Ipomcea.~] ci. CONVOLVULACEJE. (C. B. Clarke.) '203 



upwards, purple. Ovary 4-celled. Capsule 4-celled, or by suppression 3-1 -celled. 



The Sweet Potato ; though that term is given to yams in Bengal. iSaid to fruit 

 rarely. 



STTBGENUS 6. Euipomsea. Sepals subequal, or the outer somewhat 

 larger, especially in fruit. Corolla funnel-shaped or campanulate, glabrous 

 without oi' \ eiy nearly s. >. Stamens included. Ovary 2-celled, 4-ovuled, 

 rarely imperfectly 4-celled near the base. Capsule 2-celled, 4-2-seeded, rarely 

 1-celled and 1-seeded. This subgenus is designed to include all the species of 

 Ipomeea not distinctly referable to any one of the 5 preceding subgenera. 



* Flowers capitate, ; bracts persistent. 



17. I. pileata, JRo.vb. FL Ind. i. 504, and ed. Carey $ Wall. ii. 94 ; 

 sparsely hairy, leaves ovate-cordate acute entire, heads many-fid, enclosed by 

 a large boat-shaped bract, corolla tubular-funnel-shaped pink. Chois. Convolv. 

 Or. 74, and in DC Prodr. ix. 365; Wight in Calc. Journ. Nat. Hist. viii. 179, 

 t. 5, fig. 5, and Ic. t. 1363 ; Dalz. fy Gibs. Bomb. FL 166. Convolvulus pileatus,. 

 Spreng. Sijst. curae post. 61 ; Wall. Cat. 1376. 



ASSAM, BENGAL to TENASSEBIM ; ascending to 4000 feet. DECCAN PENINSULA and 

 CEYLON; frequent. 



Stems annual, twining, patently hairy. Leaves 2-3 in. cliam., deeply cordate, 

 mostly long-petioled. Peduncles 1-4 in. ; outer bracts l-2 in., entire, produced or 

 almost auriculate at each end ; inner ovate or subspathulate. Sepals elliptic, acute, 

 inner narrower, very hairy. Corolla-tube f by ^ in., linear-cylindric ; mouth 1^ in., 

 suddenly widened. Capsule in., subglobose, papery. Seeds smooth. Easily known 

 by its boat-shaped outer bract, /. involucrata, Beauv. Fl. Owar. et Ben. ii. 52, t. 89, 

 of W. Africa has a similar bract, and Choisy (in DC. Prodr. ix. 365) doubts if this 

 can be kept distinct. It differs, however, inter alia, by the corolla-tube \ in. 

 wide. 



18. I. Wig-hill, Chois. Convolv. Or. 88, and in DC. Prodr. ix. 364; 

 leaves ovate-cordate acute entire angular or sublobate softly villous above 

 white-woolly beneath, heads long-peduncled, outer bracts lanceolate acuminate, 

 corolla middle-sized pink-purple, capsule minutely pubescent. Wight Ic. t. 

 1364. Convolvulus Wightii, Wall. PI. As. Rar. ii. 55, t. 171 ; Wall. Cat. 

 1406. C. gossypinus, Wall. Cat. 1407. 



MTS. of the DECCAN PENINSULA; Nilgherries, Pulneys, Bababooclan Hills, Wight,' 

 &c. CKYLON ; Central Provinces, alt. 2-3000 ft. 



Stems twining, fulvous-villous. Leaves 3-4 in. diam., sinuate-denticulate, rarely 

 obscurely 3-lobed ; petiole 2 in. Peduncles 2-5 in. ; heads 1-2 in. diam., dense, 

 fulvous-hirsute; outer bracts 1 in., inner shorter linear. Sepals ^-f in., linear- 

 lanceolate, subequal, fulvous-hirsute, scarcely altered in fruit. Corolla 1 % in., sparsely 

 hairy without. Capsule \ in. diam., subglobose, papery. Seeds puberulous. I. 

 pilpsa has the leaves similarly whitened beneath, but the flowers are not capitate, 

 and the capsule not pubescent. 



19. I. bracteata, Wight Ic. t. 1374 ; hairy, leaves ovate-cordate acute 

 entire, heads peduncled, outer bracts ovate-cordate, corolla small narrow-cam- 

 panulate purple-pink. 



S. DECCAN PENINSULA ; Quilon, Wight. 



Stems weak, twining, patently hairy. Leaves 1-2 in. diam., softly thinly hairy 

 on both surfaces; petiole l in. Peduncles i-2 in. ; outer bracts f in., deeply 

 cordate; inner smaller, ovate or elliptic," obtuse/ Sepals % in., spathulate-oblong, 

 inner smaller, linear-lanceolate. Corolla in., nearly glabrous without. Capsule 

 not seen The sepals are much more unequal (even at flower-time) than in Wight's 

 picture ; it might be placed in subgenus Aniseia. When dry it greatly resembles. 

 Hewitt ia bicolor. 



