Triglochin striata

Three-ribbed arrow-grass

Family: Juncaginaceae · Type: perennial · Native

Three-ribbed arrow-grass is a California native perennial found in northern coastal, central coastal, and northern southern coastal bioregions in brackish to freshwater coastal marshes and springs at elevations below 30 meters. Flowering from May to September, this plant produces small greenish-white flowers in aerial racemes that can exceed leaf length. Growing as a mat-forming herb with slender spreading rhizomes, it reaches 10 to 40 centimeters tall with thin, nearly elliptical leaves approximately 1 to 2 millimeters wide. Its leaves are 5 to 20 centimeters long with rounded to pointed ligules, characteristic of its delicate marsh-dwelling nature. The fruit consists of three distinct mericarps, each 1 to 1.5 millimeters long with strong three-keeled surfaces.

Habitat: Uncommon. Brackish to freshwater coastal marshes, springs

Bloom period: May-Sep

Elevation: < 30 m

Bioregions: NCo, CCo, n SCo

California counties: Santa Barbara, Monterey, Ventura, Mendocino, Humboldt, San Luis Obispo, Contra Costa, Marin, Santa Cruz, Sonoma, Del Norte, Alameda

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