Microscopic Morphology: Produces hyaline, septate hyphae.
Conidiophores bear supporting cells which branch verticillately, each producing some 2 to 7 phialides about 3.5 µm to 6.5 µm in width and 150 µm in length. Phialides are cylindrical or ellipsoidal in shape which widen from the base then taper to a thin neck somewhat resembling a bowling pin. Conidia are subspherical or ellipsoidal in shape, smooth walled and about 2-4 µm by 3-5 µm in size. Conidia generally arise in long divergent chains. Thick-walled intercalary or terminal subglobose chamydospores (4-8 µm) may be produced.