Sclerotinia rot of Dianella ensifolia Sims and Tetragonia tetragonioides (Pall.) O.Kuntze occurred in Tokyo. Our inoculation test showed that isolates obtained from diseased plants were the causal agent of these diseases. Both isolates were identified as Sclerotinia sclerotiorum. This is the first report of Sclerotinia rot of D. ensifolia and T. tetragonioides, caused by S. sclerotiorum in Japan.
