Opuscula Philolichenum 4: 52 (2007); type: U.S.A. North Carolina, Swain Co., Great Smoky Mountains National Park, Balsam Mountain, 35° 36.2’ N, 083° 11.5’ W, 20. Jun. 2002, T. Tønsberg 30941 (BG—holotypus; DUKE—isotypus).

Thallus crustose, leprose, with powdery to granular, consisting of relatively sparse individual soredia appearance; greyish white; thin, attached to the substrate; shape irregular, often thalli fused and contiguous, young individual thalli up to few mm, later large fused covers form; margin diffuse, lobes absent; cortex absent; medulla absent; areoles absent; squamules absent; thallus surfaces without soredia absent, soredia abundant to scattered, very fine, to 30 µm in diam., relatively densely packed; with more or less complete wall of colourless hyphae; projecting hyphae absent; consoredia present, up to 50 µm, few aggregations larger; isidia-like structures absent. Photobiont trebouxioid, cells to 13 µm in diam.