Posted by Wildwood on Sep 18, 2013 in 2013, Algae, Ash, Autumn, September, Trees, Unidentified | 0 comments
Or even Ash Wednesday, Fraxinus excelsior.
The colouring is possibly caused by an algae, Trentepohlia abietina.
Picture taken September 3.
If you can help identify what has caused the colouring please leave a comment below.
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