CONVOLVULACE^E. 467 



4. I. tuba, Bon. Glabrous ; leaves cordate-roundish, apiculate, entire ; peduncles 

 1 -flowered, at length thickened; sepals subeqiial, ovate-oblong, blunt, one-third to one- 

 fourth as long as the cylindrical corolla-tube ; stamens included ; capsule globose, enclosed 

 by the calyx : seeds puberulous and villous at the hilum and along the angles. — Convolvu- 

 lus, Schlecht. Calonyction grandiflorum, Chois. : exclus. synon. — This species, confounded 

 by Choisy with Conv. grandiflorus, Jaeq., is to be compared with /. longijlora, R. Br., 

 having, as described by him, two glands at the top of the petiole. Corolla white : tube 

 2i" long, 3'" diam. ; capsule 1" diam. — Hab. S.Vincent!, Guild.; [Haiti to French is- 

 lands ! ; Guiana!]. 



Sect. 2. Operculina, 3Ianzo. — Sepals large, scarious, at length cartilaginous. Corolla 

 large, infundibular or campanulate -• tube broad, dilated from the base. Anthers in- 

 cluded, at length subcontorted. Ovary 2-celled, ^-ovulate -. no cupuliform disk. Cap- 

 sule rupturing transversely about the middle. 



5. I. ventricosa, Chois. Stem pubescent, glabrate ; leaves cordate-roundish, mucro- 

 nate-apiculate ; peduncles few-1 -flowered, at length thickened: bracts oblong, deciduous; 

 sepals ovate, rounded, one-third to one-fourth as long as the corolla ; corolla infundibular .- 

 tube campanulate ; capsule globose, large, thin above the middle, included by the growing, 

 conuiveut sepals -. seeds minutely puberulous. — Convolvulus, Berter. C. grandiflorus, Jacq. 

 {Find. 3. I. 69) is perhaps a larger-flowered form of the same, distinguished from Calonyc- 

 tion by the corolla dilated from the base. — Sepals 1", at length nearly 2" long ; corolla 

 yellowish- white, 2£"-3" long; capsule 1" diam. — Hab. Antigua!, Wullschl.; Trinidad!, 

 Cr. ; [Swedish and French islauds !]. 



6. I. pterodes, Chois. Glabrous ; stem and peduncles often 2-winged ; leaves cordate, 

 pointed, repand-entire or sinuate at the auricles ; peduncles few-1-flowered ; sepals ovate- 

 roundish, half as long as the corolla ; corolla broadly campanulate-obconical, yellow ; 

 " capsule globose." — Corolla 2" long and as broad at the summit, opening at nine o'clock 

 iu the morning {Cr.). — Hab. Trinidad!, Cr. ; [Panama!, Venezuela!, Guiana]. 



7- I. tuberosa, L. Glabrous; leaves deeply palmatifid -. segments 7, elliptical-lanceo- 

 late, pointleted, entire, peduncles few-flowered, at length thickened above ; sepals ovate, 

 rounded, half as long as the corolla ; corolla campamdate-infundibular, yellow ; capsule 

 globose, large, chartaceous, included by the grovfing, connivent sepals : dissepiment simple, 

 or at length obsolete : seeds pubescent. — SI. t. 96. f 2. — A very high climber; tuber "as 

 large as a head," not eatable ; common base to the leaf-segments 6"'-8'" diam. ; corolla 2" 

 long; capsule lJ"-2" diam. — Hab. Jamaica !, Dist., March ; [Cuba! to French islands ! ; 

 Mexico ! to Guiana ; East Indies !, trctp. Africa]. 



Sect. 3. Schizips. — Sepals membranaceous, at length leathery. Corolla campanulate- 

 infundibular, white. Anthers included, at length recurved-subcontorted. Ovary 4—2- 

 celled, ^-ovulate, supported by a cupuliform disk. Capsule dehiscent into irregular 

 valves. 



* Ovary 2-celled ; dissepiment of the capsule at length obsolete. 



8. I. dissecta, Pursh. {non IK, R. Br.). Branches pilose; leaves deeply palmatifid : 

 segments 7-5, elliptical-lanceolate, pinnatifid or sinuate-dentate, glabresccnt ; peduncles 

 l(-2)-flowered; sepals glabrous, oblong, bluntish, longer than half the corolla or half as 

 long, connivent around the capsule ; ovary 2-celled ; seeds glabrous. — Jacq. Obs. 2. t. 28. 

 — Convolvulus, L. I. sinuata, Orteg. — Leaves yielding a flavour of prussic acid; calyx 

 8"'-10"', corolla H" long, the latter white (or purplish at the base). — Hab. Jamaica !, At., 

 Dist., Berter., March ; Antigua !, Nichols., Wullschl., S. Vincent !, Guild. ; Trinidad !, Cr. ; 

 [southern United States ; and all tropical countries !]. 



** Ovary i-celled ; dissepiment of the capsule persistent. 



9. I. pentaphylla, Jacq. {non Cav.). Branches pilose; leaves 5 -partite : segments 

 elliptical or lanceolate-elliptical, pointleted, entire ; cymes lax, peduncled ; sepals ovate- 

 oblong, bluntish, unequal, 3 exterior longer, densely hirsute-pilose below, longer than half 

 the corolla or half as long, connivent around the capsule ; capsule 4-celled -. seeds glabrous. 

 —Jacq. Jc. Ear. t. 319- — Convolvulus, L. Batatas, Chois, — Exterior sepals 8"'-lQ'", their 



