THE PHILIPPINE 
JOURNAL OF SCIENCE 
C. BOTANY 
VoL. VII APRIL, 1912 No. 1 
NOTES ON PHILIPPINE ORCHIDS WITH DESCRIPTIONS 
OF NEW SPECIES, IV. 
By OAKES AMES. 
(From the Ames Botanical Laboratory, North Easton, Mass., U.S. A.) 
The following paper contains descriptions of twenty-seven 
new species from the Philippine Islands, one genus, heretofore 
unrecorded as a native of the Philippines, and one species, 
namely Dendrobium angustifolium Blume, a native of Java, 
Sumatra, and the Malay Peninsula, which is an addition to the 
list of Philippine plants. 
Cestichis Cumingii (Ridley) Ames is here included as a distinct 
species. In Orchidaceae 1:13, doubts were expressed as to its 
distinctness from C. compressa. From careful studies of C. com- 
pressa, as represented by Javan material, and of C. Cumingjii, 
as represented by the specimens collected by Weber on Mount 
Mariveles, I am convinced that two species are before us. What 
. is true of C. Cumingii is true of numerous other Philippine or- 
chids which have close allies in Java and the Malay Peninsula. 
A general similarity undoubtedly exists, but comparative studies 
of each individual case show differences, the sum of which in- 
dicate clearly that there are constant differentiating traits of 
specific value. This fact becomes more and more apparent with 
each case studied and makes it seem highly probable that many 
Philippine plants which have been referred to extra-limital 
species will be found, after critical examination, to be distinct 
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