paler colour on the outside. Stamens considerably shorter than the 
corolla, dilated and almost monadelphous at the base, where they are 
slightly ciliated, filiform in the greater part of their length. ' 
Popu.ar anp GeocrapuicaL Notice. There are few numerous 
and natural tribes of plants in which there has been more confusion 
than among those of Convolvulacez, which were comprised in the old 
genera Ipomea and Convolvulus. The few species known to Linneus 
(scarcely half a hundred) seemed at that time, indeed, to be not un- 
aptly distributed into these two groups, but now that ten times that 
number are known, the attempt to reduce the whole to these two gen- 
era has so completely destroyed the value of their Linnzan character 
that several modern botanists have proposed to consider the whole but 
as one vast genus. This course is, however, practically inconvenient, 
and would become more and more so as considerable additions are 
daily made to the species, and therefore Choisy, a careful Genevese 
botanist, in a revision of the whole order, has divided them into about 
twenty genera, founded on distinctions derived chiefly from the ovary 
and the stigma, in most cases easily examined, especially in a fresh 
state, and generally tolerably natural. Among them Ipomeea and Con- 
volvulus, as limited by him, still retain a great proportion of the species, 
and are only distinguished by the stigmas, which are globose in Ipo- 
meea, linear in Convolvulus. Jacquemontia, to which the present plant 
belongs, has the same ovary as these two, but the form of the stigmas 
is intermediate, and the eleven species of which now it is composed are 
all natives of tropical America, with a peculiar habit and rich blue 
or rarely white flowers. Vahl, indeed, gave the name of violacea to the 
variety of our species which he first described, but as he appears only 
to have known it from dried specimens, there is reason to believe he 
was mistaken in the colour, on which account we have preferred Jac- 
quin’s specific name, although of later date 
It has Jong been an inmate of our gardens, and deserves to be 
much more encouraged, its lively-coloured flowers being particularly 
ornamental to the stove in spring. The Messrs. Lee, of Hammersmith, 
Panengly supplied the plant for figuring. _ It flourishes in peat and 
| G.B. 
VATION OF THE AMES. 
Jacevemontta i in honor oft the late Victor Jacquemont, well known for his let- 
* ters, published by his family after his lamented death in India, when on his 
Pentantua five-flowered, that being the usual number of flowers on 
each peduncle in the variety described. by Jacquin 
SYNONY MES. 
eueecanae VIOLACEUS. Vahl. Symbols, v.3, p. 29. 
wage pe CANESCENS. Humboldt and Kunth: Nova Genera et Species, 
Pp 
Canvourna ye PENTANTHA. Jacquin: poones, prions, *, 2,t. 316. Botanical 
Magazine,t.2151. Bo atten Register, 
Siebesainess vioLacEa. Choisy: sot eked ene p. 139. 
