
A Violet, my best guess is Viola langsdorfii
This violet was growing on the floor of a nearly empty but still very moist ditch. The top photo gives an indication of the habitat. The lower photo is a closeup of a newly opened blossom. My identification of V. langsdorfii rather than V. palustris was predicated by the habitat. Any corrections on the identification will be welcomed.

''Viola langsdorffii'' is a species of the ''Viola''. It is a plant from rather stout creeping rootstocks, glabrous, the stems ascending 5-30 centimeters long. The ''Viola langsdorffii'' has leaves that are long-petioled, round-cordate, and anywhere from 2.5 to 4 centimeters broad, crenate; stipules foliaceous, lanceolate, the lower usually incised. The flowers are pale violet, with petals 12-16 millimeters long, the three lower white at base, the lateral pair bearded; spur very short and stout,.. more
