Marsh violet (Viola palustris) belongs to the family Violaceae (the Violet family). It is a perennial herb that is native to northern Eurasia and northern North America. This herb grows in moist meadows, marshes, and streambanks, and it can reach 3-10 cm in height. The leaves are basal rosette, kidney-shaped, and stalked. The flowers are solitaly, nodding, and bloom in May to June. The lateral petals are lightly bearded.