TYPE. UNITED STATES. North Carolina, Transylvania County, on Acer [maple], 8.V.1995, T. Tønsberg 21770 (BG, holotype).
Description.Life form: lichenized fungus.
[Modified from Kalb 2004] Thallus corticolous, 0.1-0.3 mm thick, continuous, areolate, warty, grayish, greenish to pale tan; warts hemispheric, 0.2-0.3 mm diam., filled with large CaCO3 crystals. Vegetative diaspores soredia in soralia on thallus surface; soralia hemispheric, 0.5-1.5 mm diam., discrete or confluent; soredia finely granular, 25-50 μm diam. Photobiont chlorococcoid alga. Ascomata lecanorine apothecia, sessile, contricted at base, 0.7-1.3 mm diam.; disk flat, flesh-colored to pale brownish, epruinose; thalline rim (amphithecium) thick, crenulate, entire or sorediate. Asci 8-spored; ascospores simple, hyaline, fusiform to broadly fusiform, 11-16 x 4-9 μm.