T. rubrum | Figure 4.26
A: T. mentagrophytes *
B: T. rubrum *
C: T. tonsurans *
*Courtesy of Sandra Arduin,
Michigan Department of
Community Health |
(Figure 4.26B) - Infection: most common dermatophyte; tinea pedis, tinea corporis, onychomycosis, Majocchi’s granuloma
- Colony: fluffy white → reverse red (no diffusion)
- Hyphae: septate hyphae
- Conidia: teardrop-shaped microconidia resembling “birds on a wire,” pencil-shaped macroconidia rare
- Misc: (−) hair perforation, (+) pigmentation on cornmeal agar, (−) urease
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