Juncus phaeocephalus var. paniculatus
Panicled rush, Panicled Rush
(c) Ken-ichi Ueda, some rights reserved (CC BY), uploaded by Ken-ichi Ueda · licence
Family: Juncaceae · Type: Grass · Native
Juncus phaeocephalus var. paniculatus (Panicled rush) is a native California grass in the Juncaceae family, recognized by many small flower clusters with dark shiny flowers.
Panicled rush is a California native perennial found in northern Coast Ranges, southern Sacramento Valley, central and southern Coast Ranges, San Francisco Bay Area, southern California, San Bernardino Mountains, and Peninsular Ranges in wet coastal and inland habitats at elevations below 2,200 meters. Flowering clusters appear in summer, producing small brownish flower heads generally 5 to 10 millimeters wide. Growing with slender stems 20 to 50 centimeters tall, this rush forms dense, complex inflorescences. Its stems are typically clustered with multiple branching flower clusters, creating a distinctive panicle-like appearance. The plant thrives in moist environments, adapting to both coastal and inland wet areas across southern California's diverse landscapes.
Identification and appearance
Key characters: 58 sympatric species; many small flower clusters with dark shiny flowers
Habitat and range
Habitat: Wet places, coastal, inland
Elevation: < 2200 m
California counties: Contra Costa, Riverside, Marin, San Mateo, Solano, Alameda, Lake, Monterey, Santa Clara, Los Angeles, Orange, San Bernardino, San Diego, Alpine, Sonoma, Santa Barbara, Colusa, Ventura, Mendocino, Napa, Humboldt, Santa Cruz, Plumas, Sacramento, Placer, San Joaquin, Butte, Merced, San Francisco, San Benito
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 phaeocephalus var. paniculatus native to California?
Yes. Juncus phaeocephalus var. paniculatus is native to California (recorded as native).
Where in California does Juncus phaeocephalus var. paniculatus grow?
Juncus phaeocephalus var. paniculatus occurs in Contra Costa, Riverside, Marin, San Mateo, Solano, Alameda, Lake, Monterey and other counties, at elevations of < 2200 m.
What plant family does Juncus phaeocephalus var. paniculatus belong to?
Juncus phaeocephalus var. paniculatus is in the Juncaceae family, genus Juncus.
What habitat does Juncus phaeocephalus var. paniculatus grow in?
Juncus phaeocephalus var. paniculatus grows in Wet places, coastal, inland.
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.