The white gills and its decurrent form will distinguish it from P. lignatilis.
decurrent, said of the gills when they extend downward on the stem.
decurrent: closely attached to and running down another body.
Bases of the bracts subtending leaf-fascicles not decurrent.
The pileus is fleshy in the centre, and the gills thick and decurrent.
The gills are white, crowded, narrow at each end, decurrent.
Page 309Gills not decurrent, plants parastic on other mushrooms.
The gills are attached to the stem, often with a decurrent tooth, whitish.
The gills are decurrent, distant, rather thick, often forked.
The gills are distant, decurrent, white, or slightly tinged with yellow.