Name requested: Placynthium asperellum

	Lichenologist 12 (1): 79. 13 (3): 307, 308, 309. 16 (3): 269.
	Lichens of North America null: 573.
	Mycotaxon 35 (2): 384. 48: 258, 265. 58: 217. 74 (2): 437, 438, 443.
	Sydowia 22 (1-4): 222.