( 3665 ) 
Ipom#A BonarRIeENsis. BuEenos-AYrREs 
IpoMAA. 
Class and Order. 
PenTanDRIA Monoeynta. 
( Nat. Ord.—Convorvu.acez. ) 
Generic Character. 
Calyx 5-partitus, nudus. Corolla campanulata v. infun- 
dibuliformis, 5-plicata. Ovarium 2—3-loculare, loculis 
dispermis. Stylus indivisus. Stigma capitatum, 2—3- 
lobum. Capsula 2—3-locularis.—Herbe volubiles, quan- 
doque erecte. Folia indivisa v. lobata, nunc pinnatifida. 
Semina in quibusdam comosa. Br. 
Specific Name and Character. 
Ipomza Bonariensis ; volubilis pubescenti-subtomentosa, 
foliis petiolatis cordatis (sinu profundo) 3-lobis, lobis 
valde inequalibus lato-oblongis obtusis, inferioribus 
basi rotundatis, pedunculis axillaribus solitariis folio 
sublongioribus apice corymbosis 5—7-floris, sepalis 
ovalibus concavis membranaceis obtusis glabris, co- 
rolla infundibuliformi-subcampanulate limbo patenti 
lobis rotundatis undulatis. 
Common on ditch-banks about Buenos-Ayres, according 
to Mr. Tweepie, who sent seeds of it to this country in 
1826, and who observes that the plant has a large tuberous 
root. It thrives readily in the stove, bearing its hand- 
some flowers in August, which are not much inferior in 
beauty to those of Ipomaa insignis. . 
Descr. Stem long, twining, branched, por: clothed 
in the younger parts, as are the leaves, petioles, and pedun- 
cles, with short, but rather dense, stellated pubescence, or 
tomentum, — 
