Name requested: Umbilicaria decussata

	Lichens of North America null: 698, 701, 702, 704, 707.
	Mycologia 60 (5): 1097.
	Mycotaxon 18 (2): 490. 21: 312. 35 (2): 385, 390, 391. 48: 259. 53: 106. 58: 223, 225.