LENTIBULARIACE^E. (BLADDERWORT FAMILY.) 397 



upper undulate, concave, plaited-striate in the middle ; spur nearly linear , 06- 

 tuse, approaching and almost equalling the lower lip. (U. striata, LeConte.) 

 Shallow pools in pine barrens, L. Island and N. J. to Fla. and Ala. 



8. U. intermedia, Hayne. Leaves crowded on the immersed stems, 

 2-ranked, 4-5 times forked, rigid, the divisions linear-awl-shaped, minutely 

 bristle-toothed along the margins ; the bladders borne on separate leafless 

 branches; upper lip of corolla much longer than the palate; spur conical- 

 subulate, acute, appressed to the very broad (6 - 8") lower lip and nearly as long 

 as it. Shallow pools, Newf . to N. J., west to Iowa, Minn., and northward 

 (Eu., Asia.) 



*+ HH- + Pedicels erect in fruit, rather long ; corolla violet-purple. 



9. U. purptirea, Walt. Leaves whorled along the long immersed free 

 floating stems, petioled, decompound, capillary, bearing many bladders ; flow- 

 ers 2 - 4 (6" wide) ; spur appressed to the 3-lobed 2-saccate lower lip of the 

 corolla and about half its length. Ponds, Maine and N. Penn. to Fla., 

 mainly near the coast; also Lake Co., Ind. 



* * * Scape solitary, slender and naked, or with a few small scales, the base 

 rooting in the mud or soil ; Leaves small, awl-shaped or grass-like , often raised 

 out of the water, commonly few or fugacious ; air-bladders few on the leaves 

 or rootlets , or commonly none. 



H- Flower purple, solitary ; leaves bearing a few delicate lobes. 



10. U. resupinata, B. D. Greene. Scape (2-8' high) 2-bracted above; 

 leaves thread-like, on delicate creeping branches ; corolla (4 - 5" long) deeply 

 2-parted ; spur oblong-conical, very obtuse, shorter than the dilated lower lip 

 and remote from it, both ascending, the flower resting transversely on the 

 summit of the scape. Sandy margins of ponds, E. Maine to R. I., near the 

 coast ; also N. New York and Presque Isle, L. Erie. 



H- *- Flowers 2-10, (chiefly) yellow; leaves entire, rarely seen. 



U. U. SUbulata, L. Stem capillary (3-5' high); pedicels capillary; 

 lower lip of the corolla flat or with its margins recurved, equally 3-lobed, much 

 larger than the ovate upper one ; spur oblong, acute, straight, appressed to the 

 lower lip, which it nearly equals in length. Sandy swamps, and pine-barrens, 

 Nantucket, Mass., to N. J., Fla., and Tex., near the coast. 



Var. cleist6gama, Gray. Only 1 - 2' high, bearing 1 or 2 evidently cleis- 

 togamous purplish flowers, not larger than a pin's head; capsule becoming 1" 

 long. (The unnamed Utricularia in the Man., p. 320). With the ordinary 

 form ; Barnstable and Nantucket, Mass., pine-barrens of N. J., and southward. 



12. U. COrntlta, Michx. Stem strict (3'-l high), 1-5-flowered; ped- 

 icels not longer than the calyx; corolla 1' long, the lower lip large and helmet- 

 shaped, its centre very convex and projecting, while the sides are strongly 

 reflexed ; upper lip obovate and much smaller ; spur awl-shaped, turned down- 

 ward and outward, about as long as the lower lip. Peat-bogs, or sand/ 

 swamps, Newf. to Minn., south to Fla. and Tex.; common. 



2. PINGUICULA, Tourn. BUTTERWORT. 



Upper lip of the calyx 3-cleft, the lower 2-cleft. Corolla with an open hairy 

 or spotted palate, the lobes spreading. Small and stemless perennials, grow- 



