Sparganium minimum, Wallr.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1980, Flora Europaea. Volume 5. Alismataceae to Orchidaceae (Monocotyledones), Cambridge: Cambridge University Press : 275

6. S. minimum Wallr. , Erst. Beitr. FI. Hercyn. 2: 297 (1840).

Stem 8-30 cm, floating, very rarely erect, with 4-9 internodes. Leaves flat, thin, usually translucent, slightly inflated at base. Inflorescence simple. Lowest bract 1 -5(- 8) cm, scarcely exceeding inflorescence. Female capitula (l-)2-3(-4), usually sessile, remote. Male capitulum separated from the female by an obvious internode, solitary (rarely 2 and then close together and appearing as one). Fruit obovoid, pale brown, sessile, with short, beak-like style. In — 30. Europe southwards to the Pyrenees, N. Appennini and S. Bulgaria. Au Be Br Bu Cz Da Fe Ga Ge Hb He Ho Hs Hu Is It Ju No Po Rm Rs (N, B, C, W, E) Su.