Fri 2014-01-31 
Lichens growing on a small dead tree: Lecidella elaeochroma (round black spots with light green background) and an Opegrapha sp, probably Opegrapha atra (irregular black markings on white background).
I took the following specimen:
However, I was unable to get any spores from it.
First photo and specimen taken in Whiteknights Park, Reading, UK, on 2014-01-25.
Fri 2014-01-24 
Lichens Lecanora chlarotera (pale disks) and Lecidella elaeochroma (black spots on light green blackground) growing on the trunk of a young tree. The colonies of the latter species tend to have black lines around them:
Photos taken in Whiteknights Park, Reading, UK, on 2014-01-11.
Wed 2014-01-15 
A rather lettuce-like lichen which I think might be a greenish form of Xanthoria parietina.
I took the following specimen:
This yielded the following spores (magnification x600, field width 86um):
These are about 12.5 x 7um which agrees well with the range 12-16 x 5-9um given for Xanthoria parietina at the Consortium of North American Lichen Herbaria.
First photo and specimen taken in Whiteknights Park, Reading, UK, on 2014-01-11.
Tue 2014-01-14 
A green lichen, probably Punctelia subrudecta on a fallen branch of an oak tree (Quercus sp).
I took the following specimen home with me:
Unfortunately I was unable to get an spores from it.
First photo and specimen taken in Whiteknights Park, Reading, UK, on 2014-01-11.
Tue 2012-01-10 
A yellow lichen, probably Xanthoria parietina, growing on a tree branch.
Photo taken in the field below Chazey Wood, near Caversham, UK, on 2012-01-09.
