Distribution: Widely distributed on both sides of the Cascades crest in Washington; British Columbia to California, east to the Rocky Mountains and Great Plains.
Habitat: Prairies, balds, sagebrush desert, and forest openings, sea level to mid-elevations in the mountains.
Flowers: April-June
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Apomixis, bumblebees, bees, flies
Glandular-pubescent perennial from slender rhizomes bearing numerous rice-grain bulblets, the stems 10-30 cm. tall, often purplish- or grayish-tinged above.
Leaves mostly basal, with petioles 2-6 cm. long, the blades 1-3 cm. broad, usually cleft to the base into 5 wedge-shaped segments that are bi-ternately to ternately cleft and lobed; cauline leaves 2, sub-sessile, cleft into narrower segments.
Inflorescence a congested raceme at first, becoming up to 15 cm. long, 5- to 11-flowered; calyx obconic, 4-6 mm. long, the 5 lobes triangular-ovate, 1-2 mm. long and broad; petals white to pinkish, 5-10 mm. long, obovate with a wedge-shaped base, digitally 3-cleft, narrowed abruptly to a short, slender claw.
Ovary nearly completely inferior; carpels 3.
PNW Herbaria: Specimen records of Lithophragma parviflorum in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Lithophragma parviflorum checklist entry
OregonFlora: Lithophragma parviflorum information
E-Flora BC: Lithophragma parviflorum atlas page
CalPhotos: Lithophragma parviflorum photos