Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east to Wisconsin and New Mexico.

Habitat: Moist areas, foothills to mid-elevations in the mountains, seldom in alkaline areas.

Flowers: May-August

Origin: Native

Growth Duration: Annual

Conservation Status: Not of concern

Pollination: Bees, flies

Appressed-hairy annual from a taproot, or fibrous-rooted, the several stems prostrate to ascending, up to 20 cm. long.

Leaves all cauline, linear, up to 6.5 cm. long and 5 mm. wide, the lower 1-4 pairs opposite, the others alternate.

Flowers in loose spikes terminating the branches, often leafy-bracteate below to near the base; calyx 2-4 mm. long with 5 lanceolate lobes; corolla tube narrow, the 5 lobes abruptly spreading, the limb 1-4 wide, white; hairy appendages opposite the corolla lobes at the top of the tube; nutlets mostly attached to the style in a small area near the base.

Nutlets ovate, 1–1.5 mm, granular to tuberculate, with abaxial transverse ridges, attachment scar basal, ovate.