| Pheopolykrikos hartmannii (Zimmerman) Matsuoka & Fukuyo, 1986 |
| Phlogiotis Quél., 1886 |
| Phlogiotis helvelloides (DC.) G. W. Martin, 1936 |
| Phoebus R.C. Harris & Ladd., 2007 |
| Phoebus hydrophobius R.C. Harris & Ladd., 2007 |
| Phragmocephala E. W. Mason & S. Hughes, 1951 |
| Phragmocephala atra (Berk. & Broome) E. W. Mason & S. Hughes, 1951 |
| Phragmocephala elliptica (Berk. & Broome) S. Hughes, 1979 |
| Phragmocephala glanduliformis (Höhn.) S. Hughes, 1955 |
| Phragmospathula Subram. & N. G. Nair, 1966 |
| Phragmospathula phoenicis Subram. & N. G. Nair, 1966 |
| Phyllobothrium Van Beneden, 1850 |
| Phyllobothrium hallericola Church & Schmidt, 1990 |
| Physalidiella Rulamort, 1990 |
| Physalidiella elegans (Mosca) Rulamort, 1990 |
| Physalidiella matsushimae (R. F. Castañeda & W. B. Kendr.) M. Morelet, 1995 |
| Piricauda Bubák, 1914 |
| Piricauda cochinensis (Subram.) M. B. Ellis, 1976 |
| Piricauda longispora Mercado, Gené & Guarro, 1997 |
| Piricauda mexicana Mercado, Heredia & J. Mena, 1997 |