Thallus crustose, continuous, whitish to greenish gray; vegetative diaspores absent; photobiont Trentepohlia alga. Ascomata lirellae, erumpent, with lateral thalline margin, short to moderately, elongate, narrow, 0.5-2.0(-3.0) x 0.1-0.35 mm, straight or slightly curved, usually unbranched; labia black, entire; disk closed or narrowly open; exciple laterally carbonized; epithecium pale; hymenium hyaline, inspersed with oil droplets; hypothecium hyaline. Asci clavate, 8-spored. Ascospores colorless, ellipsoid, 7-9-septate, 28-38 x 7-8 μm.
Chemistry. Spot tests all negative, secondary metabolites unknown.
Substrate and Habitat. On smooth bark of hardwood trees, in forests.
Distribution. Pantropical; in North Carolina throughout, mostly recorded from the Coastal Plain.
Acharius, E. (1810) Lichenographia Universalis. Gottingae, Apud Iust. Frid. Danckwerts, 1-696.
Fink, B. (1935) The Lichen Flora of the United States. University of Michigan Press, Ann Arbor.
Kalb, J., R. Lücking, R. & K. Kalb. (2018) The lichen genera Allographa and Graphis (Ascomycota: Ostropales, Graphidaceae) in Thailand—eleven new species, forty-seven new records and a key to all one hundred and fifteen species so far recorded for the country. Phytotaxa377(1): 1-83.