Hi
just to add to the confusion. I've been back to Langshaw today and I went to the area where they were. I found some ( not sorted photos yet) dug them up and they were on broadleaf litter with a few pine needles mixed in, but the mycelia were mostly wrapped around the broadleaf.
There is a mixture os Scots Pine, Sycamore and Beech all within a few metres and I'm sure it was the beach leaves they were on?
neil