342 



IPOMCEA Jalapa. «. 



Jalap Ipomoea. 



PENTANDRIA MONOOYNIA. 



Nut, ord. CoMvoLVULi. Juttieu gen, 132. Div, I. Stylus uiucoB* 



CoNvoLVULACE^ Brown prod. 4^1. Sect, L GeilDin 



unicuni. 



I 



X. Jalapa ; pubescens ; foHis cordatis integrifl lobatigque plicato rugo»ii ilils 

 t^s subtotnentosis, pedunculis 1'3-flonsy foliolis calycis ovalibus muticai, 

 corollfs campanulatia, seminibus proljxd laQUginosis, radice craMissinio. 

 Pursh amer* sept^ 1. 146. 

 Ipomcca macrorhiza* Michaux bor.'Omer. 1* HI. 



Conrolrulus Jalapa. Lin. Mant 42. Hort^ Km>. 1. 211* ed^ 2* 1, SSI, 

 fVilld* sp. pL 1, 860. DesfonL in annates da museum dhisU naL 2. 12$, 

 tabb. 40- 41. 

 at) corollce limbo albo. Hujus locu 

 j3) corollae limbo roseo. Curtis s magaz, tah 1572* 



Kadix tuberosof magna, perennis* Caules kerbaceat orgytdes^ volmbif^, 

 ramosif striatic Folia ptibescentia, cordata, subtus tomentomt Integra nd 

 2'7'lobaia9 nervosa : petiolus vix duplo breuior laming* Pedunculi axillaru, 

 Solitarii, pubesceniesy breviores foliOf subtriflori $ pedicelU glandidis 2 oppo^ 

 sitis bracteolisque 2 ovalibus caducis basi muniti, Cal* paUido-vtrens, xi0oius^ 

 obhngO'Ovalist ^ undue drdtir longzts, segmentis avaltbusy obtusisy subapiQ" 

 iibus, arctius conniventibus. Cor. extlis pubescens, hypocrater^onnis^ iubui 

 subbiuncialisy cylindricus^ supemi parUm an^iatusy duplo Jer^ profundior 

 Umbo (in pr^senti spedminej corrugato. Stamina et Stylus indusa: stig, 

 subbHobo-capitalum^ d^etsum: filam* purpurethvillosa* Semina sertceo^ 

 pubesceniia^ 



It seems to be admitted that the plant with a rose- 

 coloured corolla from Mexico, and the present^ with the 

 limb of the corolla quite white, from South Carolina and 

 Georgia, are merely varieties of the same species; that 

 which aiTords the true Jalap. 



We are obliged to Mr. Herbert for the specimen we 

 have figured, as well as for an admirable drawing, made by 

 himself, of the flower. The plant was raised in the hothouse 

 at Spofforth, from seeds received from South Carolina about 

 four years ago; but never flowered in perfection till Sep* 

 tember of the present year- 



The leaves in the present plant varied much, but were 

 nearly all divided in^o a greater or less .number of lobes, 

 there being only here and there a few entire ones. Its 



