Blooms: April - July
Habit: herb
Duration: perennial
Origin: Native
Conservation Status: Sensitive
Distribution: Near the Snake River Canyon, western Idaho, eastern Oregon and extreme southeast Washington.
Habitat: Open, often rocky slopes.
Habit: herb
Duration: perennial
Origin: Native
Conservation Status: Sensitive
Distribution: Near the Snake River Canyon, western Idaho, eastern Oregon and extreme southeast Washington.
Habitat: Open, often rocky slopes.
Species Description:
General: Glabrous, acaulescent, parsley-scented perennial from a stout taproot and branching, woody base, 1.5-4 dm. tall.
Leaves: Leaves bright green, ternate-pinnately dissected into moderately numerous, small, flat ultimate segments 1-6 mm. long and up to 2.5 mm. wide, the segments tending to lie in the same plane.
Flowers: Inflorescence of compound umbels, the rays unequal, 2-8 cm. long at maturity; involucre wanting; involucel of several well-developed, narrow bractlets; calyx teeth none; flowers yellow; pedicels 3-15 mm. long.
Fruits: Fruit elliptic, 5.5-10 mm. long, glabrous, the lateral wings one-half as wide to as wide as the body.
General: Glabrous, acaulescent, parsley-scented perennial from a stout taproot and branching, woody base, 1.5-4 dm. tall.
Leaves: Leaves bright green, ternate-pinnately dissected into moderately numerous, small, flat ultimate segments 1-6 mm. long and up to 2.5 mm. wide, the segments tending to lie in the same plane.
Flowers: Inflorescence of compound umbels, the rays unequal, 2-8 cm. long at maturity; involucre wanting; involucel of several well-developed, narrow bractlets; calyx teeth none; flowers yellow; pedicels 3-15 mm. long.
Fruits: Fruit elliptic, 5.5-10 mm. long, glabrous, the lateral wings one-half as wide to as wide as the body.
Accepted Name:
Lomatium serpentinum (M.E. Jones) MathiasSynonyms:
Cogswellia fragrans
Treated in Flora of the PNW as:
Lomatium serpentinum
Additional Resources:
PNW Herbaria Specimens: View list of Lomatium serpentinum specimens in the Consortium of Pacific Northwest Herbaria database.
WTU Herbarium Specimens: View list of Lomatium serpentinum specimens in the WTU Herbarium database.
Washington Flora Checklist: Lomatium serpentinum treatment.
E-Flora BC: Lomatium serpentinum atlas page.
CalPhotos: Lomatium serpentinum images.
USDA Plants Database: Lomatium serpentinum.
Tracy Rush
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