western wall flower Erysimum asperum Cheiranthus asperus Erysimum arkansanum
western_wall_flower%1:20:00:: erysimum_asperum%1:20:00:: cheiranthus_asperus%1:20:00:: erysimum_arkansanum%1:20:00::
biennial or short-lived perennial prairie rocket having orange-yellow flowers; western North America to Minnesota and Kansas; sometimes placed in genus Cheiranthus