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LENTIBULACEJE. (BLADDERWORT FAMILY.) 
bearded. Ovary free: style very short or none : stigma 
1-2-lipped, the lower lip larger and revolute over the ap¬ 
proximate anthers. Capsule often bursting irregularly. 
Seeds with a straight embryo and no albumen. Scapes 1 - 
few-flowered. 
1. UTRICULARIA, L. Bladderwort. 
Lips of the 2-parted calyx entire, or nearly so. Corolla per¬ 
sonate, the palate on the lower lip projecting, and often closing 
the throat. — Aquatic and immersed, with capillary dissected 
leaves bearing little bladders, which are filled with air and float 
the plant at the time of flowering, or rooting in the mud, and some¬ 
times with few or no leaves or bladders. Scapes 1 - few-flowered. 
(Name from utriculus, a little bladder.) 
* Upper leaves in a whorl , floating by means of large bladders formed 
of the inflated petioles: the lower bearing little bladders. 
1. U. ill flat a, Walt. (Inflated Bladderwort.) Stalks of 
the whorled floating leaves inflated each into an oblong bladder, 
pointed at the ends, and branched near the apex, bearing fine thread¬ 
like divisions, like those of the lower leaves; flowers 5 —10 (large, 
yellow); the slender conical spur half the length of the corolla; style 
distinct. — Ponds, Maine to New Jersey and Wisconsin. Aug. 
* * Leaves all many-cleft into fine thread-like divisions , and bearing 
small air-bladders, the stalks not inflated: plant sometimes rooting , 
but commonly swimming free. (Mostly perennial, being propagated 
from year to year by a sort of buds; the terrestrial species annual.) 
Flowers purple. 
2. U. purpurea, Walt. (Purple Bladderwort.) Sicim- 
ming free; leaves whorled along the long immersed stems, petioled, 
decompound, capillary, bearing many bladders ; flowers 2-4; spur 
oppressed to the lower lip of the corolla and about half its length.— 
Ponds, New England to New Jersey. Aug. - Sept. — Flowers violet- 
purple, about as large as in No. 4. 
3. 17. resupinata, Greene. (Reversed Bladderwort ) 
Rooting ; leaves thread-shaped, erect or floating, bearing vefy f e ' v 
fine divisions and some bladders near the base; scape slender, 1- 
flowered; the oblong-conical spur turned upwards , and remote from 
the corolla , which is thrown backward. — Sandy borders of ponds, 
Tewksbury and Plymouth, Massachusetts, to Rhode Island. Aug - 
Leaves V - 2' long, looking like shooting stems. Stalk 2' - 8' high- 
■*” Flowers yellow. * 
4. 17. Vulgaris, L. (Common or Greater Bladderwort-) 
