The dull grey-green thallus is usually erect and tufted, up to 6 cm long with the main branches to 1.5 mm diameter with branching at wide angles. Where the lateral branches join the main stem, there is a narrowing often with a white ring. There is no blackening at the base of the main stem. Small soralia and abundant isidia may cover areas on branches.
On mossy woodland and wayside trees, more rarely on siliceous rocks.
To the west and south of Britain and Ireland.
Text by David Brabban