Page author: Don Knoke
Lithospermum ruderale
western gromwell, Columbian puccoon, western stoneseed
WTU specimens
Other herbaria

Distribution: Common east of the Cascades in southern British Columbia, Washington and Oregon

Habitat: Shrub-steppe to open, dry areas in the mountains at mid-elevations

Flowers: April - June

Origin: Native

Conservation Status: Not of concern


Appressed-hairy perennial from a coarse, woody taproot, the several clustered stems 2-6 dm. tall.


Leaves all cauline, the lowermost reduced, the others numerous, sessile, lanceolate to linear, 3-10 cm. long and 2-10 mm. wide.


Flowers in small, leafy-bracteate clusters in the axils of the short, upper branches; calyx deeply cleft; corolla pale yellow, often tinged with green, 8-13 mm. long, the 5 lobes entire, the limb 7-13 mm. wide; style short; nutlets basally attached.


Nutlets smooth, shining, gray, 3.5-6 mm. long, with a ventral keel, often only 1 or 2 of the 4 developed.

Accepted Name:
Lithospermum ruderale Douglas ex Lehm.
Publication: Nov. Stirp. Pug. 2: 28. 1830.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Lithospermum ruderale in the Consortium of Pacific Northwest Herbaria database.

WA Flora Checklist: Lithospermum ruderale checklist entry.

E-Flora BC: Lithospermum ruderale atlas page.

CalPhotos: Lithospermum ruderale photos.

USDA Plants: Lithospermum ruderale information.

60 photographs:
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