Cardamine rhomboidea. Mustard Family.
Rootstock. - Slender, bearing small tubers. Stem. - From a tuberous base, upright, slender. Root leaves. - Round and often heart-shaped. Stem leaves. - The lower rounded, the upper almost lance-shaped. Flowers. - White, large. Pod. - Flat, lance-shaped, pointed with a slender style tipped with a conspicuous stigma; smaller than that of the crinkleroot.
The spring cress grows abundantly in the wet meadows and about the borders of springs.
Its large white flowers appear as early as April, lasting until June, well above the foliage.