Umbilicaria mammulata (Ach.) Tuck.

IMI 400889. Fundort: USA; West Virginia; Pendleton County, 1 mile south of Spruce Knob (N38°07' W79°5x'). Kollektionsdatum: 8 Juli 1990. Sammler: Hawksworth, D.L.. Identifizierer: David, J.C..