Erysimum asperum (Nuttall) A.P. de Candolle. Prairie Wallflower. Phen: Apr-Jun. Hab: Prairies, limestone outcrops. Dist: MB, SK, and AB south to OK, TX, NM, AZ, and Mexico.
Origin/Endemic status: Native
Synonymy: = F, FNA7, GrPl, K3, K4, NcTx, NY, Tx, Rollins (1993)
Heliophily: 9
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