LENTIBULACE.E. (BLADDERWORT FAMILY.) 301 



ORDER 87. LENTlBUL.ACE.rE. (BLADDKKWOUT FAMILY.) 



Aquatic or marsh herbs, with entire or dissected leaves, and irregu- 

 lar flowers. Calyx iMipped. Corolla '-'-lipped, personate, spurred at 

 the base. Stamens 2, short, included : anthers 1-celled. Ovary free, 

 ovoid, 1-celled. Ovules numerous, anatropous, inserted on the free 

 central globose placenta. Style short: stigma 12-lipped, the lower lip 

 larger and covering the anthers. Capsule globose, many-seeded, open- 

 ing irregularly. Embryo straight and thick. Albumen none. 



1. UTRICULARIA, L. BLADI.KKWOUT. 



Lips i.f the calyx entire. Throat of the corolla nearly closed by the project- 

 ing palate; the lips entire or slightly lubed, the lower one with an appressed 

 or depending spur at the base. Herbs, floating in still water by means of 

 small air-bladders attached to the finely dissected leaves (or roots), or rooting 

 in damp earth, with entire leaves, and few or 110 air-bladders. Scapes or pe- 

 duncles 1 - many-flowered. 



* Stem flouting : upper leaves whorled, on inflated petioles ; the others scattered 

 and Jinely dissected : flowers yellow. 



1. U. inflata, Walt. Scape 5 - 1 0-flowered ; corolla large (f wide) ; the 

 liwer lip .'Molted, twice as long as the appressed conical notched spur, the up- 

 per concave, nearly entire ; fruit nodding. Var. MINOR. Every way smaller ; 

 scape 2-flowered. Ponds and ditches, Florida to North Carolina, and west- 

 ward. April - May. Stem 2 long. Scape 6' - 1 2' high. 



* * Stem floating : leaves all scattered and finely dissected : flowers i/fllmr. 



2. U. vulgaris, L. ? Leaves decompound ; scape scaly, 5 1 2-flowered; 



throat of the corolla closed by the prominent palate ; the lobes nearlv entire, 

 with reflexed margins, 1 tnger than the conical obtuse somewhat spreading 

 spur; fruit nodding. Ponds and still water. May -July. Stem 2 -3 

 long Scapes 6'- 12' high. Corolla wide. 



3. U. Striata, Leconte Leaves decompound; scape slender, sparingly 

 bracted, 5 - 6-flowered ; lips of the long pedu-elled corolla nearly equal, 3-lobed , 

 the upper one concave, striate in the middle, the lower with reflexed margins, 

 as long as the linear nearly appressed notched spur ; palate dotted with brown. 



-Still water, Florida, and northward. Sept. Scapes 10' high. Corolla \' 

 wide. 



4. TJ. biflora, Lam. Small: leaves short, sparingly divided, root-like; 

 scape 1-3- (mostly 2-) flowered, almost hracless ; lips of the small (4" -5") 

 corolla equal, roundish; the upper one slightly 3-lobed; the lower entire, 

 rather shorter than the subulate nppressed spur; palate globose, 2-lohed 

 Ponds, Florida to South Carolina. May- June. Stem 4'-6' long, with 

 clustered branches. Scape 2' -4' hi<rh. 



5. U. fibrosa, Walt. Scape filiform, 1-3-flowered; pedicels long and 

 slender ; upper lip of the corolla slightly 3-lobed ; the lower entire, as long ns 

 t'.i3 conical obtuse spur. Miry margins of ponds. Sept. Scape 4' -10' 

 high. Corolla 6" - 8" wide. 



