TYPE. “On various trees, Cotoosa river, Florida [United States], Austin.” Tuckerman (1882).

Description. Life form: lichenized fungus.

Thallus crustose, thin, grayish green; vegetative diaspores absent; cortex well-developed; medulla thick. Photobiont Trentepohlia alga. Ascomata thelotremoid (double-walled with thalline and free excipular rims; disk in pore), 0.2-3.0 mm diam; disk blackish. Hymenium hyaline. Asci 8-spored; ascospores hyaline, 8-13-celled, 25-45 x 6-8 μm, I+ blue-violet.

Chemistry. No substances detected by TLC.

Substrate and Habitat. Corticolous on trees.

Distribution. Southeastern North America; in North Carolina found in the Coastal Plain ecoregion.

Literature

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., F. Seavey, R. Common, S.Q. Beeching, O. Breuss, W.R. Buck, L. Crane, M. Hodges, B.P. Hodkinson, E. Lay, J.C. Lendemer, R.T. McMullin, J.A. Mercado-Díaz, M.P. Nelsen, E. Rivas Plata, W. Safranek, W.B. Sanders, H.P. Schaefer Jr., & J. Seavey. (2011) The lichens of Fakahatchee Strand Preserve State Park, Florida: Proceedings from the 18th Tuckerman Workshop. Bulletin of the Florida Museum of Natural History 49(4): 127-186.

Tuckerman, E. (1882) A synopsis of the North American lichens. Part. I. Comprising the Parmeliacei, Cladoniei and Coenogoniei. S.F. Cassino, Boston, 262 pp. (original description).