Hope I'm not equivodado, lichen Evernia is thick in the family Parmeliaceae. I make two species, Oakmoss Oakmoss Evernia furfuracea Treemoss and both are used as binding agent in the Colony and in the perfume industry. It is green on top and white on the bottom, and is divided equally into "forks".
http://es.wikipedia.org/wiki/Evernia
Greetings from Spain.
(https://www.mikroskopie-forum.de/pictures003/113631_64936351.jpg)
(https://www.mikroskopie-forum.de/pictures003/113631_45144719.jpg)
(https://www.mikroskopie-forum.de/pictures003/113631_38994165.jpg)
I think this is Evernia prunastri. And it is true that it is used in the perfume industry.
E. prunstastri has soralia on rand and it is grey- to yellowgren on the top, this come from usnin acid.
Find you bluish on the top, that have no usnin acid and this is E. prunastri var. herinii.
Thank youfor the Lecanora many explanations, I'm learning a lot.
A hug from Spain.