World of Dermatophytes: A Pictorial Prov Lab Home

Microsporum gypseum [M. ferrugineum] [M. nanum]


Microsporum gypseum colonial morphology on PYE
Microsporum gypseum phase contrast microscopy
Microsporum gypseum biochemicals - Photo not available
Colonial Morphology Microscopic Morphology
Phase Contrast
Biochemical Reactions:
BCP, SDA and Urease
  • Growth rate: rapid
  • Texture: granular to powdery, flat, spreading
  • Thallus color: tan to cinnamon brown with cottony white centre
  • Reverse: beige to red brown
  • many rough, thin walled macroconidia, with symmetrically rounded tip
  • pyriform microconidia, lateral
  • BCP: profuse, no change
  • Urease: positive
  • Hair perforation: positive
  • Vitamin requirement: none

Compare to and
Differentiate from:

  • not available
Etiology & Ecology

  • geophilic
  • worldwide, rare in North America, Europe, common in South America
  • feet, hand, body, scalp, rarely nails
  • usually acquired from soil but occasionally animals, also flies
  • etiology of other dermatophytes