Roccellaceae Schizotrema quercicola (Schismatomma quercicola) Growth type crustose Chemical results: K-, C-, KC-, P+ orange, UV- Can be widespread in ancient woodland on the trunks of Oak and Beech. BLS conservation evaluation: LC E Sc IR. NIEC 'Old woodland' indicator Greyish or brownish-grey thallus (scratching orange). Scattered, punctiform soralia, initially pinkish-grey, fading white. Pycnidia and apothecia unknown. Sometimes host to the lichenicolous Arthonia invadens Often associated with Thelotrema lepadinum and Loxospora elatina

Schismatomma quercicola
Wessex Lichen Group meeting, New Forest, Hants. December 2012