27C LENTIBULACE.E. (BLADDERWORT FAMILY.) 



air-bladders on their lobes : roots few and not affixed, or none. (Mostly 

 propagated from year to year by a sort of buds.) 



t- Flowers all alike, yellow, several in a raceme : pedicels nodding in fruit. 

 2. TJ. Vlllgaris, L. (GREATER BLADDERWORT.) Immersed stems 

 (l-3 long) crowded with 2 - 3-pinnately many-parted capillary leaves, bearing 

 many bladders; scapes 5 - 12-flowered (6'- 12' long) ; lips of the corolla closed, the 

 sides rcflexed ; spur conical, stretched out towards the lower lip, shorter than it. 

 Ponds and slow streams ; common. June - Aug. Corolla ' - ' broad ; 

 the spur rather less broad and blunt than in the European plant. (Eu.) 



3 U. minor, L. (SMALLER BLADDERWORT.) Leaves scattered on the 

 thread-like immersed stems, 2-4 times forked, short; scapes weak, 3 - 7-flow- 

 ered (3' -7 high) ; upper lip of the gaping corolla not longer than the depressed pal- 

 ate ; spur very short, blunt, turned down, or almost none. Shallow water, N. New 

 York to Wisconsin, and northward. July. Corolla 2" - 3" broad. (Eu.) 

 - - Flowers of 2 sorts ; viz. the usual sort (3-7) in a raceme, their pedicels ascend- 

 ing, the corolla yellow ; and more fertile ones solitary and scattered along the leafy 

 steins, on short soon reflexed peduncles, fruiting in the bud, the corolla minute and 

 never expanding. 



4. U. claildestlna, Nutt. Leaves numerous on the slender immersed 

 stems, several times forked, capillary, copiously bladder-bearing ; scapes slen- 

 der (3' -5' high) ; lips of the corolla nearly equal in length, the lower broader 

 and 3-lobed, somewhat longer than the approximate thick and blunt spur. 

 Ponds, E. Massachusetts, Rhode Island, W. New York, and New Jersey. 

 July. Flowers as large as in No. 7. 



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

 - Corolla yellow : scape and pedicels Jiliform. 



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

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

 bristle-toothed along the margins, not bladder-bearing, the bladders being on sep- 

 arate leafless branches ; upper lip of the corolla much longer than t/ /><il</ti< : spur 

 conical -oblong, acute, oppressed to the lower lip and nearly as long as it. Shallow 

 pools, New England to Ohio, Wisconsin, and northward : ran-. June, July. 

 Leafy stems 3' -6' long. Scapes 3' -7' high. Flowers ' broad. (Eu.) 



6. U. Stl'iata, Lc Conte. Leaves crowded or whorled on the small im- 

 mersed stems, srrcnil times forked, capillary, bladder-beaming ; flowers 2-5, on lor.g 

 pedicels; lips of the corolla nearly equal, broad and expanded, the upper undu- 

 late, concave, plaited-striatc in the middle ; spur marly linctn; obtuse, approaching 

 and almost equalling the lower Up. Shallow pools in pine barrens, Long Island, 

 New Jersey, and southward. July, Aug. Scape 8'- 12' high. Flowers Abroad. 



7. U. gibba, L. Scape (l'-3' high), 1 -2-fowred, at the base- furnished 

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



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

 equal ; the Inuvr with the sides reflexcd (4" -5" long), tjr,-lin</ the (ip/imniiuth 

 thick mid blunt gibbous spur. Shallow water, Massachusetts to lllinoi.-, and south 

 \vai\l al;: g the mountains. Julio - Aug. 



