Wallflower
.So called because it grows on old walls and ruined buildings. It is a native plant. Similarly, wallcress, wall-creeper, etc., are plants which grow on dry, stony places, or on walls. Wall-fruit is fruit trained against a wall. (See Walnut.)
Herrick has a pretty fancy on the origin of this flower. A fair damsel was long kept in durance vile from her lover; but at last