Distribution: Chiefly east of the Cascades in Washington; southern British Columbia to south to California, east to Colorado and Montana.
Habitat: Wooded slopes, thickets, and less often in open places, from the foothills to moderate elevations in the mountains.
Conservation Status: Not of concern
Delicate annual from a taproot, the stem usually branched, weak, angled, 1-3 dm. tall.
Leaves alternate, thin, stiff-hairy, especially on the margins and on the petiole; leaf blades with a narrow rachis and 2 pairs of spreading, lateral lobes, these up to 2 cm. long and 7 mm. wide.
Flowers solitary in the leaf axils, the pedicels opposite the leaves, elongating to 5-15 mm. in fruit; flowers tiny, the lavender, cup-shaped corolla 2 mm. long, surpassed by the 5 bristly calyx lobes; appendages between the calyx lobes 1-2 mm. long; stamens 5, the filaments short; style short, shallowly 2-cleft.