Mitosporic fungus. Coelomycetes. Teleomorph (sexual state): Pleospora (Ascomycete).
Approx. 80 species.
Plant material, soil, and as a fruit parasite.
Wind (when dried out).
Frequently found on walls, ceiling tiles, on the reverse side of linoleum. Also found on cement, paint, paper, wood, wool, and foods such as rice and butter. May have little effect on the indoor air because the spores are not readily disseminated by air currents.
Parasitic on plants.
Type I allergies (hay fever, asthma).
Type III hypersensitivity pneumonitis: Shower curtain hypersensitivity.
Mycotic keratitis, rare skin infection, and a few cases of subcutaneous phaeohyphomycosis reported.
Grows well on general fungal media. Very small spores formed in pycnidia (asexual fruiting bodies). Sticky masses of spores ooze out of the ostiole (opening) in the pycnidia.
Not recognizable on spore trap slides.
Identifiable on tape lifts if the spores and entire fruiting body are present. Pycnidia, however, do not always lift well on tape sampling; masses of very small spores found within a mat of fungal mycelia is often indicative of Phoma.