Mollisia is known to be tricky and definitely requires microscopy. The key I’m looking at for Mollisia and related species starts with asking if the spores are septate.
Do you have anyone in the Glamorgan group who can help with microscopy?
this is most likely Mollisia (“Haglundia”) olivascens or elegantior. It would have been worth checking by microscopy, because both these species are not too often recorded in UK I suppose …
