Name requested: Rhizocarpon reductum

	Lichenologist 3 (1): 144. 12 (1): 88. 32 (3): 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220.
	Mycotaxon 82: 427.

Heterotypic synonym: Rhizocarpon obscuratum

	Lichenologist 3 (3): 323. 12 (1): 88, 88.
	Lichens of North America null: 633, 637, 638.
	Mycotaxon 58: 219. 82: 427. 108: 235, 239.

Heterotypic synonym: Rhizocarpon postumum

Lichenologist 12 (1): 88.