Graphina anguina 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) Ám. Micro photo below.

Graphis scripta and Phaeographis dentritica have septate spores.
The non-lichenised bark fungus Gloniopsis has muriform spores, I-

Graphina anguina

Graphina anguina

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

All images used are copyright. Please contact me if you find errors.