| Re: Lichen query
Hi Billy and welcome. I have said book that Lancashire Lad mentioned and would strongly recommend you look for a copy. There are keys ( a bit daunting) photographs and habitat preferences for the species covered.
I did a quick search and one site has a section on projects, churchyards are covered, no photographs but some interesting facts and a chance to help with a recording scheme.
Hope this is of some help.
Vince |