Utricularia, LXXXVI. LENTIBULACEiE. 391 



than the corolla. — Wet rocks and thin, damp soils, N. Y. (near Rochester, 

 Dewey, Beck.) N. to Arctic Am. Hooker. Scape 6 — 8' high, with solitary, nod- 

 ding flowers. Leaves all springing from the root, fleshy, spatulate or ovate, 

 with a tapering base, fleshy and unctions to the touch. Corolla with a purple 

 tube, lined with soft hairs. Flowering early in April and May. 



2. UTRICULARIA. 

 Lat utricula, a little bottle ; alluding to the air-vessels appended to the roots. 



Calyx 2-parted, subequal ; corolla irregularly bilabiate, personate, 

 spurred; sta. 2: stig. bilabiate; caps, globular, 1 -celled. — Herbs 

 aquatic,, loosely jloaii7ig or fixed in the mud. Lvs. radical, multifid or 

 linear and entire, mostly furnished with little inflated vesicles. Scape erect. 

 § Floating. Leaves capillaceous, midtifid. Roots few or 0. Branches 

 producing ticHons at apex. 



1. U. INFLATA. Walt. (U. ceratophylla. Mr._) Whorled Bladderwort. 



Upper lvs. in a whorl of 5 or 6 at the surface of the water ; petiole and mid- 

 vein inflated, lov:er lvs. capillaceous, dissected, submerged ; scape 4 — 5-flowered. 

 — 7L In ponds, Mass. to Car., W. to Ohio. The proper stem (rhizoma 1) is 

 very long, branching, suspended in the water by a single, irregular whorl of 5 

 or 6 floating, inflated leaves which are oblong, cleft, and pinnatifid at the end. 

 Flowers 4 — 5 together upon a scape 8' in length, pedunculated, with sheathing 

 bracts. Spur nearly as long as the corolla, appressed to the lower lip, striate, 

 emarginate. Cor. yellow, the upper lip broad-ovate, entire, lower 3 lobed. Aug. 



2. U. VULGARIS. (U. macrorhiza. Le Confe.) Common Bladderwort. 

 Lvs. all submersed, capillaceous, multifid, fibrillose or setaceous ; vesicles 



numerous, small; st.ov rhizoma very long, floating; scape simple, 5 — 11-flower- 

 ed ! spur conical, obtuse, shorter than the corolla. — 7]. In stagnant pools, U. S. 

 and Can. Floating stems several feet long, very branching. Leaves very nu- 

 merous, 1' in length. Utricles furnished with a fringed, valvate aperture, 

 usually inflated. Scape 5 — 10' high, stout, arising out of the water. Flowers 

 alternate, showy, yellow, b—&' long, lower lip larger, with a projecting palate, 

 striped with brown, Jn. Jl. 



3. U. INTERMEDIA. Haync. 



Lvs. all submersed, in 2 rows, dichotomously many-parted, without vesi- 

 cles, roundish in outline, segments ciliolate-denticulate ; leafless branches with 

 lateral vesicles and terminal turions ; fls. few ; lips entire ; spur conical, acute, 

 appressed to the lower lip. — % Pools, Mass. Bobbins ! R. I. Prov. Frank. Soc. 

 Floating stems branched, a foot long. Leaves about 3" long, numerous. Turions 

 much larger than the vesicles, green, scaly, producing new plants like bulbs. 

 Flowers 4—5" long, sulphur-yellow. 



4. U. STRIATA. Le Conte. 



Dvs. numerously subdivided, submerged, with vesicles; scape 2 — 6-flower- 

 ed, with a few scales ; flowers large, yellow, upper lip broad, divided into 3 

 lobes, the middle lobe striate with red, lower lip crenate, sides reflexed, having 

 dark spots upon the palate; spur slender, obtuse, with a notch at the end, 

 pressed against the lower lip of the corolla and nearly as long. — Native of 

 swamps, Mass. to Flor. Root submerged, slightly attached to the mud. Leaves 

 (radicles '?) few, capillary, appendaged with few air vessels. Scape a foot high, 

 generally with 2 flowers. June. 



5. U. GiBBA. Linn, (and Le Conte.) 



Minute, floating, leafless'? with few utricles and turions; scape about 2 

 (4 — 7, Le C)-flowered, naked, segments of the yellow corolla roundish, upper 

 lip emarginate, lower subtrilohatc, middle lobe crenate, subrevolute ; spur gib- 

 bous in the middle. — % In pools, Fl. 1., Olncy, Mass., N. Y. to Car. Submersed 

 stems dichotomous. Scapes 2 — 3' high, generally with but 2 small, yellow 

 flowers. Spur swelling outward in the middle. Jl. 



6. U. FORNicATA. Lc Contc. rU. minor. Ph.) 



Sts. numerous, fibrillose-brancned, floating, utriculate ; scape naked, 1 — 2- 

 flowered; upper lip of t/ic corolla 3-lobed, central lobe incurved over the palate, 



