Boloria selene, known in Europe as the small pearl-bordered fritillary, is a species of butterfly of the family Nymphalidae. It is found across Europe, Asia and North America, and feeds exclusively on
Dorsal side
Ventral side
Dorsal view
Viola palustris
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Viola palustris 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 means "marsh-
The lateral petals are lightly bearded. The lobed stigma is glabrous.