Lichenicolous fungi from Vietnam, with the description of four new species

Abstract: Zhurbenko, M. P., Diederich, P. & Gagarina, L. V. 2020. Lichenicolous fungi from Vietnam, with the description of four new species. – Herzogia 33: 525 –543. Twenty six species of lichenicolous fungi are reported from Vietnam. Arthophacopsis heterodermiae (on Heterodermia; also known from Australia), Diplolaeviopsis vietnamensis (on Bathelium), Minutoexcipula kovalenkoi (on Lecanora) and Sclerococcum pseudosipmanii (on Parmotrema) are described as new to science. Cladophialophora cf. megalosporae and Microsphaeropsis cf. olivacea possibly represent undescribed species and are informally described and discussed. Lawreya glyphidiphila, Milospium lacoizquetae, Spirographa arsenii (also new to Papua New Guinea and the U.S.A.), S. intermedia s. lat. and S. pyramidalis are newly reported for Asia; Stigmidium microspilum is newly reported for South America (Brazil) and Hong Kong. Another 15 species are newly documented from Vietnam, including Opegrapha physciae, which is also new to Cape Verde, Dominican Republic and Puerto Rico.