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222 
do not, however, yet remark any representatives of the fine-leaved 
Lauracea and Melastomacea, so conspicuous on the Huallaga. 
There are not wanting abundance of small-flowered, perennial 
Acanthaceae, of two or three species, and the moss, which every- 
where hangs in long tufts from inundated branches, is (as on the 
Huallaga) Neckera disticha. 
of Nephrodium and a Meniscium, both found at Tarapoto. 
The mosses include a Bryum in large lax dingy patches. 
_ Vegetation of the forests of Bombonasa, near Puca-yacu.— 
Numerous ridges rise to 200 feet or 240 feet above the rivers, and 
the valleys are deep, with often steep sides, clayey or gravelly, but 
with no beds of hard rock. There is some similarity to the ground 
about and above the mouth of the Rio Negro on the left bank, 
though the hills are there of less elevation. 
Among trees there must be many new species, but none are now 
in flower. A Lecythidea, with leaves like a Lecythis, has round 
e is almost certainly a Henriquezia ; the leaves grow in 
fours, and are much longer than those of H. verticillata, A tall 
Of brushwood nearly everything seems of known genera, but 
many of the species are new. Solanums are in endless variety, a8 
through the Pastasa, but individuals of each species are few flowere 
and grow widely apart, as is usual with forest species of this genus, 
with a few exceptions. : 
The Palms are Jriartea exorrhiza and I. ventricosa, the Biroti-wasl, 
and several small Geonomas and Bactrides. 
The most striking feature of the vegetation of the gravelly slopes, 
