| 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 |
| Marasmiaceae Roze ex Kühner, 1980 |
| Marasmiellus Murrill, 1915 |
| Marasmiellus albobrunnescens Singer, 1973 |
| Marasmiellus alneus Singer, 1973 |
| Marasmiellus androsaceiformis Singer, 1973 |
| Marasmiellus angustispermus Singer, 1973 |
| Marasmiellus aurantiorufescens Singer, 1973 |
| Marasmiellus bermudensis (Berk.) Singer, 1973 |