| Listeromyces insignis Penz. & Sacc., 1902 |
| Lobocolax M. Howe, 1914 |
| Lobocolax deformans M. Howe, 1914 |
| Lodderomyces Van del Walt, 1966 |
| Lodderomyces elongisporus (Recca & Mrak) Van del Walt, 1971 |
| Lychnagalma Haeckel, 1888 |
| Lychnagalma utricularia (Claus, 1879) |
| Lymnorea Péron & Lesueur, 1810 |
| Lymnorea borealis Mayer, 1900 |
| Lyrella N.I. Karajeva, 1978 |
| Lyrella abruptoides (Hust.) D.G. Mann, 1990 |
| Lyrella approximata (Grev.) D.G. Mann, 1990 |
| Lyrella approximatoides (Hust.) D.G. Mann, 1990 |
| Lyrella atlantica (A. Schmidt) D.G. Mann, 1990 |
| Lyrella barbara (Hied.) D.G. Mann, 1990 |
| Lyrella californica (Grev. e) D.G. Mann, 1990 |
| Lyrella clavata (W. Greg.) D.G. Mann, 1990 |
| Lyrella clavata var. clavata (W. Greg.) D.G. Mann, 1990 |
| Lyrella clavata var. indica (Grev.) Moreno, 1996 |
| Lyrella clavata var. subconstricta (Hust.) Moreno, 1996 |