TYPE. UNITED STATES. Florida, Seminole County, Sanford, 1931, S. Rapp 71 (US, isotype).

Description. Life form: lichenized fungus.

Thallus crustose, epiphloeodal, verruculose, continuous, whitish, up to 30 μm thick; vegetative diaspores absent. Photobiont Trentepohlia; cells subglobose, 10-12 um diam. Ascomata apothecoid in thalline warts; warts rounded, sloping, up to 1 mm daim.; disk pore-like, round, blackish, with narrow white ring. Exciple carbonized, as a columella; hymenium subglobose, hyaline, I-; paraphyses capillary-filiform, dense, tight, simple, septate, not widened at tips. Asci oblong-clavate, 1-2-spored; ascospores hyaline, densely muriform, 132-150 x 30-34 μm.

Chemistry. K+ yellowish, C-, PD-; no substances detected by TLC.

Substrate and Habitat. Corticolous hardwood trees.

Distribution. Southeastern North America along Gulf and Atlantic coasts; in North Carolina found in the Coastal Plain ecoregion.

Literature

Harris, R.C. (1995) More Florida Lichens. Including the 10¢ Tour of the Pyrenolichens. Published by the Author, Bronx, N.Y. 192 pp.

Lendemer, J.C., R.C. Harris, & A.M. Ruiz. (2016). A review of the lichens of the Dare regional biodiversity hotspot in the Mid-Atlantic Coastal Plain of North Carolina, eastern North America. Castanea 81(1): 1-77.

Zahlbruckner, A. (1935) Florida-Flechten, gesammelt von S. Rapp. Annales Mycologici. 33(1-2): 33-45 (original description as Thelotrema sanfordianum).