ORD. XIV. CONTORTA. 
(From con, and torqueo, to twist together. ) 
Plants which have a single petal, that is, twisted or bent to one side, 
CINCHONA OFFICINALIS. OFFICINAL CINCHONA; 
Or PERUVIAN BARK TREE. > 
Cinchona, Peruvianus cortex. Pharm. Lond. & Edinb. 
SYNONYMA. Quinquina. De La Condamine, in Mem. de 
LT’ Acad. des Scien. de Paris. 1738. p. 226. cum icone tab. 5. 6. 
recusa in Rosén. Diss. de Cort. peruv. Lursen. Diss. de Cort. perwe. 
- et Pultney. Diss. de Cinchona off. 
Class Pentandria. Ord. Monogynia. Lin. Gen. Plant. 228. 
Ess. Gen. Ch. Cor, infundibulif. apice lanata. Caps. infera, 2-locu- 
laris, dissepimento parallelo.— Sem. imbricata. Jacq. 
Sp. Ch. C. foliis ellipticis subtus pnbescentibus corollz, limbo lanato. 
THIS tree is very lofty, sending off large branches, covered with 
rough brown bark: the leaves vary from an ovate to an elliptical 
shape, the larger approaching more to the former, and the smaller 
to the latter figure ; they are all entire, nerved, smooth on the upper 
side, on the under tomentose, and stand in pairs upon footstalks : 
the flowers are produced in panicles, and stand upon slender pedi- 
i > 
No. 22,—von. 2. 3T 
