Identification: White unknown mushroom

Good afternoon folks

This mushroom or set of mushrooms are growing through a new planter bed in between sword ferns. But generally through hemlock fir bark mulch. They were in a cluster of about 10-15.

No ring on stipe but a basic bulge at the stipe growing media

The spore print is white sorry no photo of that

Would someone be able to help Identify

 

Hi @pierrot
So far I'm thinking Melanoleuca verrucipes despite a few character differences.
Can you confirm that the stipe has dark "scabers" rather than this being dirt clinging to a rough surface?

 

Thank you frog

Yes dark scabers not dirt

 

Thanks :-) And yes I think the cap surface cracking is a function of conditions ... or perhaps cap surface for M. verrucipes is more variable than I know :-)

 

thank you Frog

I was being fooled by the variation in the cap surface. it may be due to the original samples being close to hot concrete