TYPE. UNITED STATES Florida, Franklin County, Apalachicola National Forest, Black Creek at end of Forest Service Road 1014, ~2 mi S of Sumatra, 1.XII.1988, R.C. Harris 23223 (NY, holotype).
Description. Life form: lichenized fungus.
Thallus crustose, whitish, continuous, ecorticate; vegetative diaspores absent. Photobiont trentepohlioid alga. Ascomata lirellae, erumpent to sessile, lacking thalline margin, elongate, straight, curved or sinuous, branched; labia black, epruinose; disk concealed to narrowly exposed, orange. Exciple laterally carbonized; epihymenium with orange granular pigment; hymenium not inspersed. Asci 8-spored; ascospores hyaline, transversely 7-septate, 23-30 × 6-7 μm.
Chemistry. No substances detected by TLC; orange epihymenium pigment K+ purple (anthraquinones).
Substrate and Habitat. Corticolous on hardwood trees.
Distribution. Southeastern North America; in North Carolina found in the Coastal Plain and eastern Piedmont ecoregions.
Harris, R.C. (1990) Some Florida Lichens. Published by the Author, Bronx, N.Y. 109 pp.
Harris, R.C. (1995) More Florida Lichens. Including the 10¢ Tour of the Pyrenolichens. Published by the Author, Bronx, N.Y. 192 pp.
Lücking, R., A.W. Archer & A. Aptroot (2009) A world-wide key to the genus Graphis (Ostropales: Graphidaceae). Lichenologist 41(4): 363-452.