Western Wallflower (Sand-Dune Wallflower, Plains Wallflower)
June 1, 1806, at Camp Chopunnish, Idaho County, Idaho.
Erect stems, unbranched or branched in the upper parts, with narrow leaves, end in a dense raceme of showy orange, burnt orange, or orange-maroon, or yellow flowers. Flowers about 0.8 in (2 cm) wide. Leaves 1-5 in (2.5-12.5 cm) long. Height: 6-36 in (15-90 cm).
Dry stony banks, slopes, open flats, open hills, and plains.
Across the southern half of Canada and south throughout the western and central United States; absent from eastern seaboard and Deep South states.