Utricularia. LENTIBULARIACE.E. 315 



U. inflata,"Walt. Inflated petioles of the whorled leaves oblong or clavate, tapering to 

 each end, the bases of the lower divisions also inflated ; setaceous divisions pinnately 

 inultifid : scape 3-10-flowered, a span or so long : pedicels recurved after flowering : flow- 

 ers rather large, yellow : spur conical-lanceolate, emarginate, appressed to and half the 

 length of the lower lip: capsule apiculate with a short distinct style: seeds globular, 

 squamose-echinate. Car. 64 ; Ell. Sk. i. 20; A.DC. Prodr. viii. 4 ; Gray, Man. ed. 5, 318. 

 U. ceratophyl/a, Michx. Fl. i. 12 ; LeConte in Ann. Lye. N. Y. i. 73, t. 6, fig. 1. Floating 

 in still water, Maine to Texas along the coast. 



2. Scape leafless, ernersed from submersed or floating leafy stems, which are 

 free swimming and mostly rootless in deep water, or in some sparingly rooting 

 where the water is shallow : leaves dissected into capillary or filiform divisions, 

 some or many of them (as also stems) bearing small bladders : chiefly perennial, 

 or continued by hybernacular tuber-like buds set free in autumn. 



* Ck'istogamous flowers along the submersed copiously bladder-bearing stems. 



U. dandestina, Nutt. Leaves of the slender stems repeatedly forked : scapes slender, 

 3 to 5 inches high, 3-5-flowered: corolla yellow, 3 lines long; lips nearly equal in length, 

 the lower broader, somewhat surpassing the approximate thick and obtuse spur : cleisto- 

 gamous flowers scattered on the leafy stems ; their short peduncle soon deflexed : seeds 

 (from the clandestine blossoms) depressed-globular; the coat minutely reticulated. Herb. 

 Greene, & in Gray, Man. ed. 1 (1848), 287. U. striata, Tuckerm. in Am. Jour. Sci. xlv. 29, 

 not of LeConte. U. r/emtniscapa, Benjamin in Linn. xx. 305 ? But that may be a form 

 of U. intermedia. Ponds, from New Brunswick and New England to New Jersey, near the 

 coast. 



* * No cleistogamous flowers. 



H Pedicels (few or several) recurved in fruit : corolla yellow. 



U. vulgaris, L. Stems long and rather stout, densely leafy : leaves 2-3-pinnately 

 divided, very bladdery : bladders about 2 lines long : scapes a foot or less long, 5-16-flow- 

 ered : corolla (half inch or more broad) witli sides of lips reflexed ; upper nearly entire, 

 hardly longer than the prominent palate : spur conical, porrect toward the slightly 3-lobed 

 lower lip, shorter than it, in the N. American plant (var. Americana) commonly narrower 

 and less obtuse than in the European. Lam. 111. t. 14 ; Engl. Bot. t. 2-33; Fl. Dan. 

 t. 138; Gray, Man. 1. c. U. macror/iisa, LeConte, 1. c. Slow streams, &c , Newfoundland 

 and Saskatchewan to Texas, and west to California and Brit. Columbia. (N. Asia, Eu.) 



U. minor, L. Leaves scattered on the filiform stems, repeatedly dichotomous, small, se- 

 taceous : bladders barely a line long : scapes slender, 3 to 7 inches high, 2-8-flowered : 

 corolla pale yellow, 2 or 3 lines broad, ringent ; upper lip not longer than the depressed 

 palate of the lower: spur very short and obtuse. Fl. Dan. t. 128; Engl. Bot. t. 254 ; 

 A.DC. 1. c. U. setncea, Hook. Fl. ii. 118, ex char. Shallow still waters, Canada and 

 Saskatchewan to New Jersey, mountains of Utah and Nevada, northern Sierra Nevada, 

 and Brit. Columbia. (Eu., Siberia.) 



-1 -I Pedicels erect in fruit, few and slender: corolla yellow. 

 -H- Spur of corolla thick and conical, shorter than the lower lip and approximate to it. 



U. gibba, L. Branches delicate, root-like: leaves sparse, sparingly dissected, capillary, 

 sparingly bladder-bearing: scape filiform, 1A to 3 inches high, 1-2-flowered : corolla 3 

 lines broad ; the lips broad and rounded. Spec. i. 18 (Gronov. Fl. Virg.) : Pursh, Fl. i. 116. 

 U. pumi/ii, Walt. Car. 64'? Benjamin in Linn. xx. 313. U. fornicata, LeConte, 1. c. U. 

 minor, Torr. Fl. N. Y. ii. 21, not L. Shallow water, Massachusetts to Alabama and 

 Illinois. Apparently in a subalpine pond in Colorado, Greene. 



U. bipartlta, Ell. Sk. i. 22, from St. John's, S. Carolina, said to have "spur scarcely 

 half as long as the corolla, very obtuse," and "lower lip of the calyx generally 2-cleft, 

 sometimes divided to its base " (an anomalous character), has not been identified. 



H- +-t- Spur of corolla narrower, equalling or little shorter than the lower lip. 

 = Scapes 2 to 4 inches high, 1-3-flowered : corolla less than half an inch broad. 

 U. biflora, Lam. Floating or submersed stems filiform, small: dichotomously dissected 

 leaves delicately capillary, usually copiously bladder-bearing: spur narrowly oblong, 



