Polygonum bistorta, L.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1964, Flora Europaea - Volume 1. Lycopodiaceae to Platanaceae, Cambridge University Press : 80

32. P. bistorta L. , Sp. Pl. 360 (1753) .

Rhizome stout, contorted. Stems 20-100 cm, erect, simple. Lower leaves 5-15 cm, ovate, obtuse, truncate at base; petioles long, broadly winged in upper part. Upper leaves triangular-lanceolate, acute or acuminate. Flowers bright pink, in a terminal, dense cylindrical spike 20-70 x 10-15 mm. 2/7 = 44. Damp, grassy places. Throughout a large part o f Europe, but absent as a native from most o f Fennoscandia, and only on mountains in the south. Al Au Be Br Bu Cz?Fe G a Ge He Ho Hs H u It Ju Lu Po Rm Rs (N, B, C, W, K, E) [Da H b No Su].