| Marasmius rubroflavus (Theiss.) Singer, 1951 |
| Marasmius rufomarginatus Singer, 1959 |
| Marasmius ruforotula Singer, 1948 |
| Marasmius scorodonius (Fr.) Fr., 1836 |
| Marasmius scototephrodes Singer, 1976 |
| Marasmius siccus (Schwein.) Fr., 1838 |
| Marasmius singeri Guzmán, 1974 |
| Marasmius spegazzinii Sacc. & P. Syd., 1899 |
| Marasmius strictipes (Peck) Singer, 1943 |
| Marasmius sublividus (Murrill) Sacc. & Trotter, 1925 |
| Marasmius sullivanti Mont., 1856 |
| Marasmius tageticolor Berk., 1856 |
| Marasmius tenacellus (Pers.) J. Favre, 1939 |
| Marasmius trinitatis Dennis, 1951 |
| Marasmius wilsonii Murrill, 1915 |
| Marasmius xerampelianus Singer, 1976 |
| Megacollybia Kotl. & Pouzar, 1972 |
| Megacollybia platyphylla (Pers.) Kotl. & Pouzar, 1972 |
| Micromphale Gray, 1821 |
| Micromphale griseum Singer, 1973 |