& ov 
IX. 
XITT. 
XIV. 
XV. 
XVI. 
XVII. 
XVIII. 
XIX. 
XX. 
XXII. 
XXII. 
430 
View on a river terrace 5 meters above low water. This terrace is never 
flooded. Trees present on left of the trail are Dipterocarpus verni- 
cifluus, Grewia stylocarpa, Cyathocalyx globosus ; on the right Cyatho- 
calyx, Ellipanthus luzoniensis, Shorea concorta, Dipterocarpus verni- 
cifluus. Note the abundance of bamboo, rattans, shrubby under- 
growth and lianas. Anisoptera-Strombosia formation. 
. A terrace similar to that shown in Plate LX, with the undergrowth 
removed. Note the density of the forest, prevalence of low buttress 
roots, and the dead hanging lianas. Anisoptera-Strombosia formation. 
. View on a terrace similar to that shown in Plate X. Note the prevalence 
of trees with fairly regular trunks. Anisoptera-Strombosia formation. 
. Another view of a river terrace where the forest has an uneven profile. 
Note the large dominant Dipterocarpus vernicifluus with a tall buttress 
root. Anisoptera-Strombosia formation. 
View across a banana field, showing in the background the irregular 
profile of a part of the Anisoptera-Strombosia formation. 
View on a slope with a gradient of about 15 degrees. Passing from left 
to right are the following trees: Anisoptera vidaliana (with crooked 
trunk), the anonaceous Yylopia dehiscens, Shorea polysperma (large 
tree near the center), Gnetum gnenom (well in the background), and 
Xanthophyllum sp. Note the prevalence of lianas (principally Age- 
lea wallichii), rattans, and fairly good reproduction. Amsoptera- 
Strombosia formation. 
Vegetation on a slope of 35 degrees. Note the absence of many large 
trees and presence of rattans. Trees are Strombosia philippinensis, 
Gnetum gnenom, Aporosa symplocosifolia, Cyclostemon bordenii, ete. 
Anisoptera-Strombosia formation. 
Vegetation in an open place where a species of Oalamus (limoran) 
forms a dense growth. Shorea-Plectronia formation. 
A species of Ficus or “balete” inclosing the trunk of Orypteronia cumin- 
gii. Note the large root on the right. Shorea-Plectronia formation. 
Shows the character of the bark of Pithecolobium acle; also a young 
plant of Schefflera venulosa starting in the soil accumulated in a knot 
hole. This latter species has the “balete” habit. Anisoptera-Strom- 
bosia formation. 
A species of Ficus enveloping a tree of Bischofia trifoliata. Shorea- 
Plectronia formation. 
Shows the characteristic, net-like growth of a species of Ficus on San- 
tiria nitida. Anisoptera-Strombosia formation. 
View in the interior of a forest of the Shorea-Plectronia formation. 
Note the large buttresses of Hugenia glaucicalyx. Large tree on the 
right in the background is Shorea polysperma. Other trees shown 
are Plectronia viridis (several specimens on the right), Cinnamomum 
mercadoi, Palaqium tenwipetiolatum, Thea montana, Memecylon edule, 
and Ternstreemia toquian. Note the scarcity of undergrowth and 
forest litter, and the presence of crustaceous lichens on the trunks 
of the trees. Photograph taken in Plot A, Table XIX. 
View in the interior of a portion of the Shorea-Plectronia formation on 
a slope of 25 degrees. On the left is a large tree of Hugenia glauci- 
calyx; to the right of it is Shorea polysperma; between them in the 
background is Calophyllum whitfordii. (For other trees in this plot 
see Plot B, Table XIX.) The herbaceous vegetation is represented by 
Carex continua, 
