Boston Mycological Club
The cap is wrinkled, the stem is fibrous and white and has the remnants of a cobwebby veil covered in the blackish spores. The stem is also hollow. It grows in rotten wood and has a knob on top of the cap. The cap, other than being wrinkled, is clean, but the edge of it often has bits of the partial veil/margin hanging on it. Lincoff's guide mentions that this is very similar to Psathyrella rugocephala but differs in spore size and the darker cap color.
Bessette - Mushrooms of Northeastern North
America; page 238
Lincoff - Audubon Field Guide to North American
Mushrooms; page 609 (in the comments for
Psathyrella rugocephala.)
Barron - Mushrooms of Northeast North America;
page 206
Kibby - Mushrooms and Other Fungi; page 110
Phillips - Mushrooms of North America; page
202
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| Collected 2001-07-22; Stow, MA; Woodhead Farm. |