Juncus supiniformis

Hair-leaved rush

Family: Juncaceae · Type: perennial · Native

Conservation status: CNPS 2B.2

Hair-leaved rush is a rare (CNPS 2B.2) California native perennial found in northern coastal California, specifically Mendocino County, in marshes and ponds at elevations generally below 100 meters. Flowering in spring and summer, this rush produces small flowers in compact clusters of 3 to 9 blossoms. Growing 8 to 40 centimeters tall, it forms matted clusters with slender, spreading rhizomes and stems that can root at nodes and generate new plantlets. Its distinctive leaves are hair-like when submerged, with cylindrical cauline blades that exceed the stem length and feature complete crosswalls. When water recedes, the rush produces erect flowering stems with narrow lanceolate perianth parts measuring 3.4 to 5.4 millimeters long.

Habitat: Marshes, ponds

Elevation: generally < 100 m

Bioregions: NCo (Mendocino Co.)

Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Jepson eFlora, Cal-IPC, and more.