Graphidaceae Graphis inustuloides (Graphina anguina) Growth type crustose. Chemical reactions negative. Spores I+ violet Infrequent on slightly shaded smooth-barked trees, often in secondary woodland or coppices Whitish-grey thallus, slightly shiny and often wrinkled or cracked. Lirellae serpentine, usually star-shaped and +/- pruinose. Thalline margin often elevated, carbonaceous margin flat with narrow disc. Spores are colourless, muriform, (20-)25-50(-60) x 12-16(-20) µm. Micro photo below. Graphis scripta and Phaeographis dentritica have septate spores. The non-lichenised bark fungus Gloniopsis has muriform spores, I-

Microscope photograph

Graphina anguina
Studland and Badbury Rings, Dorset. December 2013, March 2016