| 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 |
| Marasmiellus cinereus Singer, 1973 |
| Marasmiellus cnacopolius Singer, 1973 |
| Marasmiellus corynophloeus Singer, 1973 |
| Marasmiellus crinipelloides Singer, 1973 |
| Marasmiellus cubensis (Berk. & M. A. Curtis) Singer, 1962 |
| Marasmiellus dendroegrus Singer, 1973 |
| Marasmiellus diaphanus César, Bandala & Montoya, 2020 |
| Marasmiellus dryogeton Singer, 1973 |
| Marasmiellus fibula (Bull.) Singer, 1948 |
| Marasmiellus gomez-pompae Singer, 1973 |
| Marasmiellus guzmanii Singer, 1973 |
| Marasmiellus hondurensis (Murrill) Singer, 1973 |
| Marasmiellus ignobilis (Berk. & Broome) Pegler, 1977 |