Light micrograph of culture of the dermatophyte fungus, Epidermophyton floccosum. The genus Epidermophyton inhabits human skin & causes athlete's foot (usually between the toes). The thread-like structures visible are hyphae, the vegetative elements of the fungus. Fungal growth is usually confined to the tips of hyphae, where asexual reproduction occurs by spore formation. Living unstained culture. Interference Microscope. Magnification: x200