Rumex palustris, Sm.

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 : 88

45. R. palustris Sm. , FI. Brit. 1: 394 (1800).

Annual or biennial 30-60 cm; whole plant eventually brown. Basal leaves about 6 times as long as wide, lanceolate, acute, cuneate at the base; margin undulate. Branches of panicle arcuate; whorls remote, all subtended by leaves. Pedicels 1-11 times as long as valves. Valves 3-3-5(-4) x 1-2-1-5 mm (excluding teeth), narrowly Ungulate; teeth 2-3 on each side, about as long as the width of the valve. 2/z = 40. Marshes and riversides. C. & S. Europe, extending to England, the Netherlands, S. Sweden and Latvia. Au Be Br Bu D a G a Ge G r He Ho Hs Hu It Ju N o Po Rm Rs (B) Su.

Erroneously interpreted by some authors as a hybrid ( R. conglomeratus x maritimus ); consequently all hybrids in which R. palustris took part have been interpreted as triple hybrids.