TYPE. GUADELOUPE. Ad corticem Spondiae (Monbin) prope Gourbeyre, 390 m, P. Duss 541 (TUR-Vain. 27617, holotype; NY 1220323, isotype).
Description.Life form: lichenized fungus.
Thallus crustose, off-white, whitish gray to gray, continuous, smooth, dull or slightly glossy; vegetative diaspores absent. Photobiont trentepohlioid alga. Ascomata lirellae, immersed to erumpent with lateral thalline margin, short to elongate, curved and sinuous, unbranched or sparsely branched; labia first convergent, becoming divergent with age, entire, black, not pruinose; disk usually visible from above, blackish to brownish, whitish pruinose (scripta-morph). Exciple laterally, rarely almost completely carbonized; hymenium inspersed. Asci 8-spored; ascospores hyaline, transversely septate, 5–9-septate, 20–30 × 5–8 μm.
Substrate and Habitat. Corticolous on hardwood trees.
Distribution. Pantropical, north into eastern North America; in North Carolina found in Coastal Plain ecoregion.
Literature
Kalb, J., R. Lücking & 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.
Vainio, E.A. (1899) Lichenes novi rarioresque, ser. III. Beiblatt zur Hedwigia38:(253)-(259) (original description).