This issue of Mycological Research News features: Announcement: a new publisher for all BMS journals; In this issue; Dictyostelium may be related to Fungi after all; and the origin of ascomycetes the proteolichenes hypothesis. Eight research papers are included in this part. Species diversity in Penicillum in a nature reserve in Australia yielded an unexpected proportion of species new to science. P. daleae has been too widely conceived and appears restricted to one area of Europe. Nine new Candida species allied to C. membranifaciens isolated from insect hind guts are formally described here. Five papers concern tree pathogens and address: mating gene sequences in Ophiostoma species causing Dutch elm disease; PCR detection of Mycosphaerella species on Eucalyptus; Botryosphaeria spp. on native trees in Ethiopa; PCR detection of Septoria spp. on poplars; and a new genus allied to Endothia on Terminalia ivorensis in Ecuador. The following new scientific names are introduced: Rostraureum gen. nov.; Candida amphixiae, C. blattariae, C. cerambycidarum, C. endomychidarum, C. friedrichii, C. gorgasii, C. lessepsii, C. michaelii, C. sinolaborantium, C. temnochilae, Diplodia rosulata, Penicllium virgatum and R. tropicale spp. nov.; and R. longirostris (syn. Endothia longirostris) comb. nov.