Abstract
Gray mold and leaf tip blight of Ruscus hypoglossum L. occurred on the island of Hachijo, Tokyo, in 2000. A Botrytis species isolated from the infected plants with gray mold was identified as Botrytis cinerea Persoon: Fries, while a Cladosporium species isolated from the infected plants with leaf tip blight was identified as Cladosporium cladosporioides (Fries) de Vries. Inoculation tests showed that these fungi were the causal agents of the associated diseases. This is the first report on these diseases in Japan.