| Sporobolus pumilus (Roth) P.M. Peterson & Saarela, 2014 |
| Sporobolus purpurascens (Sw.) Ham., 1825 |
| Sporobolus purpurascens (Sw.) Kuhlm., 1922 |
| Sporobolus pyramidalis P. Beauv., 1816 |
| Sporobolus pyramidatus (Lam.) Hitchc., 1936 |
| Sporobolus pyramidatus subsp. domingensis (Trin.) Catasús, 1996 |
| Sporobolus racemosus Vasey, 1887 |
| Sporobolus ramulosus (Kunth) Kunth, 1829 |
| Sporobolus regis I.M. Johnst., 1943 |
| Sporobolus repens J. Presl, 1830 |
| Sporobolus richardsonis (Trin.) Merr., 1902 |
| Sporobolus sabeanus Buckley ex Vasey, 1892 |
| Sporobolus sacatilla Griseb. ex E. Fourn., 1886 |
| Sporobolus sarmentosus Griseb., 1879 |
| Sporobolus schoenoides (L.) P.M. Peterson, 2014 |
| Sporobolus shepherdii Vasey, 1887 |
| Sporobolus simplex Scribn., 1898 |
| Sporobolus simplex var. thermale Merr., 1902 |
| Sporobolus spartinae (Trin.) P.M. Peterson & Saarela, 2014 |
| Sporobolus spiciformis Swallen, 1943 |