Lomatium linearifolium
linear-leaved biscuit-root, linear-leaved desert-parsley, linear-leaved lomatium, turkey peas

Distribution: Occurring east of the Cascades crest in Washington; central Washington to north-central Oregon, east to Montana and Wyoming.

Habitat: Open slopes and ridges, from low to middle elevations.

Flowers: March-May

Origin: Native

Growth Duration: Perennial

Conservation Status: Not of concern

Pollination: Bees, flies, butterflies, beetles, wasps


Delicate, scapose perennial from a tuberous-thickened root, the leaves nearly prostrate and the scape only a few cm. high.


Leaves basal, usually 2 or 3, biternate, the ultimate segments 1-4.5 cm. long and 0.5-4 mm. wide. The globose root up 1.5 cm. thick, and seated 2-7 cm. below the surface of the ground.


Inflorescence a compact, compound umbel, longer than wide, the few, unequal, spreading rays 1-2 cm. long; involucre and involucel wanting; calyx teeth obsolete; petals white, the anthers dark purple; pedicels up to 2 mm. long.


Fruit glabrous, oblong-elliptic, 3-4 mm. long, the lateral wings corky and bent down, the dorsal wings evident; stylopodium wanting.

Accepted Name:
Lomatium linearifolium (S.Watson) J.F. Smith & Mansfield
Publication: Phytotaxa 316(1): 96. 2017.

Synonyms & Misapplications:
Orogenia linearifolia S. Watson [HC, IMF3]
Orogenia linearifolia S. Watson var. lata Payson
Additional Resources:

PNW Herbaria: Specimen records of Lomatium linearifolium in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Lomatium linearifolium checklist entry.

OregonFlora: Lomatium linearifolium information.

E-Flora BC: Lomatium linearifolium atlas page.

CalPhotos: Lomatium linearifolium photos.

USDA Plants: Lomatium linearifolium information.

17 photographs:
Group by