28 ORD. XIV. Rubiacezx. CINCHONA. 
of so many full-grown trees, by stripping them of their bark; after which, 
it is said, they always die.* It is chiefly found in the neighbourhood of the 
village Ayavaca, in the woods of Caxanuma, Uritusinga, Monge, and. Villo- 
naco. This species of cinchona usually grows singly ; whereas most of the 
others are usually found in groups. This handsome free rises to the height 
of thirty or forty feet ; its trunk is erect, and measures from fifteen to twenty 
inches in diameter, and is covered with a rough, blackish-brown, or ash- 
. coloured bark, which exudes when wounded, a yellow, astringent juice: 
the branches are round, in opposite pairs, erect, brachiated, the younger ones 
obscurely quadrangular at the joints: the eaves are about four inches long, 
ovate, lanceolate, of a bright shining green, having a little depressed gland 
in the axils of the nerves on the under side, which is filled with an astringent 
aqueous fluid, having its orifice shut with hairs; they stand on fvotstalks, 
about one-sixth of their length, flat above, convex below, and of a purple 
colour :+ the stipules are two,—supra-axillary, acute, silky, contiguous, and 
caducous : the flowers are odorous, of a very pale rose-colour, and furnished 
with small bracteas ; they are produced in terminal, brachiated, trichotomous, 
lealy, panicles, supported upon round peduncles and pedicels, which are pow- 
dered and silky: the calyx is of a globular bell-shape, five toothed, powdered 
and silky, like the peduncles, with the teeth very short, ovate, acute, con- 
tiguous, and purplish: the corolla is somewhat salver-shaped, with linear, 
lanceolate segments, much shorter than the tube: the anthers are twice the 
length of the free portion of the filaments, and the free parts are two-thirds 
shorter than the adherent :{ the germen is globular: the capsule woody, 
ovate, longitudinally ten-striated, two-celled, many-seeded, oppositely twice 
furrowed, opening from the apex to the base with two valves, and crowned 
with the permanent calyx.|| 5 
* Condamine however asserts, that the young trees do not die by losing their bark, 
but send out fresh shoots from the base. 
+ The leaf is said to vary in form, according to the altitude at which the tree gTOWS ; 
particularly before it comes into blossom. 
{t Humboldt. : 
| This species of Cinchona will be found figured under the name of Cinchona offici- 
nalis, in vol. ij. ¢.91. of this Work. 
