Scientific name: Schizophyllum commune Fr.
Derivation of name: Commun- means "common" or "in
common" referring to the commonness of this species, found
on every continent.
Common name(s): Common split gill; Split gill.
Occurrence on wood substrate: Saprobic; solitary,
scattered or in overlapping clusters on decaying hardwoods;
Dimensions: Caps 1-4.5 cm wide.
Cap: White to gray; dry; densely hairy; fan to shell-shaped
in lateral attachment, saucer-shaped when centrally
Gills: Gill-like folds are white to gray or pinkish-gray; hairy;
Spore print: White.
Stipe: Absent or simply a narrow extension of the cap.
Comments: The fruit body can be described as a
compound structure consisting of compressed radiate
cupules. What appear to be gills are the margins of two
adjacent cupules with proliferating marginal tissue makng it
appear that the "gill" is split.
More information at MushroomExpert.com:
More information at TomVolkFungi.net:
Figure 1. A typical fruiting of common split gill on wood.
Photo © Larry Grand.
Figure 2. Saucer-shaped appearance of centrally attached
fruitbodies. Photo © David Work.
A closeup showing the many split gills of
Schizophyllum commune. Photo © Gary Emberger.
Figure 4. The green dots indicate the "splits" where the two
margins of adjacent cupules meet. Photo © Gary Emberger.