414 LXXXT. coNVOLVULACE^. \_Ipomm. 



Stems twilling. Flowers several together in pedunculate cymes or 

 racemes, the pedicels usually short. 



Leaves cordate-ovate or lanceolate. Cymes mariy-flowered. 

 Sepals ohtuse, coriaceous. Corolla 1 in. long, white. Capsule 

 acuminate , .... 25. T. cymosa. 



Leaves narrow, not cordatei Racemes or cymes loose, few- 

 flowered. Sepals acute. Corolla small, yellow. Capsule I -celled 26. I. linifoUa. 



Leaves cordate. Cymes clense or few-flowefcd." Sepals obtuse. 

 Corolla yellow. Capsule globular, at length rugose. 

 Sepals squarrose. Corolla small. Seeds pubescent . . . ^ 27, T. cnryseides. 



Sepals not squarrose. Corolla nearly 1 in. long. Seeds gla- 

 brous 28. Lfiam. 



Stems twining. Flowers solitary or rarely 2 or 8 together, the pe- 

 duncles and pedicels mostly longer than the calyx. 

 Leaves petiolate. 



Leaves cordate-ovate, entire. Sepnls small, obtuse . . . - 29. /• ohscura. 

 Leaves ovate-lanceolate, deeply toothed or lobed below the 



middle. Sepals narrow, acute . . . , . ... • •• SO* L tncisa. 

 Leaves oMong or linear, not cordate, entire. Sepals large, 



acute, the outer ones broad and decurrent 31. /. nnifiora. 



Leaves sessile, narrow, toothed at the bnse or hastate .... 32. /. angustifo.i^* 

 Stems twining. Flowers small, solitary or several together, sessile 

 or with very short peduncles and pedicels. Leaves from cordate 

 to lanceolate. 

 Pedicels mostly about as long-as the calyx. Capsule glabrous •. 33. /• pleleia- 

 Flowers nearly sessile. Capsule pubescent or villous .... 34. I. eriocarpa. 

 Stem? erect or ascending, not twining. Leaves not cordate, usually 

 narrow. Flowers small. 



■Plant bairv. Leaves entire toothed or lobed. Flowers nearly _ ,, 



sessile , 35. I heterop^^^^' 



Plant tomentose or densely villous. Leaves entire. Flowers 



solitary or in small cymes on a more or less elongated peduncle 36. /. erecta^ 



Series VI. XJrceolatse.— i^^r^^ entire. Ovary 2-ceUed. Corolla small, nrceok ^ 

 t/ie tube broad, contracted at the throat. 



Stems twining, villous. Leaves cordate. Flowers in dense almost . . 



sessile cymes 37- /■ nrceoMa. 



Seki^s VIL Hypocrateriformes. — Leaves entire or pivvatifid. Ovary ^'^^ , 

 spuriously ^-celled. Corolla with a cylindrical narrow lube, and sj^reading near ^ J 

 limb. 



Stems twining. Leaves piunatifid, with linear -subulate lobes. ,., 



Flowers red. Ovary 4-celled . . . . , .'.'.■.". . . 38. /. Q^^^w^^'"' 



Series 1. Digitate. Leaves digltately fllvided into deep 1^^^%^^, J.J^j 

 tiiict segments or leaflets. Flowers large or small/cauipaiuilate or tuo 

 at the base. 



1. I. panicTilata, K. Br. Trod. 43G. Stems trailing or twining so°^^J 

 times to a great length, the whole plant slahrous. Leaves P'^'f ^^^'-i.tg 



J broa^ 



almost pedately divided to below the middle into 5 to 9 ovate 

 obtuse or acuminate lobBs, the whole leaf often 6 to 8 in. long an ^ 



Peduncles longer than the petiole and sometimes 8 to 10 in. long, ^f^^^^ 

 cyme of several Lirge pui-ple or pink flowers. Sepals broad, ^ery obU'^' ' 

 to 4 lines long. Corolla campanulate, shortly tubular at the base, 3 m- " 



