First Report of Stem Rot on Asiatic Dayflower (Commelina communis L.) Caused by Sclerotium rolfsii in Korea.

Stem rot was found for the first time on the Asiatic dayflower plant (Commelina communis L.) in Korea. A detailed description of this Korean specimen is given, along with its rDNA internal transcribed spacer sequence. The fungus was identified as Sclerotium rolfsii Saccardo based on mycological characteristics and molecular data.