cheiranthus allionii(n = noun.plant) erysimum allionii, siberian wall flower - showy erect biennial or short-lived perennial cultivated for its terminal racemes of orange-yellow flowers; sometimes placed in genus Cheiranthus;
is a kind of wallflower
is a member of erysimum, genus erysimum

cheiranthus, cheiranthus asperus, cheiranthus cheiri, erysimum allionii, genus cheiranthus