474 CONVOLVULA.CE&. 



by abortion, pubescent. — SI. t. 98./. 2.— Convolvulus toraentosus, L. (Pharbitis, Chois).— 

 Sepals 5"'-8'", corolla-tube 2"-2i" long. 



a. Leaves sericeous or pubescent, chiefly "beneath ; calyx pubescent. 



P. glabruta. Leaves glabrate or puberulous beneath ; calyx glabrous. — Desc. PI. 2. 

 t. 137. 



Hab. Jamaica!, Mac/., Al., Wullschl., March (a, /3), in canefields; [Panama 1]. 



3. JACQUEMONT1A, Chois. 



Character of Ipomasa, but stigmas 2, distinct, oval or ovoid. — Twining herbs ; cymes 

 long-peduncled ; calyx herbaceous ; corolla campanulate-infundibular ; anthers included; 

 ovary 2-ceHed, ^-ovulate: no cupuliform disk. 



46. J. tamnifclia, Gr. Pilose ; leaves subcordate-deltoid, repand-eutire ; cymes many- 

 flowered, contracted, bracteolate, peduncled ; sepals linear-acuminate, hispid, exceeding or 

 equalling the corolla; corolla blue; stigmas ovoid; capsule 4-valved: seeds miuutelv 

 scabrous— Dill. Elth. t. 818. /. 410.— Ipomcea, L. Convolvulus, Mey.l— Sepals 6"'-4"\ 

 corolla 4'" long. — Hab. Nevis ; Trinidad!, Cr. ; [French islands!, iu fields; southern 

 United States ! to Brazil !]. 



4. CONVOLVULUS, L. 



Character of Ipomcea, but stigmas 2, diverging, filiform or clavate-oblong. — Corolla cam- 

 panulate-infundibular ; anthers included ; ovary 2-celled, ^-ovulate. 



Sect. 1. Clavula. — Stigmas clavate-oblong. Ovary devoid of a cupuliform disk. — 

 Stem herbaceous. 



* Cymes contracted, peduncled. 



47- C. pentanthus, Jacq. Twining, glabrous (or pubescent) ; leaves cordate-ovate, 

 pointed, entire or repand ; cymes contracted, bracteate, peduncled ; sepals herbaceous, half 

 as long as the corolla, hairy or glabrescent, devoid of bristles, 3-2 exterior larger, ovate, 

 pointed, 2-3 interior ovate-lanceolate or lanceolate, acuminate ; corolla violet, stellate ; 

 capsule 4-valved -. seeds glabrous. — Jacq. Ic. Rar. t. 316. C. violaceous, V. (Jacquemontia, 

 Chois. : but the stigmas exactly as in the other Clavula). — Hab. Jamaica !, Dist., WHs., 

 Match, Wullschl., in hot, dry places ; Antigua !, Wullschl., Dominica !, Imr. ; Trinidad !, 

 Sch., Cr. ; [Cuba ! and Mexico 1 to Peru !]. 



** Peduncles \-flowered or terminated by an umbelliform cyme. 



48. C. ovalifolius, V. Creeping or diffuse, glabrous (or " pubescent ") ; leaves oval 

 or oval-roundish, emarginate or blunt, entire ; peduncles \-few{-" 7 ")-fiowered ; sepals 

 herbaceous, half as long as the corolla, glabrous, 3 exterior ovate, blunt, 2 interior ovate- 

 lanceolate, pointed; corolla small, blue; capsule 2-4-valved : seeds glabrescent, ronghish, 

 margined. — Ipomcea, Chois.?: but stigmas of the preceding. — Sepals 2'", corolla 4"' long; 

 seeds black. — Hab. Antigua !, Wullschl. ; [trop. Africa]. 



*** Pedicels fascicled : peduncle short or none. 



49. C. micrantlros, R. S. Twining, pubescent ; leaves cordate-oblong, mucronate- 

 bluntish, repand or sinuate ; pedicels fascicled, as long as the short petiole ; sepals herbace- 

 ous, ovate-lanceolate, pointed, little exceeded by the corolla, subequal ; corolla minute, 

 purple : limb 5-fid ; capsule 4-valved : seeds glabrous, rugulose, margined. — Plum. Ed. 

 Burm. t. 94. /. 2. — Jacquemontia, Don. C. poly carpus, Kth. — Sepals 14'", corolla 2'" 

 long ; seeds yellowish-brown. — Hab. Jamaica !, Macf, Dist., March, Wullschl. ; S. Vin- 

 cent !, Guild. ; Trinidad !, Lockh., Sch. ; [Cuba ! to Brazil !]. 



50. C. jamaicensis, Jacq. Twining, glabrescent ; leaves lanceolate-linear (or oblong- 

 lanceolate), bluntly mucronate, entire, shortly petioled ; pedicels fascicled -. peduncle usually 

 exceeding the petiole ; sepals small, membranaceous, one-fourth as long as the corolla, 

 pointed, 2 exterior ovate-lanceolate, 3 interior roundish ; corolla pale-puvple or white : 

 limb 5-fid ; capsule 4-8-valved : seeds minutely scabrous, margined with narrow wings. — 



