Growing on a branch of a living oak tree. Snap test shows no elacticity
Snap test indicated absence of elasticity
This crustose lichen measures about 15 mm across. image two is of the underside of the lichen.
Reindeer Lichen (Cladonia rangiferina) is a common lichen found in the northern US up to the Arctic. It has a fruticose thallus with many branching grey-greenish structures.