294 



t>f the style, hence 2-lobed or a single style : fruit capsuki'fi 

 Variously dehiscing or dry'^bacc&.te, indehisOent, 1-4-celled: 

 cells 1-2- seeded: dehiscence of the capsules valvate: seed 

 subtriaiT;ular, rounded on thie back, glabrous or villous, testa 

 u^iually hard-: albumen mucilaginous: cotyledons foliacebus, 

 coirrgated, radicle incurved, inferior.— Herbs, undershrub^, 

 shrubs or trees: stems straight, procumbent Or twining, para- 

 sitical and leafless (in Guseuta) : leaves alternate, simple^ entire 

 or lobed, sessile of petioled : flowers one or several on axillary 

 peduncles forming cymes, racemes, umbels or corymbs or often 

 capitula : pedicels often bibracteate ; bracts sometimes enwrap- 

 ping the flowers : roots simple, or tuberous : pubescence often 

 shining and beautiful. 



GENUS I. RIVEA. 



l^entaiiilria nioiiosynift. Sex -. Sysi : 



Deriv. Dedicated by Choisy to Augiiste de la Rive, a Phyai- 

 ologist of Geneva. 



Gen. Ch.vb. Sepals 6 ; corolla showy,' tubular or funnel-shap- 

 ed : style one : stigma capitate or lamelHform, 2-lobed : ovary 

 4-celled, 4-oVuled : capsule baccate. — Twining sufii-uticose plants, 



(i) R. Titi;£FOLiA. {Choisy.) 



ideni. Choisy. Conv. or. p. 25; — Dec. prod. IX. p. 325. 



Syti. Convolvulus tiliaefolius, Desv. Enc. — C. gangeticus, 

 Itoxb. — Ipomsea tiliaefolia, Roem. ^ Schuli. — I. gangetica, Sweet. 

 •'^I. ttielanostidtaj Don. 



Enffrav. "Wight's Idon. t. 1358. 



Spec. Char. Twining, greyish pubescent : leaves rolindish- 

 cordate, sometimes obtuse, sometimes acuminate, pubescent beneath^ 

 petioled: peduncles short, 1-3-flowered : sepals roundish obtuse, 

 afterwards enlarging: corolla inflato-eylindrical: fruit coriaceous, 

 enclosed within the enlarged calyx : flowers pale rose, With a dark 

 purple eye. 



Coirabatore and elsewhere, in low moist soil, flowering during the 

 autumnal rains. 



