Morphology of Piedra hortal.
Piedra hortai, an ascomycete causing black piedra, was studied with light and electron microscopy. The nodule on the hair contains septate hyphae, asci and free ascospores, all of which were smaller than those previously reported. A mode of spread of infection is suggested.
D001203:Ascomycota / Q000166:cytology* / Q000648:ultrastructure; D006801:Humans; D010854:Piedra / Q000382:microbiology