413 
TABLE XI V—Continued. 
Name, A. B Cc D E. F. | G | H I | 
112. Sterculia crassiramea _-__--.__|.-.-__|__-_.- phy aaa 1 ie Pe veh Ss PO ee) BS 
ie, Wie | a ae WY isa Fe ea 
da: Spfiiaitentaa te a ee ae ed 
Sab SN pane RISD RESEDNY (URSIN ahs? Oe aneE, CAEN Rei 
Rib. Bp inde ess ae th Bae | erie > 5 Fg Rene ll gel bale 
th Wp adel ees ic aie ms MEN ST Sh. Gy. Ua a 
ESS Sot tice RN ER RE ERS TS ee 1S eee 
118. Sp. indet ain aaa AR Be Sk ore ae ail 
ie pa hace gus, > ay see OARS POU PM RS SG lie os ge as 
120. Sp. indet TEA Se ae Babs Ps 5 ae pga SoG aa 
Total cass — [anna 806 | Oe Cee 
Storied vegetation.—An analysis of this plot, as a whole, more or less 
strikingly shows two stories of vegetation. In the upper one, the trees 
reach to the height of 25 to 36 meters. (See Pl. XII.) The species 
composing it are, in the main, Dipterocarpacew. Among these are Shorea 
guiso (guijo), Shorea contorta, (lauan) Dipterocarpus vernicifluus 
(panao), Anisoptera vidaliana (mayapis), Shorea polysperma (tanguili), 
and Hopea acuminata (dalindingin). Still others in the upper story 
are Huphoria cinerea, Santira nitida, Palaquium luzoniense, P. tenui- 
petiolatum, and Koordersiodendron pinnatum. In all, about 31 species, 
out of a total of 121 found in the plot, have representatives in the upper 
story. 
A careful analysis of the plot will, in places at least, show that the 
trees of the top story are far apart. (Pl. XII.) While the crowns for 
a short distance are often close enough together to make an even skyline 
yet there are often depressions in this profile which are due to the absence 
of the upper-story trees. However, this irregularity is not so striking 
as it is in the Bambusa-Parkia formation. The lower-story vegetation 
consists of the younger trees of the upper one, together with species which 
seldom reach 20 meters and usually are from 10 to 15 meters in height. 
(Pls. XIV, XV.) Of these the most common are Strombosia philip- 
- pinensis, Gnetum gnemon, Diospyros pilosanthera, Aporosa symplocosi- 
folia, Reinwardtiodendron merrilit, and others. 
Relation to topography.—TVhe table shows differences in vegetation 
corresponding to types of topography. In Plots A and E the gradient 
is near 40 degrees, and corresponding to this, there are fewer tall trees 
and many more saplings and seedlings. E is on the brow of the hill, 
and much more exposed to winds, the soil is shallower and stony, and no 
doubt the chresard is much lower. Less mesophytic species such as 
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