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Viola palustris

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Viola palustris (marsh violet,<ref name=BSBI07>Template:Cite web</ref> or alpine marsh violet) is a perennial forb of the genus Viola. It inhabits moist meadows, marshes, and stream banks in northern parts of North America and Eurasia. The species epithet palustris is Latin for "of the marsh" and indicates its common habitat.<ref>Archibald William Smith Template:Google books</ref>

The lateral petals are lightly bearded. The lobed stigma is glabrous.

Viola palustris is a 5 to 22 cm, glabrous herb with petioles and peduncles from slender rhizomes. The cordate to reniform leaves are 2.5 to 3.5 cm wide with coarse, shallow, blunt teeth. Petioles are 2 to 17 cm. The white to lilac flowers are 10 to 13 mm long. Peduncles are about the same length as petioles. The lower three petals have purple lines. The lateral pair are lightly bearded.

It is used as the foodplant for the pearl-bordered fritillary and the small pearl-bordered fritillary.

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