PlNGUICTJLA. 



LENTIBULACE^E. 



19 



cylindrical, as long as the corolla. — Linn. sp. 1. p. 17 ; Engl. lot. t. 70 ; Beck, lot. p. 286 ; 

 Hook. fl. Bor.-Am. 2. p. 118 ; Alph. DC. in prodr. 8. p. 28. P. acutifolia, Michx. fl. 1. 

 p. Ill 



Root fibrous. Leaves forming a radical cluster, obovate-oblong, fleshy, obtuse, involute on 

 the margin. Scape 3-5 inches high. Flower purple, drooping. Upper lip of the corolla 

 smaller than the lower, 2-lobed ; lower lip unequally 3-lobed : palate covered with white hairs. 



Wet rocks about Genesee Falls, Rochester. May. Michaux's specimens of P. pumila 

 were only gathered in fruit, but they almost certainly belong to this species. A very rare 

 plant within the limits of the United States, having hitherto been found only in New-York, 

 Michigan and Wisconsin. It is a common species in Europe. 



2. UTRICULARIA. Linn. ; Endl. gen. 4193. BLADDERWORT. 



[ So named from uiriculus, a little bladder ; the submerged leaves of many species being furnished with air-vesicles.] 



Calyx of two nearly equal entire sepals. Corolla personate, spurred at the base underneath. 

 Stamens 2 : filaments connivent, incurved : anthers often constricted in the middle, opening 

 longitudinally. — Herbaceous (always perennial ? ) plants, growing in water or in very wet 

 places ; the radical submersed leaves furnished with small air-bladders, which at first are 

 filled with water ; but about the flowering time, this is replaced with air, so as to raise the 

 scape out of the water. After flowering, the air escapes, and the plant sinks to ripen its 

 fruit at the bottom. Roots often confounded wilh the leaves. The scapes are naked, or 

 furnished with a few scales ; and the flowers are in racemes, spikes, or solitary. 



1. Utricularia inflata, Walt. Spongy -leaved Bladder wort. 



Floating ; upper leaves verticillate, with inflated and spongy petioles, dichotomously 

 branching at the extremity and furnished with air-bladders ; lower lip of the corolla 3-lobed ; 

 spur conical, flattened, emarginate. — Walt. fl. Car. p. 54 ; Ell. sk. 1. p. 20 ; Tor?', fl. 1. 

 p. 18 ; Bigel. fl. Bost. p. 8 ; Alph. DC. in prodr. 8. p. 4. U. ceratophylla, Michx. fl. 1. 

 p. 12 ; Pursh, fl. 1. p. 15 ; Le Conte, N. Amer. Utric. in ann. lyc. N. Y. 1. p. 73. t. 6. 

 f. 1 ; Beck, hot. p. 286. 



Perennial. Stem long and slender. Lower leaves (roots ? ) finely divided, and furnished 

 with air-bladders : uppermost leaves 4-6 in a whorl near the surface of the water ; the 

 petiole oblong-cylindrical, finely branched at the extremity, of a delicate spongy texture. 

 Scape 6-8 inches long, 5 - 7-flowered ; the lower pedicels elongated, so as to give the 

 flowers a corymbose appearance. Sepals ovate, concave. Corolla yellow, about three-fourths 

 of an inch in diameter ; upper lip broadly ovate, obscurely lobed or crenate ; lobes of the 

 lower lip crenate : spur about half the length of the lower lip, to which it is appressed, marked 

 with three strias. Fruit nodding. 



Ponds on Long Island ; not found hitherto in any other part of the State. Fl. August. 



3* 



