Utrictdaria.] xciv. lentibularie.e (stapf). 495 



quite different from that of Siooularia, an American genus. The corolla is rather 

 peculiar on account of the very short and wide sac-like spur and the widely gaping 

 mouth, but the upper and lower lips are quite distinct, the latter being so constricted 

 at the base as to be almost cordate 



;52. U. obtusa, Swart:, Nov. Gen. etSp. PI. 14. An aquatic herb, 

 floating or creeping on liquid mud, sometimes matted into extensive 

 felt-like masses. Stolons long, branched, finely filiform, fiat, green, 

 glabrous, frequently with arrested buds in the leaf-axils from the bases 

 of which spring small whorls of leaves and stolons. Leaves all alike, 

 about 2-3 lin. apart, forked from the base or near it, 2 1 — 5 lin. long ; 

 partitions usually forked again above the middle, or entire ; ultimate 

 •segments capillary, smooth, flexuous. Bladders usually in the place of 

 1 or 2 of the ultimate leaf-segments and also near the tips of the 

 stolons, obliquely ovoid, up to J lin. long, mouth sublateral, oblique, 

 oblong, fimbriate, finibrise unequal, longest branched, insertion of stalk 

 lateral. Scapes lateral, filiform, erect, 2-4 in. long, 4-1-flowerecl, with 

 or without 1 or 2 minute scales. Flowers distant if more than 2 ; 

 bracts rotundate-oblong, J-f lin. long ; bracteoles ; pedicels filiform, 

 permanently straight, obliquely erect, at length up to 5 lin. long. Sepals 

 equal, rotundate-ovate, 1 lin. long, green, enlarged in fruit, orbicular and 

 over 1 J- lin. in diam. Corolla yellow, 3-5 lin. long; upper lip broad- 

 ovate, obtuse, entire, 2 J- lin. long; lower lip rotunclate, 2| lin. long, with 

 a large raised 2-gibbous palate ; spur conic, rather slender, obtuse or 

 .subacute, about 3 lin. long. Anthers § lin. long. Ovary subglobose ; 

 style very short ; upper stigmatic lip obscure ; lower suborbicular. 

 Capsule globose, 1-J lin. in diam. ; seeds elliptic-orbicular, lenticular, 

 up to almost £ lin. in diam., with an opaque corky wing all round. 

 Embryo lenticular, up to J lin. long. — Swartz, Fl. Ind. Occ. i. 41 

 (obtusata) ; DC. Prodr. viii. 10 ; Benjam. in Mart. Fl. Bras. x. 239 ; 

 Ivam. in Engl. Jahrb. xxxiii. 113. U. trier enata, Baker ex Hiern in 

 Cat. Afr. PI. Welw. i. 785. U. sp. nov. ? aff. U. gibber., Oliver in 

 Journ. Linn. Soc. ix. 147. 



Lower Guinea. Angola : Huilla; muddy shore of Lake Ivantala, 4000 ft., 

 Welioitsch, 270 ! backwaters at the junction of the Chitanda and Cunene Rivers, 

 3660 ft., Baum, 123 ! 



Also throughout Tropical America. Kamienski indicates this species also from 

 Stanley Pool {Duchesne). 



oo. 



U. exoleta, P. Br. Prodr. 430. An aquatic herb, floating in 

 water or creeping on liquid mud. Stolons of varying length, much 

 branched ; branches often fascicled, from a few inches to almost 1 foot 

 long, very slender, flat, green and leafy or bleached and almost naked. 

 Leaves varying considerably in the degree of development, rarely more 

 than 2 lin. long, very sparingly dissected, usually one or several of the 

 segments represented by bladders, or the whole leaf replaced by a bladder, 

 normal segments delicately capillary, glabrous. Bladders obliquely 

 globose-ovoid, rarely more than J lin. long, mouth subapical, truncate 

 with delicate branched cilia. Raceme 3-2-flowered or reduced to a 

 single flower ; peduncle slender, filiform, straight or flexuous, 2—3 in. 



