Mycol. Progr. 9, 2: 264 (2010).

Basionym: Umbilicaria caroliniana Tuck., Proc. Amer. Acad. Arts & Sci. 12: 167 (1877).

Protolog: Thallo membranaceo laevigato papuloso rotundato-lobato mox polyphyllo complicatoque olivaceo-fusco, subtus lacunoso papillato-granulato atro, fibrillis paucis hinc inde obsito; apotheciis subelevatis mox plicatis deinque papillato-proliferis. Sporae (2ae?) ellipsoideae, muriformi-multiloculates, fuscae, longit. 0,030-40mm, crassit. 0,020-23mm.

Protolog type data: Rocks, Grandfather Mountain, N. Carolina, M. A. Curtis. High mountains of N. Carolina, S. B. Buckley.

Type locality: USA, North Carolina, Appalachen, Blue Ridge Mountains, Grandfather Mountain, rocks, ca. 1810 m, M. A. Curtis. Called "Type" by Davydov et al. (2010).

Type locality coordinates: 36°6'41.58"N, 81°48'41.69"W; 36.11155°, -81.81158°.

Type locality photo: Grandfather Mountain.