This issue of Mycological Research News features: In this issue; The coronomycin producer: a case of mistaken identity?; Long-range self-organization in Dictyostelium; and Resistance variation in natural pathosystems.

Thirteen research papers are included in this part, seven concerning the phylogenetic relationships of plant pathogens: a new invasive Phytophthora on trees, variation and mating systems in P. ramorum, the status of the Microdochium nivale varieties, the position of Pseudocercospora cladosporioides on olives, Verticillium s. lat., an ancestral powdery mildew, and a consideration of Sawadaea spp. along with their maple hosts. Other papers report on parthensomes in corticioid fungi, collembola grazing, the cultivation of Cordyceps unilateralis, genetic diversity in Entomophaga maimaiga, the gold content of macromycetes, and a fossil Aspergillus species from Tertiary amber.

The following new scientific names are introduced: Caespitotheca gen. nov.; Aspergillus collembolorum, and Phytophthora kernoviae spp. nov.; and C. forestalis (syn. Uncinula forestalis), and Microdochium majus (syn. Fusarium nivale var. majus) combs. nov.