1. Utricularia minor L., Sp. Pl. 18. 1753. Reichb., Ic. Fl. Germ. 20:t.825 f. I: 1-16. 1862; DC., Prodr. 8: 7. 1844; Clarke in Hook.f., Fl. Brit. Ind. 4: 330. 1885; Jenna in Rech. f., Fl. Iran.58: 2.1969; Taylor in Tutin et al., Fl. Europ. 3: 296. 1972, in Kew Bull. Add. Ser.14. 1989; Stewart in Nasir & Ali, Ann. Cat. Vas. Pl. W. Pak. & Kashm. 673. 1972; Mill in Davis, Fl. Turk. 6: 110.1978.
Aquatic herbs, usually anchored to substratum. Stem Onions) filiform, terete, ± dimorphic, green above the substratum or floating, other colourless ± buried in substratum. Leaves polymorphic, with 1-3 primary segments, those above the substratum palmately dissected, with glabrous, entire, flattened segments with few or no bladders; those beneath the substratum much reduced with bladders. Bladders ovoid, stalked, 0.8-2.0 mm long, arranged lateraly on segments, with much branched antennae. Inflorescence erect, 8-18 cm long; peduncle filiform, terete, glabrous. Scales 2-3, ovate, 1.4-2.0 mm long, basifixed. Bracts basifixed, broadly ovate, base auriculate. Flosyer 5-8, pedicel erect, deflexed in fruiting. Calyx lobes subequal, 1.8-2 x 1.4 mm, ovate. Corolla pale yellow, 6-8 x 4.5-5 mm; upper lip ovate-oblong with refuse apex; lower lip broadly obovate, with retuse apex, lateral margins curved downward. Spur short, subconical, not longer than wide; filaments curved. Stigma upper lip smaller, 2-fid, apex acute; lower lip broadly ovate, ciliate, apex reflexed. Ovary broadly ellipsoid. Capsule globose. Seeds prismatic, unwinged.
Type: Described from Europe, Hb. Linn. 34/3 (LINN.).
Distribution: Temperate Europe, Tropical, Western and Central Asia, New Guinea and N. America.
A rare or undercollected oligotrophic species. Commonly found in shallow water and bogs.