on Sabouraud's dextrose agar at 25C, colonies are slow growing and variable in morphology. Colonies may be flat, wrinkled and folded, glabrous, suede-like or downy in texture, white to brownish with a tan or brown reverse. Microscopically, a variety of conidia may be seen, including pyriform microconidia, chlamydoconidia and arthroconidia. However, none of these are characteristic of the species, and most strains may grow for long periods of time without the production of conidia.