| Paspalum conjugatum var. tristachyum Vanderyst, 1918 |
| Paspalum consanguineum (Gaudich.) Kunth, 1833 |
| Paspalum conspersum Schrad., 1824 |
| Paspalum convexum Humb. & Bonpl. ex Flüggé, 1810 |
| Paspalum convexum Willd. ex Döll, 1877 |
| Paspalum corcovadense Raddi, 1823 |
| Paspalum coryphaeum Trin., 1826 |
| Paspalum costaricense Mez, 1917 |
| Paspalum crassum Chase, 1913 |
| Paspalum crinitum Chase ex Hitchc., 1913 |
| Paspalum cubense Spreng., 1822 |
| Paspalum cujabense Trin., 1831 |
| Paspalum culiacanum Vasey, 1893 |
| Paspalum cuyabense Trin., 1831 |
| Paspalum cymbiforme E. Fourn., 1886 |
| Paspalum cynosuroides (L.) Brot., 1804 |
| Paspalum decumbens Sagot ex Döll, 1877 |
| Paspalum decumbens Sw., 1788 |
| Paspalum delochei Steud., 1855 |
| Paspalum densum Poir., 1804 |