Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to the Rocky Mountains and northern Great Plains in the U.S. and Canada.
Habitat: On rocks or gravel in open, dry areas, from sea level to the alpine.
Conservation Status: Not of concern
Carpels 5, erect, distinct, the styles very short, divergent.
Leaves alternate, linear-lanceolate and terete to ovate and somewhat flattened, not keeled, 5-20 mm. long, mostly deciduous by flowering time.
Follicles 5, erect, united at the base, each with a small gland at the base, and tipped by the erect or divergent, tapered style.
Leaves of flower stems are alternate, terete and not strongly incurved.