Punctelia rudecta
Punctelia rudecta on the bark of a Tamarack (Larix laricina) about 1 meter above the ground on the north side of the tree in a conifer swamp. Pseudocyphellae can be seen on the outer edges of the thallus lobes, isidi towards center of the thallus.
Similar species: Lecanorales
By Gary B
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Uploaded Mar 18, 2019. Captured Apr 9, 2016 16:53.