fpecies in the iflands of Tongataboo and Eaoree in the
South Sea. A fourth was fent from Martinique by Monf.
Badier, which is known by fl?e name of Quinquina Piton.
Profeflor Swartz, who fome years ago made a voyage to
the Antilles, belides increafing the vegetable catalogue of
thofe parts with eight hundred and fifty new fpecies, not-
withftanding the prior vifits of thofe indefatigable botanifts
Plunder, Sloane, Jacquin, and Brown, enriched the genus
Cinchona with two new fpecies, of which one was found
in Hifpaniola, and the other in Jamaica; which latter»
however, he defcribed from a fpecimen in Sir Jofeph
Banks’s colledlion. As an addition to all thefe, I have the
honour to exhibit three more, of which one is changed
with the Peruvian, and the two others I look upon as unknown,
not having been able to find them any where defcribed.
The genus is confequently increafed to nine
fpecies. All the fpecies which conftitute this genus
agree in the following circumftances, viz. The trunk is
a.tree: the bark of the branches is of a dark brown-red
colour, in fome fpecies covered with foft hairs towards the
extremities, but in moft fpecies without: at the bottom
thefe branches are round, and frequently of a whitilh grey,
but at the top they become imperceptibly tetragonous:
thofe which bear flowers are diftinguifbed from the others
by being alternately comprefled to the top : the leaves are
oppofite; inferted to the branch by a fhort pedicle ; their
edges are fmooth, or entire, without any denticulations;
their lower furface is fomewhat more venous, and fome-
times the oblique fibres are covered with foft hair; the
4 upper
upper furface is generally without hair: the fubftance of
the leaves is fomewhat membranaceous, and bears a re-
femblance to that o f coffee-leaves : at both fides, betwixt
the leaves, is a ftipule, which is clofely adprefled to the
branch: the peduncles fit commonly at the top of the
branches of the umbel, thefe branches being always divided
into three, o f which thelaft bears one flower only.
Two fpecies have the flowers fitting in the angle formed
by the leaves with the branches, and of thefe one fpecies
has only one flower on the peduncle. Where the peduncle
is divided into more ramifications, there are two
fmall bradteae at the larger, and one at the fmaller. The
calyx is one-leafed, above the germen, corolliform, in
the fame manner as in plants that have oppofite leaves and
ftipules. Sometimes the calyx, is only a kind of margin,
but always divided into five fmall points, and much fhorter
than the corol: the corol is funnel-form, monopetalous,
divided into five parts; the f ia m in a five, in f e r t e d at the
middle of the interior part of the tube, being either
fhorter than the tube, or of equal length with the corol;
they are flender and eredt : the germen is conical, and
bent down, with a pointed tip ; the ftyle is thread-form,
of the length of the ftamina; the ftigma thicker, and
fomewhat bipartite : the fruit is an oblong capfule, opening
in two parts. From both corners of each part -there
is a diflepiment feparated in the middle with a crevice :
the feeds are comprefled, and furrounded with a membranaceous
margin. All the fpecies are natives of the
New World, one excepted, which was difcovered by
B 2 Dr.