LENTIBULACE^., (bLADDERWORT FAMILY.) 319 



•*-■*-■*- Flowers all alike, few (1 -5) : pedicels erect in fruit. 

 ** Corolla yellow : scape and pedicels jili/brni : sjjitr ascendini/ or horizontal. 



5. U. intermedia, Ilayne. Lmves crowdcil oil tlic immersed stems, 

 'Z-rauk<d, 4-:') times furLid, ri</ id ; tlie divisions linciir-iiwl-shnpcd, minutely 

 bristic-tootiied along the margins, not bladder-beuriiu/, the bladders being on sep- 

 arate leiifless branches ; upptr lip of (he corulla much longer than the palate ; spur 

 conical -diloiuj, acute, oppressed to the very l,road (6" - 8") lower lip and nearly as lontj 

 as it. — SJiullow pools, New England and New Jersey to Ohio, Wiseonsin, and 

 florthward. — Leafy stems 3' - 6' long. Scapes 3' - 7' high. (En.) 



6. U. striata, LeConte. Leaves crowded or whorled on the small im- 

 mersed stems, several times forked, capillary, hiadder-hearinej ; flowers 2-5 (6" 

 broad), on long pedicels ; lips of the corolla nearly equal, broad and expanded ; 

 the upper undulate, concave, plaited-striatc in the middle; spur neeirly linear, 

 obtuse, approaching and almost equalling the lower lip. — Shallow pools in pine bar- 

 rens, Long Island, New Jersey, and southward. — Scape 8'- 12' high. 



7. U. bifl6ra, Lam. Scape (2' -5' high) I -Sflowered, at the base bear- 

 ing soniL-wliat elongated submersed branches with caj)illary root-like leaves and 

 numerous bladders ; spur oblong, erjuulling the lower lip ; seeds scale-shaped ; other- 

 wise resembles the next. — Shallow water, Illinois and southward. 



8. U. gibba, L. Scape (1 '-3' high), \ -2flowered, »\. the base furnished 

 with very slender short branches, bearing sparingly dissected capillary root-like 

 ieaves and scattered bladders ; lips of the corolla broad and rounded, nearly 

 equal; the /o!f«- with the sides reflexed (^''-S" long), cj-acf//m/ the very thick 

 and blunt coniced gibbous spur. — Shallow water, Vii'ginia to Massachusetts, N. 

 New York and N. Illinois. 



■>-<- ++ Corolla violet-purple. 

 0. U. purptirea, "Walt. ? Leaves whorled along the long immersed free 

 floating stems, jietiuled, decompound, capillary, bearing many bladders; flowers 

 2-4 (G" wide) ; spur a]ipressed to the 3-lobcd 2-saccate lower li|) of the corolla 

 and about half its length. (U. saccata, LeConte.) — Ponds, Maine to Virginia, 

 and southward. — Scape 3'-G' high, not scaly below. 



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

 in the mud or soil : leaves snudl, awl-shaped or gia.is-like, often raised out of the 

 tcater, commonly few or fugacious: air-blaelders few on the leaves or rootlets, or 

 commonly none. 



■*- Flower purple, solitary: leaves bearing a few delicate lobes. 



10. U. resupin^ta, Greene. Scape (2'-8'high) 2-bracted above; leaves 

 thread-like, on delicate creeping branches ; corolla (4"- 5" long) deeply 2-i>arted ; 

 .vpur oblong-conical, very obtuse, shorter than the dilated lower lip and remote 

 from it. l>olh ascending, the flower resting transver.-icly on the summit of the scape- 

 — Sandy margins of ponds, E. Maine to Rhode Island. 



■*- ■»- Flenvers 2-10, {chiefly) yellow: leaves entire, rarely .sent. 



11. U. COrndta, .Mlchx. Stem strict (;5'-l° high), 2 - lO-flowercd ; /W- 

 icels not longer than the califx; lowir lip of the corolla large and helnut-shapfd, its 

 centre very convex and ](rojeeting, while the sides are strongly rellexed ; upper 

 lip obovato and much smaller ; spur awl-sliaped, turned downward and outward. 



