According to Index Fungorum Aug 2007, the basionym is Helminthosporium diospyri Thüm. publ. M. U. no.1273, recomb. is Cercospora diospyri (Thüm.) Cooke in Rvenel Amer. Fungi n.588. Info was from Sacc. Syll. IV:467; XV:156, but leaving it as the Cercospora diospyri Thüm., the name given on the Thüm. M. U. no. 1273 label