Name requested: Agaricus obrusseusPersoonia 13 (2): 143, 150.
Homotypic synonym: Hygrocybe obrusseaMycology and Phytopathology 11 (3): 178. Mycotaxon 83: 485. Persoonia 13 (2): 143, 150, 153.
Homotypic synonym: Hygrophorus obrusseusAnnales Mycologici 12 (4): 433. Persoonia 13 (2): 150, 151. Sydowia 15 (1-6): 166.