Utricularia vulgaris, 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 : 297

5. U. vulgaris L. , Sp. Pl. 18 (1753).

Aquatic, floating submerged; stems up to 100 cm, slender; internodes 3-10 mm; leaves up to 3 cm, 2-lobed from the base; lobes more or less broadly ovate in outline, pinnately divided; segments capillary, denticulate, bearing solitary or fasciculate bristles on each tooth; bladders up to 3 mm. Inflorescence 10-30 cm; scape erect in fruit; flowers 4-10; bracts 5 mm, more or less auriculate; pedicels 6-15 mm, 2-3 times as long as the bract, strongly recurved in fruit. Corolla 12-18 mm, deep yellow; upper lip about as long as the conspicuous gibbous palate; lower lip with deflexed margin; spur more or less broadly conical at base, rather abruptly narrowed to a short, narrowly cylindrical, more or less acute apex with internal glands on the abaxial surface only. Capsule 3-5 mm, globose, usually freely produced. 2n —c. 40. Still water. Most of Europe, but rare in the south. Al Au Be Br Bu?Cr Cz Da Fa Fe Ga Ge Gr Hb He Ho Hs Hu It Ju No Po Rm Rs (N, B, C, W, K, E) Si Su.