Name requested: Phacidium tetrasporum

	Annales Mycologici 15 (5): 337.
	Mycologia 5 (1): 6, 8. 55 (4): 415.
	Mycotaxon 21: 46.

Homotypic synonym: Keithia tetraspora

Mycologia 5 (1): 6, 6, 7, 7, 8, 8, 9, 10, 11. 5 (2): 81. 46 (3): 388. 54 (1): 20. 55 (4): 415.

Homotypic synonym: Didymascella tetraspora

	Mycologia 54 (1): 28. 55 (4): 415, 416, 417, 418, 419.
	Persoonia 14 (4): 502.

Heterotypic synonym: Didymascella oxycedri

	Annales Mycologici 15 (5): 337.
	Mycologia 5 (1): 8. 54 (1): 20. 55 (4): 415, 416, 417, 418, 419.
	Mycotaxon 21: 46.