Name requested: Placodium murorum

	Lichenologist 3 (1): 108. 3 (3): 310. 12 (1): 23.
	Mycologia 1 (3): 88, 91. 5 (3): 129, 132. 11 (6): 305.
	Mycotaxon 27: 463, 489. 58: 200, 217. 97: 69.