Distribution: East of the Cascades in Washington; adjacent Idaho, east through the Columbia River Gorge to the Wilamette Valley of Oregon, and south to California.
Habitat: Moist, open places, often on disturbed soil.
Growth Duration: Annual
Conservation Status: Review Group 1 in Washington (WANHP)
Taprooted annual, the stem 1-5 dm. tall, simple or branched below, pubescent throughout with mixed short and long, spreading hairs.
Leaves opposite, entire, short-petiolate, not crowded, the blades broadly elliptic, 1.5-5 cm. long and 5-20 mm. wide.
Flowers in short, compact, one-sided, raceme-like, axillary cymes; calyx regular, 5-lobed, 1.5-3 mm. long; corolla tube 2-3.5 mm. long, slightly upcurved, scarcely exerted from the calyx; corolla irregular, violet, the lowest lobe 2-3.5 mm. long and nearly white, the other 4 about half as long and equal; stamens 4, exerted between the upper two corolla lobes, curved, 2.5-6 mm. long.
4 nutlets, united about 1/3 their length.