This section is from the book "An Illustrated Flora Of The Northern United States, Canada And The British Possessions Vol3", by Nathaniel Lord Britton, Addison Brown. Also available from Amazon: An Illustrated Flora of the Northern United States, Canada and the British Possessions. 3 Volume Set..
Utricularia inflata var. minor Chapm. Fl. S. U. S.
282. 1860. Not U. minor L. 1753. Utricularia radiata Small, Fl. SE. U. S. 1090. 1903.
Stems long, floating horizontally beneath the surface of the water. Leaves alternate, 6-10-dichotomous, usually less than 1 1/2' long, bladder-bearing; scape 1-4-flowered, with a whorl of 4-7 inflated floats, above the floats 11/2'-4' high; floats up to 1 1/2' long, lobed and finely dissected toward the apex; pedicels 4"-10" long; corolla 6"-9" long, the upper lip suborbicular, undulate, the lower lip about the same length but broader, 3-lobed, with a prominent 2- lobed palate; spur conic, obtuse, appressed to and shorter than the lower lip.
In ponds, Maine to Florida and Texas, near the coast. March-Sept.
Utricularia inflata Walt. Fl. Car. 64. 1788.
U. ceratophylla Michx. Fl. Bor. Am. 1: 12. 1803.
Stems long, floating horizontally beneath the surface of the water. Leaves alternate, 10-12-dichoto-mous, usually more than 2' long, bladder-bearing; scape 4-12-flowered, with a whorl of 4-9 inflated floats, above the floats 5'-12' high; floats 2'-3 1/2' long, lobed and dissected from near the middle; pedicels 8"-16" long; corolla 10"-12" long, the upper lip subtriangular, undulate, often emarginate, the lower lip a little longer and much broader, undulate, faintly 3-lobed, with a prominent 2-lobed palate; spur conic, toothed, appressed to and about half the length of the lower lip.
In ponds, Delaware to Florida, near the coast. May.