Name requested: Opegrapha atra

	Annales Mycologici 6 (4): 339.
	Lichenologist 3 (1): 133, 133, 133, 133, 133, 133, 133, 133. 12 (1): 67, 67, 67, 67, 67, 67, 67, 67, 67, 67.
	Lichens of North America null: 472.
	Mycotaxon 33: 31. 37: 304. 72: 86. 105: 101.
	Sydowia 14 (1-6): 312. 16 (1-6): 87.