Locality: MEXICO, BAJA CALIFORNIA SUR: Isla Magdalena, Punta Entrada (locally known as Punta Arena), in the Magdalena Region of the Sonoran Desert, 1992.03.19, Nash, T.H. 30443 [24°34.0'N, 112°4.0'W]
Currently accepted name:Lecanora ryanii T.H. Nash & Lumbsch