The varieties of the common wallflower afford quite a store of beauty in themselves for the embellishment of rocky places, old walls, etc. Probably other species of Cheiranthus will be found to grow on ruins quite as well, but at present we are not quite sure of these. The clear yellow Erysimum ochroleucum is very like a wallflower in type, and thrives well in dry sandy places. With these might be associated Vesicaria utricnlata.