Aquatic and Wetland Vascular Plants of the Northern Great Plains
46. Lentibulariaceae, the Bladderwort Family
1. Utricularia L. -- Bladderwort
2. Utricularia minor L.
Similar in habit to the preceding. Leaves numerous, commonly trichotomous
at the base and then dichotomous or irregularly 1-3X divided, mostly 0.3-1 cm
long, the segments slender, flat, entire, sometimes toothed at the tip, not
much reduced with each branching, the ultimate segments strongly acuminate;
bladders borne on ordinary leaves, 1-2 mm wide; winter buds obovoid
to globose, 2-5 mm long. Flowers usually 2-9 in a lax raceme; peduncle
4-15 cm long; corolla with a lower lip 4-8 mm long, 2X as long as the
upper lip, the palate scarcely developed; spur small, to 1/2 as long
as the lower lip; fruiting pedicels recurved. Jul--Aug. Shallow water
of fens and fresh marshes; rare, n and c ND, c and sw NE; (Circumboreal, in
N. Amer. s to NJ, IN, ND and CA).