A fungus. P. verrucosa, P. americana, Phialophora europaea. A black yeast.
Found in tropical soil, inoculated into the feet of them what can't afford shoes. Also found in rotting wood, soil, wasp nests, and plant debris.
Azoles, terbinafine and Amphotericin B.
Also local heat (>40C).
The first report from 1915 (PubMed).
Last update: 05/05/18