Erysimum asperum (Nutt.) DC.
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Brassicaceae
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Scientific Name
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Description
Species Description - Erect biennial or short-lived perennial, 2–10 dm; lvs linear to oblanceolate, entire or with a few low teeth; sep 1 cm; pet bright yellow to orange-yellow, 1.5–2.5 cm, the blade half as long as the claw; mature racemes much-elongate, with stout, divergent pedicels 7–15 mm; frs ± spreading, 4–10 cm; 2n=36. Prairies, sand-hills, and open woods; O. to Minn. and Mo., and widespread in w. U.S., rarely adventive farther e. along railroads. May, June. (Cheirinia a.; Erysimum arkansanum) Our plants, representing the Great Plains phase of the sp., are var. asperum.
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Common Names
western wallflower