"Humphreya " differs from " Ganoderma " by the velvety spores of " Humphreya " feature a crested endosporium ( the innermost layer of the spore wall ).
2.
Spores in this species are typically spherical to ellipsoid in shape, and transclucent ( hyaline ) . " Rhodocollybia " is characterized by having an endosporium ( inner wall of the spore ) that is dextrinoid ( staining yellowish or reddish-brown in iodine-containing solutions such as Melzer's reagent ), and sometimes cyanophilous.