"Ascomycota" . . "Leotiomycetes" . . . "Durandiella fraxini (Schwein.) Seaver 1951" . "Dermateaceae" . "Helotiales" . "(Schwein.) Seaver 1951" . . . . . "Fungi" . . . . "Durandiella fraxini" . "Durandiella" . .