Arthonia molendoi (Arthoniaceae, Ascomycota), a Lichenicolous Fungus, New to Japan

Abstract

Arthonia molendoi (Heufl. ex Frauenf.) R. Sant. (Arthoniaceae, Ascomycota), a lichenicolous fungus, is reported as new to Japan. It was found on a herbarium specimen of Rusavskia elegans collected from Hokkaido, northern Japan.