Juncus oxymeris
Pointed rush
(c) Steve Matson, some rights reserved (CC BY), uploaded by Steve Matson · licence
Family: Juncaceae · Type: Grass · Native
Juncus oxymeris (Pointed rush) is a native California grass in the Juncaceae family, recognized by very large open inflorescence and sharp-pointed flowers with colored tips.
Pointed rush is a California native perennial found in the Klamath Ranges, northern coastal ranges, California Reef, Sierra Nevada, Central Valley, Transverse Ranges, and Peninsular Ranges in swales, montane meadows, and damp, sunny ground at elevations below 2,100 meters. The plant produces green to light brown flowers with reddish to purple tips, developing in open clusters with ascending branches extending 15 to 30 centimeters. Growing with a creeping rhizome, this rush forms robust stems 30 to 150 centimeters tall with distinctively flat leaves 3 to 7 millimeters wide. Its leaves have overlapping bases with inconspicuous sheaths, spreading edge-on toward the stem. The fruit develops longer than the perianth, with a three-angled shape gradually tapering to a slender brown beak.
Identification and appearance
Key characters: 64 sympatric species; very large open inflorescence and sharp-pointed flowers with colored tips
Habitat and range
Habitat: Uncommon. Swales, montane meadows, damp, sunny ground
Elevation: < 2100 m
California counties: Mendocino, Fresno, Los Angeles, Alameda, Butte, El Dorado, Inyo, Lake, Nevada, Placer, San Bernardino, Santa Cruz, Sonoma, Tuolumne, Madera, San Diego, Mariposa, Merced, Napa, Riverside, Santa Clara, Trinity, Kern, Orange, San Luis Obispo, Amador, Sacramento, Kings, Sutter, Solano, Sierra, Tehama, Plumas, Glenn, Colusa, Yuba, Shasta, Stanislaus, Santa Barbara, Contra Costa, Tulare, Yolo, Humboldt, Del Norte, Ventura
Outside California: to southwestern British Columbia
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 oxymeris native to California?
Yes. Juncus oxymeris is native to California (recorded as native).
Where in California does Juncus oxymeris grow?
Juncus oxymeris occurs in Mendocino, Fresno, Los Angeles, Alameda, Butte, El Dorado, Inyo, Lake and other counties, at elevations of < 2100 m.
What plant family does Juncus oxymeris belong to?
Juncus oxymeris is in the Juncaceae family, genus Juncus.
What habitat does Juncus oxymeris grow in?
Juncus oxymeris grows in Uncommon. Swales, montane meadows, damp, sunny ground.
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.