about midway between Monzon and Tingo Maria. It is 
the lowland terminus of a mule trail running down the 
valley from the highland community of 'Tantamayo. 
| have also collected this species in northern Peru near 
the hamlet of Pomacochas in the Department of Ama- 
zonas, and specimens referable to C. glandulifera were 
collected in the same department by Antonio Raimondi, 
and in the Department of San Martin by Richard Spruce. 
The specimens from Amazonas differ somewhat from 
typical and topotypical material in length of petiole and 
in leaf shape, but otherwise are quite like the tree as it 
occurs in central Peru. Inasmuch as C. glandulifera has 
been found as far north in Peru as northern Amazonas, 
it very likely occurs in the intervening territory, particu- 
larly on the western slopes of those Andean ranges lying 
west of the Huallaga River. This particular inaccessible 
sector is actually one of the least known botanically in 
Peru, at least as far as the genus Cinchona is concerned. 
Unlike most other Peruvian species, C. glandulifera is 
a shrub, in its type locality averaging three meters high 
(Augusto!), and in the Pomocochas area seldom attain- 
ing a height of over two meters. It is a sun-loving spe- 
cies always occurring among other low-growing shrubs 
and grasses in open communities known among the 
Peruvians as pajonales. In Pomocochas this cinchona is 
dominant in the community in which it occurs. Such 
Mus. Bot. 21 (1940) 9). Ruiz and Pavon apparently got no farther 
than Cuchero at the confluence of the Chinchao and Huallaga rivers. 
The localities in question are both located in the Monzén River Val- 
ley which joins the Huallaga at the site of present day Tingo Maria. 
Both Chicoplaya and San Antonio de Playa Grande may be found 
on the map (‘‘Plan del curso de los rios Huallaga y Ucayali y de la 
Pampa del Sacramento’’) made by Manuel Sobreviela—one of several 
maps in the atlas accompanying Herndon and Gibbon’s published 
account of the exploration of the valley of the Amazon (Executive, 
No. 53, 33d Congress, House of Representatives, Washington, 1854). 
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