Mitosporic fungus. Hyphomycetes. Teleomorph (sexual state): Cochliobolus (Ascomycete).
More commonly found in tropical, subtropical regions.
Approx. 30 species.
Plant debris, soil, facultative plant pathogens of tropical or subtropical plants.
Yes, on a variety of substrates.
Type I allergies (hay fever, asthma).
Other: A relatively common cause of allergic fungal sinusitis.
Occasionally a cause of onychomycosis, ocular keratitis, sinusitis, mycetoma, pneumonia, endocarditis, cerebral abscess, and disseminated infection. Most cases are from immunocompromised patients.
Grows well on general fungal media; most isolates need "light/dark cycling" for sporulation. Colonies are shades of gray to brown.
Distinctive; large second or center cell gives conidia pronounced curved shape. Conidia from species with less pronounced curve may be misidentified. Some Drechslera spores are similar.
Distinctive, readily identifiable on tape lifts.