Name requested: Collema nigrescens

	Lichenologist 1 (1): 22. 3 (1): 113. 12 (1): 33.
	Lichens of North America null: 283, 285, 286.
	Mycotaxon 34 (1): 39. 54: 424. 56: 128. 94: 44. 108: 9, 13, 19, 21.