Name requested: Rhizocarpon geminatum

	Lichenologist 3 (1): 144, 144. 12 (1): 88, 88. 34 (6): 454.
	Lichens of North America null: 633, 634, 635.
	Mycotaxon 18 (2): 490. 35 (2): 384, 388, 391. 38: 133, 137. 48: 258, 263, 265, 267. 50: 328. 53: 105. 58: 219. 74 (2): 437, 439, 443. 86: 152.