Tricholoma inamoenum is a mushroom of the agaric genus Tricholoma found through the Northern Hemisphere, particularly under conifers.
[2] It is poisonous, and is characterized by an unpleasant odor resembling coal gas or tar.
[3][2] • Analysis of the volatile compounds emanating from fresh sporocarps using solid phase microextraction (SPME) showed the odor compounds responsible for the coal tar odor of this mushroom are 1-octen-3-ol and indole.
Seattle's Tricholoma platyphyllum may be the same species.
A similar species is Tricholoma sulphureum, which is found under both conifers and hardwoods.