Name requested: Hygrophorus laetus

	Mycologia 7 (6): 302. 27 (6): 598. 38 (2): 186. 56 (4): 605. 59 (5): 915. 67 (6): 1210.
	Mycotaxon 63: 25.
	Persoonia 8 (1): 103. 14 (4): 497.
	Sydowia 8 (1-6): 329, 330, 331. 15 (1-6): 166.
	Transactions of the Mycological Society of Japan 23 (4): 501.

Homotypic synonym: Hygrocybe laeta

	Mycotaxon 83: 484.
	Persoonia 2 (1): 14. 13 (1): 64. 13 (2): 153.
	Transactions of the Mycological Society of Japan 30 (2): 246.

Homotypic synonym: Agaricus laetus

Persoonia 2 (1): 14.