FRLATE . COecH 
IPOMAA GRANDIFLORA., 
Great-flowered Ipomeea. 
CLASS V. ORDER I. 
PENTANDRIA._MONOGYNIZA. Five Chives. One Pointal. 
ESSENTIAL GENERIC CHARACTER. 
EmpaLement five-cleft. Blossom funnel- 
shaped long, with a five-cleft or five- 
dentated border. Summit headed. Cap- 
| sule three-celled, with many seeds in each 
cell. 
€aLyx quinquefidus. Corolla infundibulifor- 
mis longa, limbo plicato quinquefido aut 
quinquedentato. Stigma capitatum. Cap- 
sula trilocularis polysperma, Uster’s Juss. 
Gen. Pl, 149. 
SPECIFIC CHARACTER, &c. 
Troma, foliis cordatis acuminatis —— 
pedunculis subunifloris. 
Irpom#a, with heart-shaped acuminated very 
entire leaves, and chiefly one-flowered 
peduncles. 
Convorvutus grandiflorus, foliis cordatis ovatis obtusiusculis integerrimis, pedunculis subbifloris, 
calycibus coriaceis, caule petiolisque pubescentibus. Linn. Supp, Pl. 136.—Willd. Sp. P]. 1. 859. 
en 
REFERENCE TO THE PLATE. 
1. The empalement. 
2. The tube of the flower cut open, to show the structure and insertion of the chives. 
3. The poiantal. 
4, A capsule nearly ripe, cut horizontally and lifted up to show the seeds. 
(a en EE a MIM tern ere 
Tis magnificent species of Ipomaa (the Convolvulus grandifiorus of authors) was obligingly com- 
municated to us in bloom in the month of September, by A. B. Lambert, Esq. who thinks that its root 
will only prove an annual one. If this indeed should eventually be the case, it will cause it to recede in a 
_ material manner from the Convolvalus grandiflorus as described in the Supplementum Plantarum, and 
mame ~S in Willdenow’s Species Plantarum, which is there said to be an arborescent species : from 
C. grandiflorus it should also appear to differ, in its more pointed leaves and solitary peduncles ; and 
likewise i in having a stigma agreeing altogether in structure with the genus Ipomea; which latter cir- 
cumstance has occasioned us to separate it from Convolvulus, and transfer it to Ipomeea ; 
the conformation of the stigma in those extensive genera, often (but we fear not always) affords the 
most satisfactory characters for discrimination, All their species which we have examined, (and they 
been very numerous,) possibly might be united into one genus, without committing much out- 
rage against nature, or the natural affinities of her vegetable kingdom. 
