™ 
by Pinkneya pubens Michaux,* a tree which T found cultivated 
together with C. Caribea in the excellent botanic garden of Mr. 
Hamilton near Philadelphia. The Pinkneya grows on Mary’s 
River, in the province of Georgia, and is already described by 
Bartram, propter calycis laciniam unicam foliaceam bractewfor- 
mem, by the name of Mussuenda bracteolata. The medicinal 
powers for the cure of ague possessed by this plant, nearly al- 
lied to the genus Cinchona, and growing without the tropics, 
have not yet been investigated. On the other hand Mr. Wal- 
ker has shown in two excellent treatises, that the bark of Cor- 
nus florida trom Virginia, and of C. sericea from Pensylvania 
and South Carolina, and even the Tulip tree (Liriodendron 
Tulipifera) may be used with advantage in North America as 
remedies against agues.t In the kingdom of New Spain, where 
hitherto no species of Cinchona has been discovered, as the cu= 
rator of the Academical Botanic ‘Garden at Mexico has assured 
me, the yet undescribed Portlundia mexicana, discovered by 
M.Sesse, may supply the place of the Cinchona bark of Loxa. In 
the East Indies (according to D. Klein in Tranquebar) the Swie- 
tenia febrifuga, figured by Roxburgh, a plant of Swarz’s and 
Jacquin’s, Portlandiu hexandra (Aublet’s Coutaria Speciosa), 
nearly allied to Cinchona, produces the bark of French Guyana, 
known in France by the name of Ecorce Sebrifuge de Cayenne,t 
and which is no more derived from a Cinchona, than is the bark 
of Cumana or the Cuspare of Angestura. 
- Thus much respecting the genet 
ing the ge © characters of the plants 
which approximate to Cinchona, and all of which belong to the 
* Flor, Americana, I. p. 105. 3 | 
_ t Walker on the virtues of the Cornus and the Cinchona compared. Philad. 1803, Rogers's 
Diss, on the properties of the Liriodendron. Phil. 1802, ee 
+ Ventenat Tableau du Regne Vegetal, t. ii. p.578. 
