The cap is brick red in centre and paler toward the margin.  The marging have the remnants of the veil attached as woolly fragments.  Gills are adnate, cream or greyish, darkening as it mature to greenish-brown then purple-black. 

other Hypholoma species including Sulphur Tuft.

Photograph caps from top down, in side view and underneath to show gills and full length of stipe; photograph the whole cluster in situ and note the substrate and habitat. 

stumps or on buried wood of deciduous trees, especially oak 

Widespread but infrequent (Kibby, Vol. 3, 2021)