UTRICULARIA. ] LENTIBULARIACE^. 165 



opening by 2-4 valves or circumscisslle or bursting irregularly. 

 Seeds minute, without albumen. Species about 200, found in all 

 parts of the world, except in arid regions, 



UTRICULARIA, Linn. ; Fl. Brit. Ind. iv, 328. 



Herbs floating and rootless, or on wet ground and rocks, often 

 furnished witb minute bladder-like insect-traps. Leaves rosulate, 

 or when submerged many-partite with capillary segments. Flowers 

 on simple or branched scapes ; racemes few or many-flowered, pedicels 

 bracteate and often 2-bracteolate. Calyx 2-pirtite ; lobes entire or 

 nearly so, often enlarged in fruit. Corolla 2-lipped ; upper lip entire 

 or emarginate ; lower larger, 3-6-lobed ; tube with a straight or 

 curved spur. For characters of stamens, ovary, fruit and seeds see 

 the family. Species over 100, in the tropical and temperate regions 

 of both hemispheres. 



Inflorescence held up above waj^r by a whorl 

 of floats on the peduncle . . . . 1. U. stellar is. 



Inflorescence without floats on the peduncle : 

 Peduncles stout ; pedicels reflexed in 

 fruit, bearing usually more than 3 

 flowers; seeds not cr scarcely winged . 2. U.flexuosa. 



Peduncles slender, pedicels erect in fruit, 

 bearing 1-3 flowers ; seeds distinctly 

 winged 3. 17. exoleta. 



1. U. stellaris, Linn. f. Suppl.86 ; Roxb. Fl. Ind. i, 143 ; F. 8. I. iv, 328 

 Prciin Beng. PI. 780 ; Coolie Fl. Bomb, u, 316. 



An aquatic herb. Stolons and leaves floating under the surface of the 

 water. Stolons long and usually rather slender, sparingly branched. Leaves 

 ^-1 in. long, often in whorls of four, pinnately divided into capillary 

 segments, each primary segment furnished near the base with a small 

 roundish bladder, the mouth of which is truncate. Racemes erect, 

 slender, few-12-flowered, rising above the surface of the water ; peduncles 

 1-8 in. long, each suspended by a whorl of spongy floats attached about ^ 

 in. below the lowest flower, each float tipped with a tuft of filiform 

 pinnae ; ^bracts small, ovate, obtuse, bracteoles none ; pedicels T ^-i in. 

 long 1 , thickened, usually deflexedin fruit. Calyx ^-^ in. long ; segments 

 nearly equal^ suborbicular, enlarged in fruit. Corolla yellow, in. iu 



entire. 



