IMA FUNGUS · VOLUME 4 · NO 2: 265–345 doi:10.5598/imafungus.2013.04.02.12 Cercosporoid fungi (Mycosphaerellaceae) 1. Species on other ARTI fungi, Pteridophyta and Gymnospermae* C Uwe Braun1, Chiharu Nakashima2, and Pedro W. Crous3 LE 1Martin-Luther-Universität, Institut für Biologie, Bereich Geobotanik und Botanischer Garten, Herbarium, Neuwerk 21, 06099 Halle (Saale), Germany; corresponding author e-mail:
[email protected] 2Graduate School of Bioresources, Mie University, 1577 Kurima-machiya, Tsu, Mie 514-8507, Japan 3CBS-KNAW, Fungal Biodiversity Centre, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands Abstract: Cercosporoid fungi (former Cercospora s. lat.) represent one of the largest groups of hyphomycetes Key words: belonging to the Mycosphaerellaceae (Ascomycota). They include asexual morphs, asexual holomorphs or species Ascomycota with mycosphaerella-like sexual morphs. Most of them are leaf-spotting plant pathogens with special phytopathological Cercospora s. lat. relevance. The only monograph of Cercospora s. lat., published by Chupp (1954), is badly in need of revision. conifers However, the treatment of this huge group of fungi can only be accomplished stepwise on the basis of treatments of ferns cercosporoid fungi on particular host plant families. The present first part of this series comprises an introduction, a fungicolous survey on currently recognised cercosporoid genera, a key to the genera concerned, a discussion of taxonomically hyphomycetes relevant characters, and descriptions and illustrations of cercosporoid species on other fungi (mycophylic taxa), Pteridophyta and Gymnospermae, arranged in alphabetical order under the particular cercosporoid genera, which are supplemented by keys to the species concerned. The following taxonomic novelties are introduced: Passalora austroplenckiae comb.