Peucedanum palustre, (L.) Moench

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 : 363

24. P. palustre (L.) Moench , Meth. 82 (1794).

Almost glabrous biennial up to 160 cm. Stock without fibres. Stem sulcate, hollow, often purplish. Lower leaves 2- to 4-pinnate, triangular in outline; petiole strongly canaliculate above, often puberulent beneath; lobes 5-20 mm, ovate in outline, pinnately lobed; ultimate lobes linear or oblong, entire or 2- to 3-fid, with an obtuse cartilaginous apex. Rays 20-40, puberulent on the inner side. Bracts and bracteoles 4 or more, very unequal, lanceolate, sometimes 2- to 3-fid, deflexed. Sepals ovate, obtuse. Petals white, papillose-puberulent above. Fruit 4-5 mm, elliptical; wing 0-5-0-75 mm wide, thick; dorsal ridges wide and prominent; commissural vittae concealed by pericarp. Wet places. Europe, except the south-west, the extreme south and most of the islands. Au Be Br Bu Cz Da Fe Ga Ge He Ho Hu It Ju No Po Rm Rs (N, B, C, W, E) Su.