Yellow Fungus Medical term and info Description: Chrysosporium description, this link is really for medical personal in understand what that Yellow discoloration may be on your reptile. The full medical name is Chrysosporium anamorph of Nannizziopsis vriesii. So if you suspect this in your pet, print it out and take to your Doctor. There is currently a Dr at the University of Wisconsin, Jean Pare, that is researching this fungus in reptiles and we are awaiting more info from him. Added on: 29-Aug-2002 hits: 1659 | Report broken link