some kind of green mould or lichen on an oak tree

some kind of green mould or lichen on an oak tree

Observation - some kind of green mould or lichen on an oak tree - UK and Ireland. Description: small patch of green mould or lichen on an oak tree. looks like little green barnacles in places (toward the centre) and a little smoother but still textured around the outside. the growth was among moss on the bark of an oak tree but had only established

small patch of green mould or lichen on an oak tree. looks like little green barnacles in places (toward the centre) and a little smoother but still textured around the outside. the growth was among moss on the bark of an oak tree but had only established a small spot in relation to other stuff growing on the tree.