Common greenshield lichen

Description:

The thallus is 5 to 15 cm in diameter, leaf-like, and divided into lobes. It is attached to the substrate usually bark at occasional points by tufted or fibrous, anchoring structures (rhizines). The rhizines are black and unbranched. They are dense toward the center, sparse and short toward the margins. The lobes are irregular, rounded and flat. The upperside is pale yellowish-green and is not spotted. It is smooth at first, often becoming rough, wrinkled, and folded with age. It rarely produces spore-producing structures (apothecia).Lichens which are often mistaken for moss are unusual plant-like organisms that are actually symbioses of fungi, algae and bacteria living together.

Habitat:

Flavoparmelia caperata is a bark dwelling species of numerous different trees and shrubs in temperate forests. It rarely also occurs on rocks, a phenomenon that is reportedly more common at the northern part of its range. It can be found in forested and exposed environments, from sea level to over 3400 m elevation.

Notes:

Not sure if this is the right ID for this lichen. So suggestions are more than welcome. Spotted on a branch of an oak tree (Quercus robur) in Spielderbos, Veluwe, Holland. (sources:see reference)