LENTIBULAKIACE^. (liLADDERWOKT FAMILY.) oU7 



upper undulate, concave, plaited-striate in the middle ; spur nearly linear, o^j- 

 ?j<6'e, approaching and almost equalling the lower lip. (U. striata, ZeC'o«/e.) 

 — Shallow pools in pine barrens, L. Island and X. 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 leajiess 

 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.) 



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



9. U. purpurea, 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 w 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 K. I., near the 

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



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



11. U. SUbuIata, 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. cleistogama, 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 Xantucket, Mass., pine-barrens of N. J., and southward. 



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

 icels not longer than the calyx ; corolla V 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 aivl-shaped, turned down- 

 ward and outward, about as long as the lower lip. — Peat-bogs, or sandv 

 swamps, Xewf. 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 steraless perennials, grow- 



