<i>Aspergillus nanangensis</i>: updated description with phenotypic and ecological comparison to other species of section <i>Janorum</i>.

Aspergillus nanangensis is a recently described species, only known from a single collection from forest soil in Australia. It belongs to the less explored section Janorum within the subgenus Circumdati . It produces secondary metabolites (nanangenines), some of which possess anticancer activity. Here, we report new isolations of this species from indoor air and dust in the USA, and update the description of this species to include previously unobserved phenotypic characteristics, notably two different types of conidial heads (white and green), a typical feature of section Janorum . In addition to presenting new data about the ecology of this species, we review the geographic distribution of all currently recognised members of section Janorum . Phylogenetic analysis based on four DNA loci (ITS rDNA, benA , CaM , and RPB2 ) has confirmed that A. nanangensis is a well-supported species. Finally, we provide a comprehensive comparison of the distinguishing characters of A. nanangensis with the four remaining species accepted in section Janorum .