Herbs glabrous or sparsely strigose, hairs simple, antrorse, to 0.5 mm. Stems erect, branch­ing frequently at distal nodes, 1–6 dm. Leaf blades narrowly ovate-lanceolate to lan­ceolate, 2.5–7.5 × 0.5–2.5 cm. Flowers: corolla 10–20 mm; anthers yellow. 2n = 24.

Phenology: Flowering May–Oct.
Habitat: Fields, open woods, sandy areas, disturbed sites, sagebrush and pinyon-juniper communities.
Elevation: 200–2700 m.

Distribution

• Generated Map
• Legacy Map

B.C., Ariz., Ark., Calif., Colo., Idaho, Ill., Iowa, Kans., Mich., Minn., Miss., Mo., Mont., Nebr., Nev., N.Mex., Okla., Oreg., S.Dak., Tex., Utah, Wash., Wis., Wyo., Mexico (Chihuahua, Coahuila, Hidalgo, San Luis Potosí, Sonora), introduced in Australia.

Discussion

Variety longifolia is widespread in the United States from the prairie states westward. In the westernmost states, its distribution is restricted (Lincoln County, Nevada; Siskiyou County, California; Baker, Malheur, and Wallowa counties in Oregon; Asotin County, Washington), and these plants are slightly smaller than in the rest of the range. It reportedly does not persist in British Columbia.

Selected References

None.

Lower Taxa

None.