Mitosporic fungus. Hyphomycetes.Teleomorph (sexual state): Pleospora (Ascomycete).
Approx. 6 species.
Soil, wood, decaying vegetation. Some species found on leaves are plant pathogens.
Growth indoors is rare.
Known allergen. Shares allergens with Alternaria.
Type I allergies (hay fever, asthma).
A rare report of phaeohyphomycotic sinusitis (identification questionable).
Grows on general fungal lab media; sporulation may be slow to absent. "Light/dark cycling" may induce sporulation.
Distinctive, not easily confused with other genera, although young spores or spore fragments may be confused with other pigmented muriform spores such as Ulocladium, Alternaria or Pithomyces.
Distinctive and readily identifiable on tape lifts. Although Stemphylium is rarely found growing indoors, it may be seen in dust as part of the normal influx of outdoor particles.