Epilobium rigidum

Siskiyou mountains willowherb, Siskiyou Mountains Willowherb

Family: Onagraceae · Type: perennial · Native

Conservation status: CNPS 4.3

Siskiyou mountains willowherb is a California native perennial found in the northwestern Klamath Ranges of Del Norte County in dry, open places and streambeds at elevations of 100 to 1,200 meters. Flowering from July to September, this plant produces delicate pink to rose-purple flowers with petals 16 to 20 millimeters long. Growing with ascending wiry shoots 10 to 40 centimeters tall, it forms clumps from a woody caudex with stems that peel proximally and become finely hairy toward the tips. Its leaves are approximately obovate, 20 to 45 millimeters long, nearly glabrous with short 2 to 6 millimeter petioles and nearly entire margins. The slender fruit is club-like, 20 to 35 millimeters long and covered in fine strigose hairs.

Habitat: Dry, open places, dry streambeds, sometimes on serpentine-like soils

Bloom period: Jul-Sep

Elevation: 100-1200 m

Bioregions: nw KR (Del Norte Co.)

California counties: Del Norte

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