TYPE. UNITED STATES. Florida. 0kaloosa County, oak-pine scrub along Antioch Road (Co. Rd. 4) 1.2 mi. W of Fla. Hwy. 85, ~4 mi S of Crestview, on Quercus, 5.V.1990, R.C. Harris 25174 (NY, holotype).
Description. Life form: lichenized fungus.
Thallus crustose, white, ecorticate; vegetative diaspores absent. Photobiont trentepohlioid alga. Ascomata lirellae, prominent, lacking thalline margin, black, weakly striate, short to elongate, flexuose, sparsely to irregularly branched; disk concealed (striatula-morph). Exciple laterally carbonized; hymenium clear. Asci 6-8-spored; ascospores hyaline, transversely 5–9-septate, 20–40 × 7-10 μm.
Chemistry. UV+ yellow (lichexanthone)
Substrate and Habitat. Corticolous on hardwood trees.
Distribution. Neotropical; in North Carolina found in the Coastal Plain ecoregion.
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.