CINCHONA. ~ ORD. XIV. Rubiacez. : 29 
CINCHONA CORDIFOLIA.* 
The cinchona cordifolia is a native of Peru, where it grows in great abun- 
dance, on a long chain of mountains that extend to the north and south of 
Loxa. The soil in which it thrives best, is generally a red clay or rocky 
ground, and particularly on the banks of small rivers, descending from the 
mountains,t flowering from May to September. 
The stem is of no great thickness, erect, round, and covered with a smooth 
bark, externally of a brown grey colour; the branches are spreading, the 
younger ones quadrangular, smooth, leafy, sulcated, and tomentose; the 
leaves are opposite, spreading, about nine inches long, entire, and varying 
much in form, being oblong, ovate, or cordate; of a shining green on their 
upper surface, ribbed and pubescent underneath, and standing upon pur- 
plish footstalks, which are plain on one side, and roundish on the other: 
the flowers are produced in terminal, leafy, panicles, supported on long 
tetragonous flattish peduncles: the calyaz is of a dull purple colour, downy, 
and five-toothed: the corol/a is internally tomentose, white above and 
purplish below; its segments spreading with reflected lips; the tube of a 
pale red colour: the filaments are short, and support linear, bifid anthers : 
the germen is tomentose: the capsule narrow, oblong, about an inch and a 
half in length, of a reddish-brown colour, and crowned with the permanent 
calyx. Fig. (a) the corolla spread open: (6) the calyx and style: (¢) an 
anther: (d) the style and stigmas. Our figure was copied from that given 
in the Flor. Peruv. tom. ij. 52. t. 193: : 
* If this plant be the Cinchona cordifolia of Mutis, and of Mr. Lambert, the follow- 
ing is the specific character given by the latter author :— 
' Cinchona cordifolia. Leaves roundish ovate, acute, heart-shaped, or attenuated at 
the base; beneath, as well as the branches, somewhat hairy; above, glabrous and shin- 
ing ; panics brachiate, diffuse, pubescent; calycine teeth broadly rounded, mucronulate ; 
stigma two-lobed ; capsules oblong-ovate, cylindrical, without ribs. 
Mr. Lambert considers this to be the true cordifolia of Mutis, MSS. of Rohde, Mo- 
nogr. eS Humb. Nov. Gen. v. iii. p. 401. (but excluding the synonyms there adduced, 
of the Flora Peruv. Linn. Vahl. & Lambert). 
+ Phil. Trans. vol. xl. p. 83. 
