Utricularia gibba

Affixed or suspended aquatic annual or perennial with branched filiform stolons to c. 20 cm long. Leaves alternate, 4-8(-15) mm long, divided from base into 2 (rarely only 1), c. equal capillary segments, these occasionally sparsely dichotomously divided. Traps ovoid, 1-2.5 mm long, mouth lateral. Raceme usually emergent, erect, mostly 1-20 cm long, 1-12-flowered; sterile bract usually 1, in upper half of peduncle, cuneate, 1-1.2 mm long; fertile bracts basifixed, c. 1 mm long; bracteoles absent; calyx-lobes subequal, broad-ovate to orbicular, 1-3.5 mm long. Corolla 4-25 mm long, yellow; upper lip broad-ovate to suborbicular; lower lip slightly smaller, orbicular to transversely elliptic, palate with bilobed basal swelling, often with reddish-brown lines; spur narrowly conical or cylindric, typically longer than lower lip. Capsule globose, 2-3 mm diam.; seeds lenticular, 0.8-1 mm diam. Flowers Nov.-Jun. Flowers Nov.–Jun.