Littorella uniflora, (L.) Ascherson

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1976, Flora Europaea. Volume 4. Plantaginaceae to Compositae (and Rubiaceae), Cambridge University Press : 44

1. L. uniflora (L.) Ascherson , Fl. Brandenb. 1: 544 (1864)

( L. lacustris L. ).

Stolons slender, with roots and leaf-rosettes at the nodes. Leaves l- 5-10(-25) cm, linear-subulate, semicircular in section, sometimes flat and wider. Scape shorter than, rarely as long as, the leaves. Male flowers 5-6 mm; female flowers 4-5 mm. Stamens 1-2 cm. Style c. 1 cm. 2« = 24. Shores of lakes and ponds from just above to c. 4 m below water-line. W. & C. Europe, extending to N. Italy, much of Fennoscandia and N. W. part of U.S.S.R.; isolated stations in S. Romania. Au Az Be Br?Co Cz Da Fa Fe Ga Ge Hb He Ho Hs Is It Lu No Po Rm Rs (N, B, C) Sa Su.