Which dematiaceous fungus causes a condition known as chromoblastomycosis?

a. P. boydii
b. Hortaea werneckii
c. Phialophora spp.
d. Exophiala jeanselmei


C
The fungi known to cause chromoblastomycosis, Phialophora spp., Cladosporium (Cladophia-lophora), and Fonsecaea, are all dematiaceous. These fungi are slow growing and produce heaped-up and slightly folded, darkly pigmented colonies with a gray to olive to black and vel-vety or suedelike appearance. The reverse side of the colonies is jet black. Microscopic examina-tion is necessary to identify definitively the pathogenic agent.

Biology & Microbiology

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