Erysimum franciscanum
San francisco wallflower, San Francisco Wallflower
Family: Brassicaceae · Type: shrub · Native
Conservation status: CNPS 4.2
San francisco wallflower is a California native shrub ranked 4.2 by CNPS, found in northern coastal California including San Francisco Bay Area and northern central coastal regions in serpentine outcrops, coastal scrub, sand dunes, and granitic hillsides at elevations below 500 meters. Flowering from January to April, this plant produces yellow to cream flowers with petals 14 to 29 millimeters long and 5 to 12 millimeters wide. Growing with woody-based stems 0.6 to 5 meters tall, it displays distinctive multiple-rayed hairs on its foliage. Its leaves are oblanceolate to oblanceolate-linear, 2 to 16 millimeters wide, covered with 2 to 3-rayed hairs. The fruit develops into elongated pods 4 to 11 centimeters long with 32 to 64 narrow-winged seeds.
Habitat: Serpentine outcrops, coastal scrub or sand dunes, granitic hillsides
Bloom period: Jan-Apr
Elevation: < 500 m
Bioregions: NCo, n&c CCo, SnFrB.
California counties: Marin, San Mateo, San Francisco, Santa Cruz, Sonoma, Santa Clara
Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Jepson eFlora, Cal-IPC, and more.