Boston Mycological Club

Collybia dryophila (Bulliard : Fries) Kummer

Other names:

Gymnopus dryophilus

Description:

This common mushroom appears in wood/leaf litter. It has a smooth, slender tapering stem (sometimes it can be more swollen at the ground) and the cheery browns and golds in the cap and stem. Note the two-tone nature to the stem, whitish above and more golden below. The cap is hygrophanous and will therefore change shades of brown depending on whether it's wet or dry. The spore print is white and the gills are close and narrow. The very similar Collybia butyracea is usually more stout, the colors deeper, the cap tends to be more slippery (or 'buttery' as the name refers to) and the spore print is a pinkish white.

References:

Bessette - Mushrooms of Northeastern North America; page 95
Lincoff - Audubon Field Guide to North American Mushrooms; page 755
Barron - Mushrooms of Northeast North America; page 256 (as Gymnopus dryophilus)
Kibby - Mushrooms and Other Fungi; page 77
Phillips - Mushrooms of North America; page 60
Arora - Mushrooms Demystified; page 215

Images:

Collected 2001-07-22; Stow, MA; Woodhead Farm.