| Paspalum papillosum Spreng., 1819 |
| Paspalum paspalodes (Michx.) Scribn., 1894 |
| Paspalum paspaloides (Michx.) Scribn., 1894 |
| Paspalum paucispicatum Vasey, 1893 |
| Paspalum pauperculum E. Fourn., 1886 |
| Paspalum pauperculum var. altius E. Fourn., 1886 |
| Paspalum pectinatum Nees ex Trin., 1828 |
| Paspalum pectinatum Nees, 1829 |
| Paspalum pedunculare J. Presl, 1830 |
| Paspalum peregrinum A.G. Burm. & Filg., 1985 |
| Paspalum pilosum Lam., 1791 |
| Paspalum planifolium E. Fourn., 1886 |
| Paspalum planiusculum Swallen, 1967 |
| Paspalum plantagineum Nees, 1829 |
| Paspalum platense Spreng., 1825 |
| Paspalum platicaulon Poir., 1804 |
| Paspalum platyaxis (Döll) Mez, 1917 |
| Paspalum platycaule Willd. ex Steud., 1841 |
| Paspalum plenum Chase, 1929 |
| Paspalum plicatulum Michx., 1803 |