Epilobium densiflorum

Dense boisduvalia

Family: Onagraceae · Type: annual · Native

Dense boisduvalia is a California native annual found in the California Floristic Province, including montane meadows, streambanks, and seasonal moist flats at elevations up to 2,600 meters. Flowering from May to October, this plant produces delicate rose-purple to white flowers 3 to 10 millimeters long in dense leafy spikes. Growing with slender stems 20 to 150 centimeters tall, it spreads with strigose or spreading hairs and branches primarily in its upper portions. Its leaves are narrow and lanceolate, primarily opposite near the base and measuring 14 to 85 millimeters long, with upper leaves becoming progressively hairier. The fruit is a cylindric, pliable capsule 4 to 11 millimeters long that dehisces to its base, releasing small netted seeds.

Habitat: Streambanks, outwashes, seasonal moist flats

Bloom period: May-Oct

Elevation: < 2600 m

Bioregions: CA-FP (exc SCo, ChI), MP

California counties: Alpine, Los Angeles, San Bernardino, Kern, Tuolumne, Riverside, San Benito, San Diego, Modoc, Tehama, Glenn, Butte, El Dorado, Sacramento, Lake, Nevada, Monterey, Calaveras, Amador, Lassen, Tulare, Plumas, Siskiyou, Fresno, Santa Barbara, San Luis Obispo, Placer, Sonoma, Stanislaus, Marin, Trinity, Sierra, Mariposa, Solano, Mendocino, Shasta, Sutter, Colusa, Yuba, Madera, Alameda, Humboldt, Santa Cruz, Napa, Santa Clara, Contra Costa, San Mateo, Mono, Ventura, Merced, San Joaquin, Yolo

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