Small brown mushrooms were growing from stump in a mixed forest.
Spores ellipsoid, dark brown with germ pore, measured
*(7.5) 7.6 - 8.4 (10.3) × (4.7) 4.9 - 5.6 (6.3) µm
Q = (1.4) 1.44 - 1.67 (1.7) ; N = 30
Me = 8.1 × 5.2 µm ; Qe = 1.6
On Betula log perennial resupinate polypore (with two layers).
Growing on one of the blackening Russula.