166 
The Philippine Journal of Science 
1918 
are not distinguished from that of Hopea plagata and, like it, 
are known by the name of yacal. The name yacal is properly 
applied to any wood of this grade or to the tree that produces 
such wood. Species producing yacal are the following : 
Hopea plagata (Blanco.) Vid. 
H. f oxworthy i Elmer. 
H. odorata Roxb. 
H. malibato Foxw. 
Balanocarpus cagayanensis 
Foxw. 
B. bracliyptera Foxw. 
Isoptera borneensis Scheff. 
Shorea balangeran (Korth.) 
Dyer. 
S. ciliata King. 
S. astylosa Foxw. 
«S. malibato Foxw. 
S. falciferoides Foxw. 
S. scrobicidata Burek. 
It is thought that several other species belong here; but their 
identification is still in doubt. Yacal is the most valued of any 
of our dipterocarps. It is the sixth Philippine wood in order of 
abundance, making up about 3 per cent by volume of our forests. 
MANGASINORO 
This is a pale yellow, rather coarse-grained lauan, with the 
vessels arranged in a reticulate pattern. It is evident that the 
wood is the product of several species, whose identity is not 
understood. Kalunti is a rather poor grade of mangasinoro and 
is the product of Shorea mindanensis Foxw. Mangasinoro is the 
seventh in order of abundance of the Philippine woods and makes 
up something more than 2.5 per cent of the volume of the forest. 
PALOSAPIS, OR MAYAPIS 
This is furnished by the different species of the genus Anisop- 
tera. They are: Anisoptera thurifera (Blanco) Bl., A. curtisii 
Dyer, A. brunnea Foxw., A. mindanensis Foxw., and another 
species, which has not yet been described. 
Palosapis seems to rank about tenth in order of abundance 
among Philippine woods and to make up about 1.5 per cent of 
the volume of the forests. 
MANGACHAPUY, OR DALINGDINGAN 
This is a wood lighter in weight and color and rather softer 
than yacal. It is sometimes quite difficult to determine whether 
a wood is a yacal or a dalingdingan. Usually the harder and 
finer-grained forms of dalingdingan are furnished by species that 
attain a rather small diameter. So far as known, all of our 
dalingdingans are furnished by species of Hopea. Some of these 
species are: 
Hopea acuminata Merr. H. philippinensis Dyer. 
H. basilanica Foxw. H. glutinosa Elmer. 
H. mindanensis Foxw. H. maquilingensis Foxw. 
H. pierrei Hance. 
