PLATE i 
A. —Typical field case of coconut budrot showing infection of region about growing 
point and in bud. From this specimen, obtained on March n, 1919, at Lilio, Laguna 
Province, P. I., the pine culture of the fungus strain used for the coconut experiments 
was obtained. The photomicrographs (PI. 8) showing the mycelium and haustoria in 
the tissue were made from sections obtained from this particular specimen. 
B. —Early stages in rot of papaya (Carica papaya) produced by inoculation with 
Phytophthora strain from coconut. A similar infection is produced by the cacao 
strain. 
