738 LENTIBULARIACEAE (BLADDEBWORT FAMILY) 



stems, petioled, decompound, capillary, bearing many bladders ; flowers 2-4, 

 1-1.3 cm. wide ; spur appressed to the 3-lobed 2-saccate lower lip of the corolla 

 and about half its length. Ponds, N. B. to Fla. ; also 

 n. Ind. and Mich, to Minn. July-Sept. FIG. 901. 



* * * 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 

 901. U. purpurea. none. 



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



10. U. resupinata B. D. Greene. Scape 0.5-2 dm. high, 2-bracted above ; 

 leaves thread-like, on delicate creeping branches ; corolla 1 cm. long, deeply 

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

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

 mit of the scape. Sandy margins of ponds, N. B. to w. Ont., s. to Fla., and 

 the Great L. region. Aug. 



- -- Flowers minute, purplish or whitish, solitary or few ; leaves entire. 



11. U. cleist6gama (Gray) Britton. Only 2-5 cm. high, bearing 1 or 2 evi- 

 dently cleistogamous flowers (not larger than a pinhead) ; capsule becoming 2 

 mm. long. (U. subttlata, var. Gray.) Sandy and muddy shores, Cape Cod, 

 and southw. Aug., Sept. 



*-*-*- Flowers 2-10, yelloio ; leaves entire, rarely seen. 

 ++ Stemflexuous; flowers long-pediceled. 



12. U. subulata L. Stem capillary, 2-20 cm. high ; the raceme zigzag ; pedi- 

 cels capillary ; lower lip of the corolla flat or with its margins recurved, equally 

 'A-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. 

 May-Sept. 



w- --* Stem strict ; flowers sessile or short-pediceled. 



= Corolla conspicuously exceeding the calyx. 



13. U. cornuta Michx. Stem 0.5-3 dm. high, 1-5-flowered ; corolla 1.5-2 

 cm. broad, the lower lip large and helmet-shaped, its center very convex and 

 projecting, while the sides are strongly reflexed ; upper lip obovate and much 

 smaller ; spur awl-shaped, turned downward and outward, 10-12 mm. long. 

 Peat-bogs or sandy shores, Nfd. to Ont. and Minn., s. to Fla. and Tex. 

 June-Aug. 



14. U. juncea Vahl. Stem 1^1 dm. high, 4-10-flowered ; pedicels short ; 

 corolla barely 1 cm. broad, lower lip obovate, consisting principally of the high- 

 arched palate; spur awl-shaped, about 6 mm. long. Bogs and wet shores, Va., 

 and southw. June-Sept. 



= = Corolla barely if at all exceeding the calyx. 



15. U. virgatula Barnhart. Very slender and strict, 2.5-25 cm. high ; 

 flowers 2-6, remotely spicate, rarely solitary ; corolla usually shorter than the 

 purplish calyx ; the upper lip spatulate, emarginate ; the lower laterally com- 

 pressed, apiculate, hairy at throat ; the conical spur 2-3 mm . long ; capsule 

 subglobose, 1.5-2 mm. in diameter, seemingly beaked by the persistent acuminate 

 upper calyx-lobe. ( U. simplex C. Wright, not R. Br. ) Shores of ponds, pine 

 barrens of L. I. and N. J. ; also Fla. to Miss. Aug., Sept. (Cuba.) 



2. PINGUfCULA [Tourn.] L. BCTTERWORT 



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, growing 



