Name requested: Lichen scalaris

Lichenologist 3 (3): 318.

Homotypic synonym: Psora scalaris

	Lichenologist 12 (1): 45.
	Lichens of North America null: 344.
	Mycotaxon 37: 442.

Homotypic synonym: Hypocenomyce scalaris

	Lichenologist 12 (1): 45, 45, 45, 45, 45.
	Lichens of North America null: 135, 344, 345.
	Mycotaxon 34 (1): 39. 35 (2): 421. 37: 441, 442, 443, 445, 446, 447, 448, 450, 451, 452, 454, 455, 456, 457, 460. 42: 271. 50: 55. 51: 506. 52 (2): 539, 548, 549, 550, 557. 58: 207. 77: 324, 445, 449, 450, 451, 452. 84: 299. 87: 338, 344, 345, 346. 94: 220. 97: 52. 102: 157. 104: 265, 283. 108: 302, 303.

Heterotypic synonym: Psora ostreata

	Lichenologist 3 (3): 318. 12 (1): 45.
	Mycologia 5 (3): 150.
	Mycotaxon 37: 442.

Heterotypic synonym: Lecidea ostreata

	Annales Mycologici 36 (2-3): 137.
	Lichenologist 3 (1): 128. 3 (3): 318. 12 (1): 45.
	Mycotaxon 37: 442.