World of Dermatophytes: A Pictorial Prov Lab Home

Trichophyton tonsurans [Trichophyton terrestre] [Trichophyton verrucosum]

Trichophyton tonsurans colonial morphology Trichophyton tonsurans phase contrast microscopy
 
Trichophyton tonsurans phase contrast microscopy
Trichophyton tonsurans biochemicals
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:

Etiology & Ecology