Idriella lunata was introduced for a fungus growing on infected roots on Fragaria chiloensis (Nelson & Wilhelm 1956) and the genus currently comprises 30 species (Matsushima 1971, Von Arx 1981, Castañeda-Ruiz & Kendrick 1991, Rodrigues & Samuels 1992). Nevertheless, our phylogenetic analyses suggest that Idriella is a monotypic genus, and species formerly described in this genus as I. desertorum, I. jambosae and I. uncinospora, depict new genera. Although the phylogenetic position of these new genera is still unclear, they do not belong to the Microdochiaceae, but appear as members of Sordariomycetes with uncertain position.

Microdochium neoqueenslandicum is represented by two isolates, CBS 108926 and CBS 445.95, and clustered basal to other Microdochium species. Microdochium neoqueenslandicum is distinct from M. queenslandicum by having shorter and wider conidia (7.5–11 × 1.8–2.2 μm in M. queenslandicum). Microdochium queenslandicum is only known from a forest soil sample collected in Australia. Unfortunately, no living material of M. queenslandicum was available for study. In our phylogenetic tree M. neoqueenslandicum is represented by two strains isolated from grasses, Agrostis sp. and Juncus effuses, the former from New Zealand and the latter from the Netherlands, suggesting that this species has a wide distribution.