BIGNONIACE2E. (BIGNONIA FAMILY.) 277 



** ** Corolla violet-purple. 



8 17. purpurca, Walt. (PURPLE BLADDERWORT.) Leaves whorled 

 along the long immersed free floating stems, petiolcd, decompound, capillary, 

 bearing many bladders; flowers 2-4 (' wide) ; spur appressed to the lower 

 3-lobed 2-saccate lip of ths corolla and about half its length. Ponds, Maine to 

 Virginia, and southward. Aug., Sept. Scape 3' - 6' high, not scaly below. 

 * # * Scape salary, 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 t 

 commonly few or fugacious : air-bladders few on the leaves or rootlets, or none. 

 -i- Flowei purple, solitary : leaves bearing a few delicate lobes. 



9. 17. resupiiiskta, 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, Maine ( Mr. Chute), E. Massachusetts, and Rhode 

 Island. Aug. 



-- t- Flowers 2-10, yellow : leaves entire, rarely seen. 



10. U. siibuluta, L. (TINT BLADDERWORT.) Stem capillary (3'- 

 5' high) ; pedicels capillary ; lower lip of the corolla Jlat or with its margins re- 

 curved, 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, pine-barrens of New Jersey, Virginia, and southward. June. Co- 

 rolla 3" - 4" broad. 



11. 17. coniuta, Michx. (HORNED BLADDERWORT.) Stem strict 

 ( - 1 high), 2 - 10-flowered ; pedicels not longer than the calyx ; lower Up of the 

 corolla 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 downward and outward, about as long as the lower lip. Peat-bogs, or 

 sandy swamps ; common. June - Aug. Flowers close together, large. 



2. PING17IC17L.A, L. BDTTERWORT. 



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

 or spotted palate. Small and stemless perennials, growing on damp rocks, 

 with 1-flowered scapes, and broad and entire leaves, all clustered at the root, 

 soft-fleshy, mostly greasy to the touch (whence the name, from pinguis, fat). 



1 P. VlllgariS, L. Leaves ovate or elliptical ; scape and calyx a little 

 pubescent ; lips of the violet corolla very unequal, the tube funnel-form ; spur 

 straightish. Wet rocks, W. New York to Lake Superior, and northward. 

 July. (Eu.) 



ORDER 72. BIGNONIACE^E. (BIGNONIA FAMILY.) 



Woody or rarely herbaceous plants, monopetalous, didynamous or dian- 

 drous, with the ovary commonly ^.-celled by the meeting of the two place nice or 

 of a projection from them, many-seeded : the large seeds with a flat embryo 

 and no albumen. Calyx 2-lipped, 5-cleft, or entire. Corolla tubular or 



