Erysimum insulare

Island wallflower

Family: Brassicaceae · Type: perennial · Native

Conservation status: CNPS 1B.3

Island wallflower is a rare (CNPS 1B.3) California native perennial found in the northern Channel Islands in coastal dunes and cliffs at elevations below 300 meters. Flowering from March to May, this plant produces bright yellow flowers 14 to 20 millimeters long with broad petals 4 to 11.5 millimeters wide. Growing as a subshrub with a woody base 20 to 30 centimeters tall, it has slender stems and linear to oblanceolate leaves covered in distinctive two- or three-rayed hairs. Its narrow leaves are 2 to 5 millimeters wide, creating a delicate, sparse foliage structure. The fruit develops as a long, flat pod 2 to 5 centimeters in length, with seeds arranged along a prominent central vein.

Habitat: Coastal dunes, cliffs

Bloom period: Mar-May

Elevation: < 300 m

Bioregions: n ChI.

California counties: San Luis Obispo, Santa Barbara, Ventura

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