Name requested: Agaricus lacteusMycotaxon 79: 427.
Homotypic synonym: Mycena lacteaMycologia 26 (4): 309, 326. 51 (3): 382. Mycology and Phytopathology [as Микология и Фитопатология] 5 (4): 327. 8 (5): 404. 12 (5): 372. Mycotaxon 81: 131. 83: 110. 91: 329. Persoonia 10 (1): 130, 133*. Sydowia 8 (1-6): 46. 9 (1-6): 248, 252. Transactions of the Mycological Society of Japan 23 (4): 502.
Homotypic synonym: Hemimycena lacteaMycotaxon 42: 188. 81: 131. 83: 110. 91: 323, 328, 329, 330, 331. Persoonia 16 (2): 226. Sydowia 4 (1-6): 107.
Heterotypic synonym: Mycena delicatellaMycologia 40 (2): 268. Mycotaxon 42: 188. 91: 329.
Heterotypic synonym: Hemimycena delicatellaMycotaxon 42: 188. 81: 131. 91: 329. Sydowia 15 (1-6): 60.