xiii, c, 3 Foxworthy: Philippine Dipterocarpaceae, II 165 
WHITE LAUAN 
This name is applied to those lauans whose wood is not dis- 
tinctly red. It includes a considerable range in color from white 
through yellow and gray to pink. The best-known white lauan 
is furnished by Pentacme contorta (Vid.) Merr. & Rolfe. Pen- 
tacme mindanensis Foxw. furnishes the same grade of wood. 
ALMON 
This is a white lauan, whose wood is very light in weight, 
coarse-grained, and of a light pink color. It is furnished by 
Shorea eximia (Miq.) Scheff. The wood of bagtican, Parashorea 
plicata Brandis, is slightly harder than the last. It is usually 
classed as a white lauan. Mangasinoro and kalunti are some- 
time classed as white lauans; they are here treated separately, 
however. Several other species of Shorea, which have pale 
yellow wood, are classed as white lauans or mangasinoro, ac- 
cording as their vessels are scattered or arranged in a reticulate 
pattern. Some of these are: Shorea malaanonan (Blanco) 
Blume, S. polita Vid., and S. pallida Foxw. 
Collectively, the white lauans rank third in order of abundance 
of all the Philippine woods. They constitute about 17 per cent 
of the volume of our forests. 
TANGUILE 
This wood is harder and finer-grained than red lauan, which 
it very much resembles. It is furnished by Shorea polysperma 
(Blanco) Merr. and, probably also, by S. warburgii Gilg. A 
closely related form which usually passes for tanguile is tiaong, 
S. teysmanniana Dyer. It is usually lighter colored and straight- 
er-grained than S. polysperma, but the difference is exceedingly 
slight. Tanguile is the fourth most abundant Philippine wood. 
It makes up about 7 per cent of the volume of the forests. 
GUIJO 
This wood is furnished by Shorea guiso (Blanco) Blume and 
by one or more undetermined species of Shorea. It is our fifth 
most abundant wood and makes up about 5 per cent of the 
volume of the forest. 
YACAL 
This name was first recorded for the wood of Hopea plagata 
(Blanco) Vid. The woods of other species of this and other 
genera, which seem to be identical in structure and durability, 
