Lobaria virens. Tree lungwort.

Life-form & Growth Form:

Foliose green thallus grows closely appressed to tree bark.

Flowering period: 

NA

Habitats: 

Found primarily growing on bark of Quercus, Fraxinus, Ulmus and Fagus, within long-established/ancient woodland; occasionally also on sheltered rocks within woodland.  

Threats:

As both stations are relatively well protected within ASSIs, the only viable threat appears to be air pollution.

Static distribution map:
Lobaria virens
Lobaria virens