288 LENTIBULARIACE^:. 



3. U. '(tii u>r Linn. : floating ; leaves dichotomously divided, the segments 

 linear and r eta' EOUS, furnished with air bladders ; scape about 2-flowered ; 

 upper lip emargr'natc, as long as the palate ; spur very short, obtuse, keeled, 

 deflexed. U. gibba forr. FL. not of Linn. 



Ponds and sw?Rjr* N. Y. and Mass. June. '}.. Leaves furnished with 

 air bladders. Scap. St -4 inches high. Flowers small, dull-yellow. 



Lesser Bladderwort. 



4. U.fornicata It^onte: floating; scape naked, 1 2-flowered; upper 

 lip 3-lobed, the middlo l obe arched over the palate ; spur incurved, conoidal, 

 obtuse, very entire, e pressed to the lower lip of the corolla. U. minor 

 Pursk. U. gibba Eli. not of Linn. 



Swamps and ditches. N. Y. to Geor. Aug. Q. Root furnished with air 

 bladders. Scape naked. Flowers few, small, yellow. Incurved Bladderwort. 



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

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

 long as the lower lip of the corolla. U. subulata Pursh. U. pumila Walt. 



Swamps. Can. to Flor. and Louis. June. 1J.. Scape very slender, 4 6 

 inches high, furnished with scales. Flowers many, small, yellow. Upper lip 

 of the corolla half the size of the lower. Setaceous Bladderwort. 



6. U. intermedia Heyne : floating ; leaves distichous, dichotomously many- 

 parted, without air bladders ; segments setaceous, spinulose-denticulate ; 

 scape 2 3-flowered, upper lip entire, twice as long as the palate ; spur 

 conical, acute ; capsule erect. (D. C.) 



Swamps. Mass. Green. Jefferson county, N. Y. Gray. Arct. Amer. 

 Hook. June, July. 1\.. Leaves oblong, cut into numerous segments like those 

 of yarrow. The air bladders grow in separate root-like branches. Scape 4 8 

 inches high. Plovers about half as large as in U. vulgaris, yellow. 



Intermediate Bladderwort. 



7. U. resupinata Greene: radical leaves resembling roots, somewhat 

 whorled, capillary, furnished with air bladders ; scape 1-flowered, erect, 

 slender ; lip cylindraceous, obtuse, 4 times as long as the corolla. (D. C.) 



Plymouth, Mass. Greene. (J)? Plant 3 6 inches long, slender. Flower 

 solitary, yellow ? The only description which I have seen of this species is that 

 given in De Candolk, Prod. via. 11, from a specimen furnished by Mr. Tucker- 

 mann. Resupinate Bladderwort. 



8. U. cornuta Mich. : scape rooting, erect, rigid ; flowers 2 3, sessile ; 

 upper lip of the corolla bbovate, entire ; lower lip very broad, somewhat 

 3-lobed ; spur very acute, projecting and dependent. 



Wet rocRs. Can. to Car. W. to Lake Superior. July, Aug. %. Scape 10 

 inches high, with minute appressed scales. Flowers yellow, approximate, nearly 

 sessile, as large as those of U. vulgaris. Sharp-horned Bladderwort. 



9. U. striaia Le Conic : floating ; scape 4 7-flowered ; upper lip of the 

 corolla ovate-roundish, 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. 



Swamps and shallow waters. Mass, to Flor. June, July. r l\.. Root spar- 

 ingly furnished with air vessels. Scape nearly a foot high. Corolla large, yel- 

 low, striated with red ; spur much shorter than the lower lip. 



Striated Bladderwort. 



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



