Whilst out and about at Rutland Water yesterday, I distracted myself for half an hour or so looking at Lichens. That is looking at and photographing, not identifiying! I've found a couple of good resources to check through, but for the moment these are just unnamed images of things that it is all too easy to ignore (of course if you recognise anything let me know).
First up, something on smooth barked trees in Hambleton Wood:
The rest are from the old wall running along the fields by the North Arm Marsh: