20 



LENTIBULACE.E. 



Utricularia. 



2. Utricularia purpurea, Walt. Purple Bladder wort. 



Floating ; leaves (or roots ? ) verticillately branched , the capillary branches furnished with 

 air-bladders ; scapes mostly 1- (sometimes 2 - 3-) flowered ; upper lip of the corolla truncate 

 and emarginate, the lower 3-lobed, the lateral lobes concave ; spur conical, flattened, entire, 

 appressed to the lower lip, and half its length. — Walt. fl. Car. p. 64 ; Pursh, fl. 1. p. 15 ; 

 Nutt. gen. 1. p. 13 ; Torr. fl. 1. p. 20 ; Bigel. fl. Bost. p. 8 ; Le Conte, I. c. p. 77. /. 9 ; 

 Beck, hot. p. 288 ; Alph. DC. in proclr. 8. p. 5. U. saccata, Ell. sk. 1. p. 21. 



Stem often 2-3 feet long. Scapes 2-4 inches long, axillary, naked. Sepals obtuse or 

 emarginate. Corolla purple ; the lower lip large, and moderately lobed ; the middle lobe 

 pressed upperward by the spur : palate small. 



In the State of New-York (Niittall). I have not found this species within our limits ; but 

 there can be little doubt that it grows in some of the ponds on Long Island, as it is common 

 in the neighboring parts of New-Jersey. Fl. August. 



3. Utricularia vulgaris, Linn. Common Bladderwort. 



Floating ; stems branching ; leaves many-parted, furnished with air-bladders ; scapes 

 5 - 9-flowered, bracteate ; upper lip of the corolla entire or obscurely lobed, broadly ovate ; 

 lower lip entire, with the sides deflected ; spur conical at the base, attenuated and entire at 

 the tip, incurved. — Linn. sp. 1. p. 18 ; Engl. hot. t. 253 ; Pursh, fl. 1. p. 16 ; Bigel. fl. 

 Bost. p. 8 ; Torr. fl. 1. p. 18 ; Beck, hot. p. 287 ; Alph. DC. in proclr. 8. p. 6. U. macro- 

 rhiza, Le Conte, I. c. p. 73. /. 2 ; Darlingt. fl. Cest. p. 7. 



Stems often 2-4 feet long, branching. Scape 6-10 inches long, usually from 5- to 6- 

 flowered. Leaves pinnately and dichotomously divided into numerous capillary segments, 

 which are copiously supplied with air-bladders. Pedicels about half an inch long, with large 

 ovate membranaceous bracts at the base, recurved after flowering. Calyx persistent ; the 

 sepals concave, obtuse ; lower one somewhat emarginate. Corolla yellow, two-thirds of an 

 inch in diameter ; lower lip crenulate on the margin, faintly striate with red : palate large and 

 prominent, striate with red. Style as long as the stamens : stigma 2-lipped ; the upper lip 

 small and truncate , the lower fringed. 



Ponds and slowly flowing streams ; rather common. Fl. June - July. Fr. August. I 

 am not able to discover any essential difference between our plant and the U. vulgaris of 

 Europe. 



4. Utricularia cornuta, Michx. Sharp-horned Bladderiwrt. 



Scape rooting, erect, slender, strict and rather rigid, 2 - 3-flowered ; the flowers sessile ; 

 lower lip of the corolla very broad, somewhat 3-lobed ; spur very acute, projecting. — Michx. 

 fl. 1. p. 12 ; Pursh, fl. 1. p. 16 ; Nutt. gen. 1. p. 14 ; Bigel. fl. Bost. p. 8 ; Torr. fl. 1. 

 p. 20 ; Beck, hot. p. 287 ; Alph. in DC. proclr. 8. p. 22. U. personata, Le Conte, I. c. 

 p. 77 ; Beck, I. c. 



