Name requested: Agaricus mastoideus

	Mycotaxon 81: 160.
	Persoonia 17 (1): 74, 75.

Homotypic synonym: Macrolepiota mastoidea

	Mycotaxon 60: 217. 72: 220. 76: 272. 82: 191, 200, 201. 83: 461. 84: 154. 85: 184. 103: 60, 70, 72.
	Persoonia 17 (1): 69, 74, 75, 76.

Heterotypic synonym: Macrolepiota gracilenta

	Mycotaxon 62: 418. 76: 272. 83: 461.
	Persoonia 14 (4): 571. 17 (1): 75, 76.
	Sydowia 12 (1-6): 397. 15 (1-6): 175. 26 (1-6): 103.

Heterotypic synonym: Macrolepiota mastoidea var. atrobrunnea

Mycotaxon 75: 497.

Heterotypic synonym: Macrolepiota rickenii

	Mycotaxon 75: 497. 79: 405. 83: 461. 103: 70, 72.
	Persoonia 17 (1): 75, 76.