Family: Pannariaceae
Pectenia plumbea (Lightf.) L. Lindblom, Wedin & S. Ekman
Bladder Stalks
Type: Foliose
Common in western areas on trees often with mosses. Thallus blue-grey with white marbling. Apothecia abundant, reddish-brown
References:
Smith, C.W. et al. editors (2009) The Lichens of Great Britain and Irelandd
Dobson, F.S. (2018) Lichens: an Illustrated Guide to the British and Irish Species