Hottonia palustris, L.

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1972, Flora Europaea. Volume 3. Diapensiacea to Myoporaceae, Cambridge: Cambridge University Press : 24

1. H. palustris L. , Sp. Pl. 145 (1753) .

Subglabrous, with creeping stolons and erect leafy stems 30-90 cm. Leaves 2-13 cm, alternate or verticillate, submerged and floating, 1 - to 2-pinnate; lobes linear. Inflorescence (15-)30-40(-60) cm, bracteate, with 3-9 whorls of flowers; pedicels 12-30 mm, glandular-pubescent, deflexed in fruit. Calyx 4-6 mm, equalling corolla-tube, lobed nearly to base; lobes linear. Corolla 20-25 mm in diameter, violet; throat yellow. Capsule 3-6 mm; seeds brown, polyhedral, coarsely reticulate. 2« = 20. Shallow fresh water. From C. Sweden southwards to C. Italy and Romania. Au Be Br fBu Cz Da Ga Ge He Ho Hu It Ju Po Rm Rs (B, C, W, E) Su [Hb].