Colonial Morphology:
Moderately slow growth, matures in about 12 days, highly variable,
suede like, powdery or velvety, white, beige, greyish, pale or sulfur
yellow, rose or brownish on surface; reverse colorless, yellow,
dark brown or red brown.
Physiological Tests:
Urease positive, hair perforation test usually negative, requires
thiamine, BCP-milk: alkalinization
