TYPE. UNITED STATES. FLORIDA, W.W. Calkins s.n. (MICH, Fink hb. 15,512, holotype)
Description. Lichenized fungus.
Thallus crustose, thin, verrucose, ashy green or tan; vegetative diaspores absent; photobiont Trentepohlia alga. Ascomata perithecia embedded in hemispherical thalline warts, 0.3-0.7 mm diam. Hamathecium of paraphyses, usually unbranched; hymenial gel nonamyloid (I-, K/I-). Asci clavate-cylindrical, 8-spored. Ascospores hyaline, acicular-fusiform with one end long-tapered, 6-14-celled, 65-90 × 10–12 μm. Pycnidia not reported.
Chemistry. Not reported.
Substrate and Habitat. On bark of hardwood trees, in forests.
Distribution. Eastern North America; in North Carolina found throughout.
Harris, R.C. (1995) More Florida Lichens, Including the 10¢ Tour of the Pyrenolichens. Published by the Author, Bronx, N.Y. 192 pp.
Hedrick, J. (1933) New Genera and Species of Lichens from the Herbarium of Bruce Fink I. Mycologia25(4): 303–316 (original description as Porina nucula var. heterospora).