LENTIBULARIE^:. 287 



ous compressed air vessels. Stem 8 inches high. Flowers large, 

 yellow, subcorymbed. Bladdcrwort. 



2. U. vulgaris Linn. : floating ; stems submerged, dichotomous ; 

 leaves many-parted, margins bristly ; scape 5 9-flowered ; upper lip 

 of the corol entire, broad-ovate; spur conical, incurved. U. macro- 

 rhiza Le Conte. 



HAB. Pools and ponds of deep water. Can. to Car. Aug. If. 

 Root much branched. Scape 8 10 inches high. Flowers 

 large, racemed, yellow ; spur entire at the apex and rather ob- 

 tuse. 



3. U.fornicata Le Conte: floating ; scape 1 2-flowered ; upper lip 

 3-lobed, the middle lobe arched over the palate ; spur incurved, conoi- 

 dal, obtuse, very entire, appressed ta the lower lip of the corol U. mi- 

 nor Pursh. Torr. U. gibba Ell. 



HAB. Swamps and ditches. N. Y. to Geor. Aug. 21. Root 

 furnished with air vessels. Scape naked. Flowers few, small, 

 yellow. According to Capt. Le Conte, it bears no resemblance 

 to U. minor of Europe, except in the smallness of its flowers. 



4. U. setacea Mich. : scape filiform, rooting, with 2 or more flowers; 

 upper lip of the corol ovate ; the lower deeply 3-lobed ; spur subulate, 

 as long as the lower lip of the corol. U. subulata Pursh. U. pumila 

 Walt. 



HAB. Swamps. N. Y. to Flor. June. 1. Scape very slender, 

 4 6 inches high, furnished with scales. Floicers many, small, 

 yellow. Upper lip of the corol half the size of the lower. 



5. U. gibba Gron. : floating ; scape mostly 2-flowered ; spur short- 

 er than the lower lip of the corol, obtuse, gibbous in the middle. 



HAB. Ponds. N. S. July. If.. Scape 23 inches high, (47- 

 flowered. Le Conte.) Flowers small, yellow. Spur swelling 

 out in the middle. 



6. U. cornuta Mich. :' scape rooting, erect, rigid ; flowers 2 : 3, sub- 

 sessile ; lower lip of the corol very wide, 3-lobed ; spur very acute, 

 porrected. 



HAB. Wet rocks. Can. and N. S. On Lake Superior. Dr. 

 Houghton. Aug. U.. Scape 10 inches high, with minute 

 bracts. Flowers yellow, approximate, nearly sessile, as large as 

 those of U. vulgaris. 



7. U. striata Le Conte : floating ; scape 2 6 flowered ; upper lip of 

 the corol ovate-round, subemarginate, margin waved; lower lip 3-lobed, 

 reflected at the sides ; spur straight, obtuse, shorter than the lower lip. 

 U.fibrosa Ell. not of Walt. 



HAB. Swamps. N. Y. to Flor. June. It. Root furnished 

 with air vessels. Scape a foot high. Corol large, yellow, stri- 

 ated with red ; spur much shorter than the lower lip. 



8. U. personata Le Conte: scape rooting, many-flowered; upper lip 

 of the corol emarginate, reclinate ; lower small, entire ; palate very 

 large ; spur linear subulate, somewhat acute. 



