LENTIBULARIACEAE (BLADDERWORT FAMILY) 737' 



897. U. minor. 



scapes slender, 1 dm. high; lips of the yellow corolla nearlj^ equal in length, 

 the lower broader and 3-lobed, somewhat longer than the approximate thick 

 and blunt spur.— Ponds, N. B. to Del. and Pa., chiefly near the coast. Julv 

 Aug. Fig. 895. ^' 



t- 1- iVo cleistogamous flowers. 

 ■M- Pedicels recurved in fruit; corolla yellow. 

 3. U. vulgaris L. (Greater B.) Immersed stems 

 3-10 dm. long, crowded with 2-^-pinnately many-parted 

 capillary leaves bearing many bladders; scapes 5-12- 

 flowered, 1-3 dm. long ; corolla closed, 1-2 cm. broad, 

 896 U vul- V amer *^^ ^^^®^ reflexed ; spur conical, rather shorter than the 

 lower lip, thick and blunt. — Eurasia; n. w. Am. 

 Kepresented with us by 



Var. ainericana Gray. Spur more slender and rather acute. — Common in 

 ponds and slow streams, Nfd. to Minn., s. to Va. and Tex., and 

 westw. June-Aug. Fig. 896. 



4. U. minor L. (Smaller B.) ieaues sca«erecZ on the thread- 

 like immersed stems, 2-4 times forked, short; scapes weak, 2-8- 

 flowered, 0.5-2 dm. high ; upper lip of the gaping corolla not 

 longer than the depressed palate ; spur very short and blunt, or 

 almost none. — Shallow water, e. Que. to B. C, s. to N. J., w. 

 N. Y., Great L. region, Utah, and Cal. May-July. (Eu.) Fig, 

 897. 



•w. 4-f Pedicels erect in fruit, few and slender; corolla yellow. 



5. U. glbba L. Scape 2.5-10 cm. high, 1-2-flowered, at base 

 furnished with very slender short branches, bearing sparingly dis- 

 sected capillary root-like leaves and scattered bladders ; corolla 

 6-8 mm. broad, the lips broad and rounded, nearly equal ; the 

 lower lip with the sides reflexed, exceeding and approximate to the 

 very thick and blunt conical gibbous spur, — Shallow water. Me. 



TT ^-KKo to ^1^- ^^^d Ala., near the coast ; and from w. Vt. to Ont., 111., and 



u. glbba. C.Minn." July-Sept. Fig. 898. 



6. U. biflbra Lam. Scape 0.5-1.3 dm. high, 1-S-flowered, at the base bearing 

 somewhat elongated submersed branches with capillary root-like leaves and 

 numerous bladders ; corolla 8-13 mm. broad, the spur 



oblong, equaling the lower lip ; seeds scale-shaped. — 

 Ponds and shallow waters, Mass. to Fla. ; and from 

 Wise, and Minn, to Ala. and Tex. Aug., Sept. Fig. 

 899. 



7. U. fibrbsa Walt. Leaves crowded or whorled on 

 the small in)mersed stems, several times forked, capil- 

 lary ; the bladders borne mainly along the stems ; flowers 

 2-6, 1-1.3 cm. broad ; lips nearly equal, broad and ex- 

 panded, the upper undulate, concave, plaited-striate in 

 the middle ; spur nearly linear, obtuse, approaching and 

 almost equaling the lower lip. — Shallow pools in pine 899. U.bifiora. 

 barrens, L. I. and N. J. to Fla. and Ala. May-July. 



8. U. intermedia Hayne. Leaves crowded on the im- 

 mersed stems, 2-ranked, 4-5 times forked, rigid, the divi- 

 sions linear-awl-shaped, minutely bristle-toothed along the 

 margins ; the bladders borne on separate leafless branches ; 

 upper lip of corolla much longer than the palate ; spur 

 conical-sulmlate, acute, appressed to and nearly as long as 

 the very broad (1-1.5 cm.) lov^er lip. — Shallow pools and 

 streams, Nfd. to B. C, s. to N. J., Pa., Great L. region, 

 la., and Cal. May-July. (Eurasia.) Fig. 900. 



++++++ Pedicels erect in fruit, rather long ; corolla violet-purple. 



9. U. purpurea Walt. Leaves whorled along the long immersed free-floating 



gkay's manual — »47 



900. U. intermedia. 



