216 ORDER 84. LENTIBULACE^E. 



lar; corolla lobes obtuse, 2-lobulate ; spur half as long as the tube, blunt. S. Car. to 

 Fla. Scape very slender, 812' high. Lvs. 1' or less. Fls. 1'. (P. australis N.) 



3 P. puinila MX. Lvs. glabrous, roundish-ovate ; corolla tube oblong, lobes eraargi- 



nate ; spur acute, nearly as long as tube. Ga., Fla. 24'. Fls. 4 5" long. 



4 P lutea Walt. Lvs.. elliptic to obovate; cor. bell-shaped, nearly regular, the lobes 



sinuate-dentate ; spur slender, t as long as corolla. S. 58'. Fls. 9" broad. 



2. UTRICULARIA, L. BLADDER WORT. Cal. 2-parted, lips subequal. 

 Cor. irregularly bilabiate, personate, spurred. Stamens 2. Stig. bilabiate. 

 Caps, globular, 1-celled. ? Loosely floating, or fixed in the mud. Lvs. 

 radical, rnultifid or linear and entire, mostly furnished with little inflated 

 utricles (whence the name) as buoys. Scape erect. June Sept. Fig. 399. 



Floating. Scape involncrate with a whorl of large inflated petioles No. 1 



$ Floating. Scape naked, branches bearing bulblets and bladders. . .(a) 

 Stems creeping and rooting in mud, with few or no air-bladders . . . (b) 



a Flowers purple. Branches whorled, submersed Nc. 2 



a Flowers yellow. c Bladders borne on the capillaceous leaves., .(d) 



c Bladders and leaves borne on separate branches Nos. 3, 4 



d Spur acute or retuse. about as long as the lips : Nos. 5 7 



d Spur obtuse, short. e Fls. of 2 kinds, the lipless down on the steins No. 8 



e Fls. of 1 kind only, all on the scapes Nos. 91 1 



6 Spur appressed to and scarcely equalling the lower lip of the corolla Nos. 12, 13 



b Spur remote from the corolla, slender, acute Nos. 14, 15 



1 U. inflata Walt. Upper Ivs. in a whorl of 5 or G at the surface of the water ; pet. 



and midvein inflated, lower Ivs. capillaceous, dissected, submerged ; scape 4-5-flwd. 

 y In ponds and ditches. Rhizome or stem long. Scape 8'. Fls. 8" broad, yellow, 

 upper lip rounded, entire, lower lip 3-lobed. August. 



2 U purpikrea Walt. Leaves all submersed, fibrillous, whorled on the long stem ; 



ecape assurgent, 2-3-flowered ; lower lip 3-lobed, bisaccate, longer than the conical 

 spur beneath it. (i) Ponds. Scape 35'. Flowers G" broad, violet-purple. 



3 U Intermedia Hayne. Lvs. 2-ranked, crowded, 4 5 times forked, divisions lin- 



ear-subulate, ciliate-denticulate, rigid, 2 3" long ; bladders all on leafless branches ; 

 scape 2-3-flowered ; spur conical, acute ; corolla G 8". Pools, Pa., and N. 68'. 



4 U. Robbinsii Wood. Leaves alternate, 34 times forked, divisions flaccid, linear- 



capillary, entire, 8 12" long ; bladders all on leafless branches ; scape tall (813'), 

 4-7-flowered ; spur fusiform ; corolla 45". CD Mass. (Dr. Robbins.) 



5 U. striuta Le Contc. Lvs. 3^-furcate, divisions capillary ; scape 2-6-flowcred, 8 



12' ; fls. 6", on slender pedicels, lips subequal, 3-lobed, the upper striate with red, 

 concave, the lower as long as the obtuse, notched spur, (i) L. I. to Fla. 

 G U. loiigirostris Ell. Lvs. 2-3-furcate, with setaceous segments ; scape 1-3-flow- 

 ered (34') ; lower lip entire, shorter than the subulate spur. South. 



7 "CJ. biflora Lam. Lvs. capillary, root-like, bearing numerous bladders; scape 2 5', 



2-flowered ; spur obtuse, notched, equalling the lower lips. W. and S. 



8 U. clandestina N. Lvs. capillaceous-multifid, scattered, bladder-bearing ; e-capo 



slender, 3 4', 2-3-flwd., seldom seen ; cor. 5", spur shorter than the 6-lobed Tower lip ; 

 ped. down on the stems 1', with 1 apetalous flower, if. Pondy, Mass, to N. J. and Pa. 

 I) U. gibba L. Minute, with hair-like leaves and few utricles ; scape 1-2-flwd., naked 

 (2 3') ; corolla spur blunt (gibbous) and short, lips many-lobcc. ii R. I. to Car. 



10 17. vulgar is L. Lvs. capillaceous-multilid, fibrillous ; sc. scaly, 5-12-flwd., G 1?'; 

 spur conical, shorter than the closed lips (3 4"), divergent ; fr. nodding. 2; Ponds. 



11 U. minor L. Lvs. short, several times forked; sc. 3-6-flwd., 47' ; cor. ringent, 

 spur blunt, deflexed, much shorter than the obovate, flat lower lip ; fr. nodding, u. 



12 U. bipartita Ell. Lvs. fibrillous-multifid ; ?c. 1-3-flwd., 23' ; cal. lower lip 2- 



,' spur obtuse, half as long at- the entire lower lip. Soft mud, South. 



