Colonies on oat agar (OA) on the 7th day were 3–3.5 cm in diameter, olive from copious sporulation, with a sparse aerial mycelium. The reverse of the colonies is olive-gray from conidia and smoky-gray emitted pigment immersed in the medium. Colonies on agar with malt extract (MEA) 2-2.5 cm in diameter on the 7th day, gray-brown to brown-black, with several radial furrows. The reverse is grayish-brown. Colonies on potato-carrot agar (PCA) 1.5-2.5 cm in diameter on the 7th day, gray-brown to olive, with a similarly colored reverse.
Vegetative hyphae are 1–2.5 microns thick. Conidia (aleuriconidia) are formed laterally on vegetative hyphae, or terminally on branches, single, sometimes in chains of two or several in groups, unicellular, spherical to flattened-spherical, rarely pear-shaped or obovate, smooth-walled, olive-brown, 6 —9 × 7–9 microns.