468 CONVOLVULACEiE. 



hairs 2"', corolla 15'" long.— Hab. Jamaica!, Al., March; S. Kitts!, Els., Antigua!, 

 Wullschl., Dominica!, Imr. ; Trinidad!, Lane, Or.; [French islands \, Sieb. Mart. 280; 

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



10. I. glabra, Choi*. Glabrous (or glabresceut) ; leaves ^-partite: segments elliptical- 

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

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

 ovary" 4-celled.— Aubl. t. 53 ; R. P. Fl. Peruv. t. 118. b— Convolvulus, Aubl. Batatas, 

 Benth. C. macrocalyx, R. P.— Sepals 10'", corolla 1£" long.— Hab. Trinidad !, Or. ; 

 [Venezuela and Guiana to Brazil and Peru !]. 



11. I. quinquefolia, Gr. Branches pilose or glabrescent ; leaves 5-partite : segments 

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

 flowered, peduncled ; sepals glabrous, blunt, unequal, the interior longer, oblong, about 

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

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

 Ohois.— Longer sepals 4"', corolla 8"'-9'" long.— Hab. Jamaica !, all coll. ; [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 4-ovulate, 2-celled or ^-celled at the summit by a navicular, secondary 

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

 usually irregular. 



* Ovary 2-celled to the summit ; seeds devoid of cotton. 



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

 entire, or sinuate-Z-1 -lobed ; cymes peduncled, usually few-flowered; peduncles as long as 

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

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

 (immature) glabrous, except a few puberulous lines. — Tuss. Fl. 4. 1. 1. Desc. Fl. 8. t. 545. 

 Catesb. Car. 2. t. 60 : bad. — Convolvulus, L. Batatas edulis, Chois. .- but not agreeing with 

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

 ture. Root tuberiferous, eatable ; longer sepals 5'", corolla 2"-li" long. 



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

 at the auricles ; corolla rosy ; tuber brick-coloured, greenish-yellow within (March). 



/3. leucorrhiza. Sepals and ovary glabrous, the former oblong; 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. porphyrorhisa. Sepals oval-oblong, long-ciliate ; ovary hispid ; leaves of a ; corolla 

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



Hab. Naturalized in Antigua!. Wullschl. 0), and generally cultivated in Jamaica!, 

 March (a, 0, 7), the Caribbean Islands and all tropical countries ; [origin unknown, but 

 said to be American (A. DC.)~\. 



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

 entire or sinuate~3—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. cyinosa, Mem. I I. stenocolpa, alba, and longipes, Gark.l : the latter a 

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

 maica) ; longer sepals 5'", corolla 2" long ; stem twining (while in I. Batatas it is creeping, 

 trailing, or with twining summits). 



a. Leaves cordate-deltoid, entire. 



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

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

 Linn.). 



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

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



14. I. sidifolia, Ohois. Glabrous ; leaves cordate, usually pointleted, entire ; cymes 



