660 Philippine Journal of Science 1919 
that the organisms may be identical. Petch** appears to have 
been the first to suggest the identity of the organism causing 
pink disease in the two regions. Though not all of the literature 
relating to the disease occurring in the West Indies is available 
here, we note that recently Stevenson ** has reported Corticium 
salmonicolor B. & Br. as the cause of a disease of Citrus in 
Porto Rico. The determination of the organism is credited to 
Doctor Burt, of the Missouri Botanic Garden. 
OCCURRENCE OF CORTICIUM SALMONICOLOR B. AND BR. 
IN THE PHILIPPINES 
Corticium salmonicolor B. & Br. has been found only recently 
in the Philippines, and the supposition seems justified that it is 
of recent introduction here. It was first collected in the fall 
of 1917 at Novaliches, near Manila, on Annona sp. Since that 
time it has been found at Los Bafios, Laguna Province, and 
abundantly at Lamao, Bataan Province. The Lamao experi- 
ment station is the center of plant introduction and distribution 
in the Philippines, and plant materials are known to have been 
shipped from Lamao to both Novaliches and Los Bafios. It 
seems very likely that Corticium salmonicolor B. & Br. was 
brought to Lamao on some plant introduced from another part 
of the Orient; for, while the fungus flora of the Philippines is 
far from being fully known, it seems very unlikely that botan- 
ical collectors and agricultural inspectors would have overlooked 
so conspicuous and destructive a fungus as Corticitwm—one 
likely to occur upon a very large number of hosts—had it existed 
in the Philippines for any considerable period. 
As Corticium is very destructive to Hevea brasiliensis in 
other parts of the Orient, it is interesting to note that ap- 
parently it has not made its appearance on this host in the Phil- 
ippines. The junior writer, while visiting the Basilan Rubber 
Plantation in November, 1917, made a careful survey of the 
estate for pink disease, but none was discovered. While Para 
- rubber is cultivated in other parts of the Philippines, the Ba- 
silan plantation is the oldest and most accessible, and probably 
the one most likely to be infected through the introduction of 
young plants from Malaya. In the Philippines, Corticiwm sal- 
monicolor B. & Br. has been collected only upon cultivated 
species, never upon naturally occurring plants. 
” Circulars. & Agr. Journ. Roy. Bot. Gard. Ceylon 4 (1909) 189. 
* Stevenson, John A., Fifth Report of the Board of Commissioners of 
Agriculture of Porto Rico (1915-1916) 43, 44. 
