Oenanthe fistulosa, L.

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 : 338

3. O. fistulosa L. , Sp. Pl. 254 (1753) .

Erect, slender, stoloniferous perennial up to 80 cm. Roots with fusiform to ovoid tubers. Stem striate, hollow, thin-walled, often constricted at nodes. Basal leaves 1- to 2-pinnate; lobes ovate, lobed. Cauline leaves pinnate; lobes linear-lanceolate to subulate, entire. Submerged or winter leaves 2-pinnate; segments filiform. Umbels terminal. Peduncle longer than rays. Rays 2-4, thickened in fruit. Pedicels present only at periphery of partial umbels, not thickened in fruit. Fruit 3-4 mm, cylindrical or obconical. Styles as long as fruit. 2«=22. Wet places and in shallow water. W., C. & S. Europe, extending to S. Sweden and White Russia. Al Au Be Br Bu Co Cz Da Ga Ge G r Hb He Ho Hs Hu It Ju Lu Po Rm Rs (C,W) Sa Si Su.