( 3978 ) 



Ipom^a Tweediei. Mr. Tweedie's 

 Ipomtea. 



******************** 



Class and Order. 

 Pentandria Monogynia. 



( Nat. Old. CoNVOLVULACEiE.) 



Generic Character. 



Calyx 5-partitus, nudus. Corolla campanulata v. in- 

 fundibuliformis, 5-plicata. Ovarium 2 — 3-locuIare, locu- 

 lis dispermis. Stylus indivisus. Stigma capitatum, 2 — 3- 

 lobum. Capsula 2 — 3-locularis. — Herbae volubiles, quan- 

 doque erectce. Folia indivisa v. lobata, nunc pinnatifida. 

 Semina in quibusdam comosa. Br. 



Specific Name and Character. 



Ipom^ea Tweediei; volubilis glabra, foliis cordatis acutis 

 integerrimis basi profunde bilobis petioli longitudine, 

 pedunculis axillaribus bi- unifloris, sepalis ovatis acu- 

 tis imbricatis inaequalibus, corollae tubo elongato su- 

 perne in limbum ampliato. 



A very pretty Convolvulaceous plant, sent some years 

 a S°y by Mr. Tweedie, from woods of the Parana, to the 

 Royal Botanic Garden of Glasgow. It is No. 120 of Mr. 

 Tweedie's collections of dried plants. At the time the 

 drawing was made, the structure of the stigma was neglect- 

 ed to be observed. The genera of this family have lately 

 been studied by Choisy, and the result of his labours, in 

 part, laid before the public. That able Botanist keeps 

 Convolvulus and Ipom^ea distinct; but Endlicher in his 

 " Genera" unites them ; making of them, however, differ- 

 ent sections, distinguished, the one (Convolvulus), by the 

 le Stigmata linear i-cylindrica/' and the other (Ipom^ea), by 

 the " Stigmata capitato-globosa." I think it will be found 

 that our present plant belongs to the latter. 



Descr. 



