DAME'S VIOLET, the English name for Hesperis rna tronalis, a herbaceous plant belonging to the family Cruciferae, and closely allied to the wallflower and stock. It has an erect, stout, leafy stem, 2 to 3 ft. high, with irregularly toothed, short-stalked leaves and white or lilac flowers, a in. across, which give off a scent in the evening. The slender pods are constricted between the seeds. The plant is a native of Europe and temperate Asia, and is found in Great Britain and in the eastern United States and Canada as an escape from gardens, in meadows and plan tations.