Name requested: Pachydisca immutabilis

	Mycological Papers 62: 93.
	Mycotaxon 45: 29.

Heterotypic synonym: Helotium immutabile

	Mycologia 44 (5): 716. 67 (5): 1067.
	Mycological Papers 62: 93.
	Mycotaxon 13 (1): 68, 69, 73, 74, 76, 83. 45: 29, 30.
	Persoonia 3 (1): 76.

Heterotypic synonym: Hymenoscyphus immutabilis

	Mycotaxon 13 (1): 60, 65, 73, 74. 29: 424. 45: 9, 28, 29, 30, 38. 75: 400. 79: 308, 310. 81: 37. 99: 124, 126. 103: 190, 191, 192.
	Persoonia 3 (1): 76.