| Gymnopus roseilividus Murrill, 1916 |
| Gymnopus russulus (Schaeff.) Gray, 1821 |
| Gymnopus subnudus (Elix ex Peck) Halling, 1997 |
| Gymnopus subsulphureus (Peck) Murrill, 1916 |
| Hydropus Kühner ex Singer, 1948 |
| Hydropus atramentosus (Kalchbr.) Kotl. & Pouzar, 1962 |
| Hydropus cavipes (Pat. & Gaillard) Dennis, 1970 |
| Hydropus nigrita (Berk. & M. A. Curtis) Singer, 1973 |
| Hydropus verae-crucis Singer, 1973 |
| Hydropus xuchiliensis (Murrill) Singer, 1982 |
| Lactocollybia Singer, 1939 |
| Lactocollybia angiospermarum Singer, 1948 |
| Lactocollybia aurantiaca Singer, 1952 |
| Lactocollybia ianthina (Heim) Singer, 1961 |
| Lentinula Earle, 1909 |
| Lentinula boryana (Berk. & Mont.) Pegler, 1976 |
| Lentinula edodes (Berk.) Pegler, 1976 |
| Macrocystidia Joss., 1934 |
| Macrocystidia cucumis (Pers.) Joss., 1934 |
| Marasmiaceae Roze ex Kühner, 1980 |