This one is causing me some problems. I think it's a
Clitocybe but not with any huge confidence. It was growing on a moss covered limestone rock under beech. Cap was up to 50mm with the stipe 5mm x 30mm. There was no really obvious smell apart a general fungusy one.
Microscopically it had rather long fusiforme spores 9.4-10.3µ x 3.4-4.3µ with a Q of 2.1-2.8. There were no cystidia on either the gill edge or gill face. Basidia were four spored and the hyphae in the pileipellis had very conspicuous clamps.
The only one I could find (in Funga Nordica) with spores to match this was
C.inornata but this is supposed to have a smell like linseed oil and conspicuous rhizomes - neither of which I recorded.
Does anyone have any other suggestions? Your help as always is much appreciated.