Anthracnose of swiss cheese plant Monstera deliciosa Liebm. and Phoma rot of leather leaf fern Rumohra adiantiformis (G. Forst. F) Ching occurred on Hachijo Island of Tokyo Metropolis in 2010. The causal fungi isolated from the diseased plants were identified as Colletotrichum gloeosporioides (Penzig) Penzig & Saccardo on swiss cheese plant and Phoma sp. on leather leaf fern. Inoculation tests showed that these fungi were the causal agents of the diseases. This is the first report of these diseases in Japan.
