2026-10-07
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.