36 
the Annales de Ciencias Naturales de Madrid,* has ventured 
to prove that almost all the efficacious species, enumerated by 
Ruiz and Pavon, can be reduced to four, viz. C. lancifolia, 
C. oblongifolia, C. cordifolia, and C. ovalifolia; described by 
Mutis, in the year 1793, in the literary news of Santa Fe de- 
Bogota.+ 
Indeed I hardly know any one tree varying more in the shape- 
of its leaves than the Cinchona. Whoever determines single spe-- 
cimens of dried collections, and has no opportunity to.examine or. 
observe them in their native forests, will, as is the case with the. 
Broussonettia papyrifera, be led to discover different species by 
feaves which are of one and the same branch. The yellow bark, 
C. pubescens, Vahl, we have found at one and the same time with 
fol. ovato-oblongis, evato-lanceolatis, and ovato-cordatis. Mutis 
calls.it C. cordifolia, because it is the only kind on which'some-. 
times cordate leaves are found. The same species varies like the. 
white Cinchona, C. ovalifolia, Mut. (C: macrocarpa, Vahl) fo- 
hits utrinque levibus and foliis utrinque pubescentibus. These 
varieties are- represented in. those. well executed coloured draw- 
ings which. M. Mutis presented me during my residence in Santa 
Fe, and which have been deposited, together with a complete 
hortus siccus of my expedition. to the tropics, in the Jardin 
des Plantes at Paris. Even the laurel-leaved C. Condaminea; 
the finest bark from Uritusinga, has very diversified leaves, 
according to. the altitude. at which it grows, and which equals 
that of Saint Gothard’s or Mount. Etna. It would. deceive the. 
_bark-peelers (cascarilleros), themselves, if they did not know 
- the tree by the glands, left so long unobserved by botanists. In 
Gonzanama, not far from Loxa, we made a ‘great number of im=- 
* Anno 1801, No. 5. 
+. Papel Periodico de Santa Fe, 1793, inn: big. 
