Name requested: Usnea ceratina

	Annales Mycologici 6 (4): 332.
	Lichenologist 12 (1): 102.
	Lichens of North America null: 711, 712, 715, 723, 764.
	Mycologia 4 (3): 138. 6 (5): 263.
	Mycotaxon 27: 493. 35 (2): 424. 89 (1): 173, 177. 95: 311.