IN THE CINCHONA FORESTS 283 
I have no doubt, from their resinous juice, belong to the same 
order. 
MeliacecB^ i. — A species of TrichiHa, called Muruvillo, whose 
bark is held as a febrifuge, barely enters the Bark region at San 
Antonio, but does not extend up to it at Limon. A tallish tree, 
with pinnate leaves and very large serrated leaflets, which was 
putting forth large terminal panicles when I left the woods, 
probably belongs to this order. 
ZygophyUecE^ i. — A fine tree of 40 feet, with large opposite 
pinnate leaves ; it is closely allied to Guaiacum, though scarcely 
referable to that genus. 
Podostemacece. — The w^ithered remains of at least three species 
were observed on granite rocks in the river San Antonio, and 
they are the first of the family I have seen in the Andes. 
OxalidacecE. — ^At San Antonio grow two species of Oxalis, 
both of which I have previously gathered, the one on the eastern 
side of the Andes near Bahos, and the other at Pallatanga on 
the western side. 
Caryophyllacece. — A solitary species of each of the genera 
Stellaria and Drymaria growls very sparingly. In ascending 
the eastern side of the Andes, I first came on a Stellaria at 
between 2000 and 3000 feet. This order, frequent enough in 
the upper regions of the Andes, seems to exist in the plains at 
their base only in the genera Polycarpaea, Drymaria, and Mollugo, 
all three very scarce on the Atlantic side, but the last-named very 
abundant on the Pacific side. 
PortuIacecE. — A Portulaca grows in sandy places inundated by 
the Rio San Antonio. 
Polygonece. — A Triplaris, apparently identical with that observed 
at Puma-cocha, and possibly distinct from T. Sicrinamensis, 
extends a little way into the territory of the Red Bark, and in 
descending from thence becomes more abundant all the way 
down to the plain, w^here it is called by the Guayaquilians Arbol 
de frios or Ague tree. Its presence, indeed, is a pretty sure 
indication of a humid site. 
Amara7ttacecB, i.— A woody twiner. There are besides two or 
three weedy plants of this order, probably species of Telanthera. 
ChenopodecE. — Two common weeds ; one of them being the 
ubiquitous Chetwpodhim ambrosioides, which grows with almost 
equal luxuriance in the elevated 'central valley of the Andes and 
in the plains of the Amazon and Guayaquil. 
PiperacecB, 5. — Species of this order are very numerous. I saw 
perhaps as many as twenty, belonging chiefly to the genera 
Artanthe and Peperomia. A very fine pepper, resembling Artanthe 
eximia, Miq., but a still handsomer plant, grows towards the lower 
limit of the Bark region. The stem is 20 feet high, slender and 
perfectly straight, and beset with short, distant, nearly horizontal 
