Gymnopilus underwoodii

Gymnopilus underwoodii is a species of agaric fungus in the family Strophariaceae. Originally described in 1896 by Charles Peck as "Flammula underwoodii", the fungus was given its current name by William Murrill in 1917. The specific epithet honors American mycologist Lucien Underwood.
Description.
The cap is in diameter.
Habitat and distribution.
"Gymnopilus underwoodii" has been found on pine logs and trunks. In North America, it occurs from Virginia to Alabama and Florida, during November and December.