Name requested: Rhizocarpon excentricum

Sydowia 16 (1-6): 93.

Homotypic synonym: Rhizocarpon concentricum var. excentricum

Lichenologist 3 (1): 144. 12 (1): 88.

Homotypic synonym: Diplotomma excentricum

Annales Mycologici 6 (4): 338.