Viola uliginosa, Besser

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1981, Flora Europaea. Volume 2. Rosaceae to Umbelliferae, Cambridge University Press : 275

26. V. uliginosa Besser , Prim. Fl. Galic. 1:169 (1809).

Rhizome slender; shoots short, erect, bearing rosettes of leaves. Leaves 4 x 2 cm, cordate, acute; petiole 2 -1 0 cm. Stipules ovatelanceolate, entire. Flowers 2-3 cm, arising from the base of the rosette, violet. Sepals 5-6 mm, ovate-lanceolate. Spur 3-4 mm, stout, violet. Fruiting peduncles up to 15 cm, erect. 2« = 20. Moorland and marshes. C. & W. parts o f U.S.S.R. and S. & E. Fennoscandia, extending very locally westwards to E. Germany and N. W. Jugoslavia. Da Fe Ge Ju Po?Rm Rs (N, B, C, W) Su. Greatly reduced by draining and cultivation, especially in the western part of its range; mainly now in White Russia, W. Ukraine and W.C. Russia. Hybrids with 18 have been described from Russia and Sweden.