Northern bog violet
Viola nephrophylla is a(n) perennial herb, which grows 3 cm to 16 cm in height. This species is commonly found from low to high elevations throughout the Black Hills area; wet meadows, stream banks, fens, and boggy areas. The leaves are petioles; blades ovate-cordate to renifrom, bluntly toothed. Viola nephrophylla has blue-violate colored flowers that bloom from May to September.