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Mould Identification: A Virtual Self Assessment

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Unknown 76 = Ulocladium chartarum

Case History
A nasal swab taken from a patient with a history of sinusitis and nasal polyps grew the fungus shown below.
Culture

On potato dextrose agar (PDA) colonies were black, powdery to lanose with a dark pigmentation on the reverse.
Microscopy

Microscopically, numerous, usually solitary, multicelled conidia (dictyoconidia) are formed through a pore (poroconidia) by a sympodially elongating geniculate conidiophore. Conidia are typically obovoid (narrowest at the base), dark brown and often rough-walled.
Comment: Species of Ulocladium are all saprophytes, however species may be confused with other poroconidial genera such as Stemphylium, Alternaria, Bipolaris, Exserohilum, Dreschlera and Curvularia.

About Ulocladium Back to Virtual Assessment

What is your identification?

Alternaria tenuissima
Ulocladium chartarum
Stemphulium botryosum

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Dr David Ellis
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