Juncus hemiendytus
Herman's dwarf rush
Family: Juncaceae · Type: Grass · Native
Juncus hemiendytus (Herman's dwarf rush) is a native California grass in the Juncaceae family.
Herman's dwarf rush is a California native annual found in low-growing, cespitose clusters typically less than 3.2 centimeters tall. Flowering with tiny, inconspicuous blooms from early to late spring, this diminutive rush produces dull, pale perianth parts measuring 1.9 to 3.5 millimeters long. Growing with extremely slender stems less than 0.5 millimeters wide, it forms dense, compact tufts with short basal leaves under 1.8 centimeters in length. Its leaves lack sheath appendages, with 1 to 2 tiny ovate bracts near the single flower per stem. The fruit is obovoid to oblong, ranging from slightly smaller to slightly larger than the perianth, with 2 to 3 chambers containing small seeds approximately 0.3 to 0.55 millimeters long.
Identification and appearance
Key characters: 0 sympatric species; geographically isolated
Habitat and range
California counties: Trinity, San Bernardino, Riverside, Sierra, Nevada, Plumas, Butte, Mendocino, Napa, Colusa, Monterey, Yuba, Madera
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 hemiendytus native to California?
Yes. Juncus hemiendytus is native to California (recorded as native).
Where in California does Juncus hemiendytus grow?
Juncus hemiendytus occurs in Trinity, San Bernardino, Riverside, Sierra, Nevada, Plumas, Butte, Mendocino and other counties.
What plant family does Juncus hemiendytus belong to?
Juncus hemiendytus is in the Juncaceae family, genus Juncus.
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.