Lomatium howellii

Howell's lomatium

Family: Apiaceae · Type: perennial · Native

Conservation status: CNPS 4.3

Howell's lomatium is a California native perennial found in the Klamath Ranges of Del Norte and Siskiyou counties in serpentine chaparral and conifer forest at elevations of 150 to 1,000 meters. Flowering from May to June, this plant produces yellow to purplish flowers in broad compound umbels with 8 to 20 spreading rays. Growing 1.2 to 8 decimeters tall with a stout, branched taproot and glaucous, glabrous stems, it forms an elegant herbaceous presence. Its large, intricately divided leaves are ternate-pinnate to 2-pinnate, with leaflets 1 to 3 centimeters wide, generally obovate and sharply dentate with occasional irregular lobing. The fruit is 6 to 14 millimeters long with wings equal in width to the body, bearing 2 to 3 oil tubes per rib-interval.

Habitat: Serpentine in chaparral, conifer forest

Bloom period: May-Jun

Elevation: 150-1000 m

Bioregions: KR (Del Norte, Siskiyou cos.)

California counties: Del Norte, Siskiyou, Tehama, Humboldt, Placer

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