Trichophyton tonsurans

Colonial Morphology	Microscopic Morphology Phase Contrast	Biochemical Reactions: BCP, SDA and Urease
Growth rate: moderately fast Texture: suede like with radial folds, sometimes powdery or velvety Thallus color: white to creamy yellow, rose Reverse: lemon yellow to mahogany brown, may have dark diffusing pigment	many pyriform microconidia on stalks, balloon forms rare, distorted macroconidia may have spiral hyphae	BCP: profuse, alkaline (occasionally no change) Urease: positive Vitamin requirement: thiamine Hair perforation: negative (usually)
Compare to and Differentiate from: T. mentagrophytes M. persicolor E. floccosum: vitamin requirements T. soudanense: BCP	Etiology & Ecology anthrophilic worldwide scalp, body "shower sites", occasionally nails endothrix outbreaks etiology of other dermatophytes

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