Aspergillus crustosusAspergillus crustosus is a species of fungus in the genus Aspergillus. It is from the Aenei section. The species was first described in 1965. It has been reported to produce PR-toxin.Growth and morphologyA. crustosus has been cultivated on both Czapek yeast extract agar plates and Malt Extract Agar Oxoid® plates. The growth morphology of the colonies can be seen in the pictures below.