NAT. ORDER. 
Convolvulacece. 
IPOMiEA HORSFALLIiE. MRS. HORSFALL'S IPOM^A. 
Class V. Pentandria. Order I. Monogynia. 
Gen. Char. Calyx, five-parted. Corolla, campanulate, five-petalled. 
Stigma, capitate, two to three-lobed. 
Spe. Char. Stamens, five. Filaments, glabrous. Germen, globose. 
This is a tender evergreen. The stem is twining, of great length, 
glabrous, and also all the other parts of the plant ; the root of this 
plant is a roundish, somewhat pear-shaped tuber, extremely blackish, 
internally white, with long fibres proceeding from its lower part, as 
well as from the upper root-stalks. A tuber produced by Dr. Cole, 
was, in its third year, between two and three inches in diameter. 
In so extensive a genus as the one before us, and where many 
of the species are necessarily very imperfectly described, we are un- 
der the necessity of being very cautious how we constitute new ones : 
it was not until after a very careful comparison of the present plant 
with all the descriptions he had access to, and with a very extensive 
collection of the genus in his herbarium, that Dr. Hooker, of Glasgow, 
considered it to be new and gave it the name of the lady to whose 
kindness he was indebted for the drawing. The seeds were brought 
from Africa or East Indies. It produces a lovely blossom in great 
profusion in the months of December and January, a season when so 
gay a visitor is particularly welcome to all lovers of flowers. 
The flowers, which are large, and of a lilac-purple color, stand 
upon peduncles about as long as the petioles. Each flower supports 
Vol. hi.— 181. 
