The presence or absence of metulae, the color of conidial heads, and the pink coloring of the conidia on Czapek agar slant cultures containing 0.05% anisaldehyde can be possibly regarded as criteria and key characters by which to distinguish three taxa, i.e., Aspergillus sojae Sakaguchi et Yamada ex Murakami, A. parasiticus Speare, and A. toxicarius Murakami. One (strain RIB 4018) of the A. toxicarius strains, producing no pink conidia, is now placed in A. parasiticus on the basis of the dark green color of conidial heads in age. A revised synoptic key is provided for the identification of the yellow-green Aspergilli which produce roughened to echinulate conidia.