A genus of ascomycetous fungi composed of the anamorph genera Microsporium and Trichophyton species.
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Ar·thro·der·ma (ahr″thro-durґmə) a genus of fungi of the family Gymnoascaceae; the hyphae around the gymnothecium are dichotomously branched, and cells have deep constrictions to give them a dumbbell shape. It has been found to be identical to the former genus Nannizzia. This genus contains the perfect (sexual) stages of fungi of genera Microsporum and Trichophyton. A. cajetaґni is the sexual stage of M. cookei and A. persiґcolor is the sexual stage of M. persicolor.Medical dictionary. 2011.