Ginny B's picture

Brown lichen

Observed: 31st July 2012 By: Ginny B
S159 Neighbourhood Nature - course complete
Ginny B’s reputation in Fungi and LichensGinny B’s reputation in Fungi and LichensGinny B’s reputation in Fungi and Lichens
Brown lichen

Growing on the lightest side of the trunk of a Scots pine (Pinus sylvestris), a brown foliose lichen, which I think may be Melanelixia subaurifea. Measured across the widest part this is approximately 3cm*. The blue-white powdery covering on the bark I believe is Lepraria incana.
* I have just seen and edited my mistake - it is 3 cm across and not 3mm. Sorry!


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Species interactions

No interactions present.


AlanS's picture

Don't worry about the units

In mixing mm and cm you are merely following the established lichenological tradition in Dobson and in the The Lichens of Great Britain and Ireland. In one case I have found, Dobson had his description correct in his 5th edition but then copied the incorrect description from the The Lichens of Great Britain and Ireland for his 6th edition.

As for the lichen, we need a close view of the isidia (if mature) and maybe a chemical test. I am NOT sure this is M. subaurifera. (The brown form of M. glabratula looks possible.)


Ginny B's picture

Just seen your comment

I've just seen your comment and thank you, Alan. I don't know if I can get a better picture, but will try. This one is a bit high on the tree for me to see what I'm photographing!

On another visit I found a few even smaller lobes on the other side of the same tree that are of a rather more olive green colour, and had aleady decided I had probably made a mistake and that maybe both were M. glabratula. I haven't been back to test with chemicals yet, but when I do I will post photos of both and hope they are clear enough for you to identify for me.