468 CONVOLtfULACEJ!. 



hairs 2'", corolla 15'" long.— HiB. Jamaica I, Al., March) S. KittsI, Els., Antigua I, 

 WullscU., Dominica!, Imr.; Trinidad!, Lane, Or.; [French islands !, iSVJ. A/aW. 280 ; 

 Venezuela I, Ecuador ! ; Pacific islands ! ; Irop. Asia ! and Africa I]. 



10. I., glabra, CJiois. Glabrous (or glabrescent) ; leaves ^-partite: segments e^^-^&ai- 

 lanceolate or lanceolate, pointed, shortly petiolulate, erefeVe ; cymes lax, peduncled ; sepals 

 oblong, blunt, subequal, glabrous, about half as long as the corolla, at length spreading ; 

 ovary 4-celled.— .ia*;. t. 53 ; R. P. Fl. Fenm. t. 118. *.— Convolvulus, Anbl. Batatas, 

 Benth. C. macrocalyx, %. P.— Sepals 10'", corolla li" long. — Hab. Trinidad !, Or. ; 

 [Venezuela and GuiaUa to Brazil and Peru !]. 



'11. I. quinquefolia, &r. Branches pilose or glabrescent ; leaves i-partite : segments 

 lanceolate or elliptical-lanceolate, acuminate, serrate, the middle larger; cymes few(-])- 

 flowei-ed, peduuoled ; sepals glabrous, blunt, unequal, the interior longer, oblong, about 

 half as long as the corolla, appressed to the capsde, the exterior ovate ; capsule 4-celled : 

 seeds puberulous, at length glabrate. — Desc. Fl. 6. t. 394.— Convolvulus, L. Batatas, 

 Chois. — Longer sepals 4"', coroUa 8"'-9"' long. — Hab. Jamaica !, aU. coU. ; [Cuba ! and 

 Mexico ! to Venezuela !, Bogota ! and Peru]. 



Sect. 4. Batatas, Rumph. — Sepals membranaceous, at length leathery. Corolla usually 

 large, broadly campanulate-infundibular, ventricose above the cylindrical base. Anthers 

 included. Ovary it-ovulate, 2-celled or 4i-celled at the summit by a navicular, secondary 

 dissepiment, supported by a cupulifonn disk. . Capsule dehiscent into valves : valves 

 usually irregular. 



* Ovary Z-celled to the summit ; seeds devoid of cotton. 



13*. I, Batatas, Lam. Glabrous (or branches hispidulous) ; leaves cordate, repand- 

 enUre, or.sinuatfi-S-T-lobed; cymes peduncled, usually few-flowered; peduncles as long as 

 or exceeded by the long petiole ; sepals oval or oblong, mucronate, one-ffth to one-fourth 

 as long as the corolla, 3 exterior shorter ; coroUa rosy or white ; capsule 2-oelled : seeds 

 (immature) glabrous, except a few puberulous lines.^yM*. Fl. 4. 1. 1. Desc. Fl. 8. t. 545. 

 Catesb. Car. 2. ^. 60 : bad. — Convplvulns, i. Batatas edulis, Chois. : but not agreeing with 

 his generic character. — Perhaps merely a form of the following species, transformed by cul- 

 ture. Koot tuberiferous, eatable ; longer sepals 5'", corolla 2'^lV long. 



a. Sepals and ovary glabrous, (he former oval ; leaves cordate-deltoid, repand or sinuate 

 at the auricles ; corolla rosy ; tuber brick-coloured, greenish-yello^ within {MarcK). 



0. leucorrhina. Sepals and ovary glabrous, the former obloug ; leaves 5-7(-3)-lobed 

 beyond the middle ; lobes ovate-lanceolate, acuminate, diverging, the middle usually broader ; 

 corolla variegated, rosy and white ; tubers white, elongated {March). 



y. porphyrorhiza. Sepals oval-oblong, long-ciliate ; ovary hispid ; leaves of a ; corolla 

 white ; tubers purple, yellowish-white within {March). 



Hab. Naturalized in Antigua!. Wullschl. ((3), and generally cultivated in Jamaica!, 

 March {a, p, y), the Caribbean Islands and all tropical countries ; [origin unknown, but 

 said to be American {A. DC.)]. 



13. I. fastigiata, Swt. Glabrous (or glabrescent) ; leaves cordate, pointleted, repand- 

 entire or sinuate-S-5-lobed ; cymes fastigiate, 12-few-flowered, peduncled: peduncle 

 exceeding (rarely equalling) the petiole ; sepals oblong, mucronate, one-fifth to one-fourth 

 as long as the corolla, 2 exterior shorter ; corolla purple (or white) ; capsule 2-celled : 

 seeds glabrous. — 1. oymosa, Mey. ! 1. atenocolpa, alba, and longipes, Garle. 1 : the latter a 

 form with ciliate sepals like I, Batatas, y. — Root tuberiferous (called wild potatoe in Ja- 

 maica) ; longer sepals 5'", corolla 3" long ; stem twining (while in I. Batatas it is creeping, 

 trailing, or with twining summits). 



a. Leaves cordate-deltoid, entii'e. 



0. platanifolia, R. S. Leaves cordate-3-lobed : middle lobe longer, acuminate, lateral 

 sinuate-few-dentate or entire. — Convolvulus, V. I. pandurata, Mey. JSsseq. I {exclw. syn. 

 Linn.). 



, Hab. Jamaica !, all coll. (o, rarely /3), in thickets and hedges ; Antigua !, Wullschl., Do- 

 minica !, Mnl., S. Vincent !, Guild. ; Trinidad ; [Cuba I and Mexico ! to Brazil !]. 

 ,, 14. 1. sMiioMa,,. Chois. Glabrous; leaves cordate, usually pointleted, ««<»ye; cymes 



