Lupinus adsurgens

Drew's silky lupine

Family: Fabaceae · Type: perennial · Native

Drew's silky lupine is a California native perennial found in the northern Coast Ranges, Sierra Nevada, and San Francisco Bay Area (Santa Clara County) on dry slopes and in montane forest at elevations of 500 to 3,500 meters. Flowering from May to July, this plant produces pale yellow to lavender or violet flowers with distinctive yellow to white spots, arranged in open inflorescences 2 to 23 centimeters long. Growing 20 to 60 centimeters tall with erect stems that are hairy and silver to dull green, it develops a robust perennial structure. Its leaves have 6 to 9 leaflets, each 20 to 50 millimeters long and widest above the middle, with stipules 5 to 17 millimeters long. The fruit is silky, 2 to 4 centimeters long, containing 3 to 6 mottled brown seeds.

Habitat: dry slopes, montane forest

Bloom period: May-Jul

Elevation: 500-3500 m

Bioregions: NCoR, SN, SnFrB (Santa Clara Co.)

California counties: Plumas, Butte, Ventura, Tulare, Madera, Kern, Mariposa, Fresno, Tuolumne, Placer, Trinity, El Dorado, San Bernardino, Calaveras, Lake, Amador, Sonoma, Tehama, Glenn, Humboldt, Siskiyou, Mendocino, Santa Clara, Colusa, Shasta, Santa Barbara, Alameda, Nevada, Inyo, Sierra, Orange

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