Blooms: April-June
Habit: herb
Duration: perennial
Origin: Native
Conservation Status: Abundant; of no concern.

Distribution: Widely distributed throughout much of Washington; British Columbia south to California, east to the Rocky Mountains and to the Great Plains of Canada.
Habitat: Common in deeper soil in shrub-steppe; occasional in mountain meadows.

Species Description:

General: Robust perennial from a very large, woody taproot, the several ascending, glabrous stems 5-15 dm. tall.
Leaves: Both basal and cauline leaves large and somewhat roughened, ternate-pinnately dissected into small, narrow ultimate segments up to 1 cm. long.
Flowers: Inflorescence a compound umbel, the rays 10-30, usually about equal, 4-10 cm. long at maturity; involucre none; involucel of well-developed narrow bractlets; calyx teeth obsolete; flowers brownish-purple or yellow (the two color forms rarely found together), some of them always sterile.
Fruits: Fruit elliptic, 8-17 mm. long and 4.5-10 mm. wide, the lateral wings narrow and thickened, up to 1 mm. wide, the dorsal ribs inconspicuous.

Subspecies & Varieties:

Lomatium dissectum (Nutt.) Mathias & Constance

Treated in Flora of the PNW as:

PNW Herbaria Specimens: View list of Lomatium dissectum specimens in the Consortium of Pacific Northwest Herbaria database.

WTU Herbarium Specimens: View list of Lomatium dissectum specimens in the WTU Herbarium database.

Washington Flora Checklist: Lomatium dissectum treatment.

E-Flora BC: Lomatium dissectum atlas page.

CalPhotos: Lomatium dissectum images.

USDA Plants Database: Lomatium dissectum.