Utricularia. 



LENTIBULACE^E. 



21 



Annual ? Scape rooting in wet ground, 8-12 inches high, furnished with minute appressed 

 scales. Flowers closely approximated, as large as those of U. vulgaris. Pedicels with a 

 small ovate bract, and two bracteoles at the base. Sepals ovate, acute, yellowish. Corolla 

 of a firmer texture than in any other North American species, yellow ; the upper lip reflexed 

 at the sides ; lower lip much larger : palate large and prominent : spur projecting from the 

 flower, and rather dependent, very slender and tapering. 



Wet grounds, particularly about calcareous rocks. Highlands of New- York ; near Troy ; 

 about the Falls of Niagara, and sparingly in the northern and western counties. July - August. 



5. Utricularia striata, Le Conte. Striated Blaclderwort. 



Floating, or sometimes rooting in mud ; scape 4 - 7-flowered, slender, weak ; upper lip of 

 the corolla ovate-roundish, obscurely 3-lobed, somewhat emarginate, the margin waved ; lower 

 lip 3-lobed, reflexed at the sides, the intermediate lobe striate ; spur straight, obtuse, shorter 

 than the lower lip, and appressed to it. — Le Conte in Torr. cat. pi. N. York, p. 89 (1819), 

 and in ami. lyc. N. Y. 1. c. f. 4 ; Torr. jl. 1. p. 20 ; Beck, hot. p. 287 ; Tuckerm, in Sill, 

 jour. 45. p. 29 (1843) ; Alph. DC. in prodr. 8. p. 8. 



Annual ? Leaves few and usually short, sparingly furnished with air-bladders. Scape 

 6-10 inches high, furnished with 2 or 3 minute scales. Pedicels half an inch or more in 

 length. Flowers as large as in U. vulgaris, yellow. Margin of the corolla crenulate. Spur 

 straight, a little dilated in the middle, emarginate. 



Swamps and shallow waters. New-York (Le Conte) ; Long Island (Mr. Willis). Fl. July. 



6. Utricularia intermedia, Heyne. Intermediate Bladderwort. 



Floating ; scape 2 - 3-flowered ; leaves distichous, dichotomously many-parted ; segments 

 setaceous, spinulous-denticulate ; upper lip entire, twice as long as the palate ; spur conical ; 

 peduncles of the fruit erect. — Koch, syn. Jl. Germ. p. 579 ; Richards, app. Frankl. narr. 

 p. 2 ; Gray in ann. lyc. not. hist. N. York, 4. p. 227 ; Engl. hot. t. 3489 ; Hook. Jl. Bor.- 

 Am. 2. p. 118 ; Tuckerm. I. c. ; Alph. DC. in prodr. 8. p. 7. U. Millefolium, Nutt. mss. 



Perennial. Leaves oblong, cut into numerous segments like those of Yarrow. The air- 

 bladders grow on separate root-like branches. Scapes 4-8 inches high. Flowers about 

 half as large as in U. vulgaris, yellow. 



Swamps, Jefferson county (Dr. Crawe <§• Dr. Gray). Fl. June - July. A northern species, 

 agreeing in all respects with my European specimens. 



7. Utricularia minor, Wittd. Lesser Bladderwort. 



Floating ; scape about 2-flowered ; leaves somewhat 3-parted , the segments linear and 

 dichotomous , the lower obovate-flattish ; upper lip as long as the palate ; spur very short, 

 obtuse, keeled, deflexed. — Willd, sp. 1. p. 112 ; Engl, hot, t. 254 ; Gray, I. c. ; Alph. DC. 



