HABITAT OF THE CINCHONAS. 91 
Of the most closely related species, Cascarilla heterocarpa,’ C. 
magnifolia,? and C. Riveroana,? the Remijia pedunculata is distin- 
guished by the axillary inflorescence, by smaller capsules,* and the 
leather-like leaves. In plate XXVI of the Flore Columbie 
Specim. select., mentioned in section XVIII, Karsten completes the 
above description’ of R. pedunculata (still designated by him as 
Cinchona) by a handsome figure of the same. 
According to Triana’ the two last named species are very 
positively distinguished from each other. The calyx teeth of 
Remijia Purdieana are much longer than the calyx tube, and 
nearly linear, the stipules sharply lanceolate, and the capsules 
more slender than in Remijia pedunculata. The short calyx teeth 
of the latter are roundish triangular, and the broad stipules obtusely 
ovate. 
Both species of Remijia afford the barks described below as 
Cinchona cuprea, and must therefore, at least the Remijia pedun- 
culata, occur abundantly in the wide domain from the Magdalena 
river to the eastern declivities of the Cordilleras, southeastward 
from Bogota. 
SECTION IV. 
HABITAT OF THE CINCHONAS, 
The Cinchonas are confined to the Cordilleras, whereas the 
other Cinchonee inhabit a far more extended area under the most 
diverse climatic relations. In other districts of South America, 
which apparently fulfill the same physical conditions as the cinchona 
belt of the Cordilleras, no true cinchona trees have indeed as yet 
been met with. 
1 Karsten, tab. VI. 
* Howard, WV. Quino/., tab. X ; presumably not different from C. heterocarpa. 
* Figured under the incorrect name of C. Ruizii in Weddell’s Hist. nat. des 
Quinguinas, tab. XXIII. 
* The pear-shaped capsules of Remijia pedunculata, dehiscing from the apex, for 
which I am indebted to Dr. Triana, are 8 millimeters (about three-tenths of an inch) in 
length, with a maximum diameter of 5 millimeters (one-fifth of,an inch). 
* Flor. Columb. Specim. sel. 54, where the diagnosis is embraced in the following 
words: ‘‘Cinchona foliis cortaceis, danceolatis vel ellipticis, calvis, subtus in costa 
nervisque paullum pilosulis; stipulis magnis obovatis quam petioli longioribus; in das? 
connatis, extus pilosis, intus ad basin area triguetra imo serie villorum tectis ; cymis 
axillaribus foliis longioribus, corymbiformibus, pedunculo communi longissimo, ramis 
minute bracteolatis ; corollis membranaceis, extus sericeis, limbi laciniis supra barbatis ; 
staminibus tubo coroll# medio insertis, inclusis; filamentis glabris, brevibus; azther- 
arum rimis ciliatis; capsulis compressis, sublignosis, lanceolatis, 15 ad 18 millimetr. 
longis, ab apice ad basin, rarius a basi ad apicem, septicide dehiscentibus, pilis minutis 
adpressis ; seminum ale ciliato fimbriate, imperforatz.”’ 
* Pharm. Journ. XII (1882), 862; also Journ. de Pharm.V, 567. 
