About Diplacus clevelandii (Brandegee) Greene
Diplacus clevelandii is a sturdy perennial herb. It grows an erect hairy stem up to 90 centimeters tall from a woody caudex. Its leaves are hairy, lance-shaped or oblong, oppositely arranged, and up to 10 centimeters long. Smaller leaves often grow in the axils of the larger leaves. Each flower has a tubular base enclosed in a hairy calyx of sepals. This calyx is over 2 centimeters long and has long, pointed lobes. The flower corolla is bright yellow, up to 4 centimeters long, and has a wide five-lobed mouth. This species blooms from April to June. Diplacus clevelandii is endemic to the Peninsular Ranges of southern California and northern Baja California. It grows in chaparral and oak woodland habitats, including disturbed areas. It is listed as a Vulnerable species on the California Native Plant Society Inventory of Rare and Endangered Plants.