| Aristida maritima Steud., 1855 |
| Aristida mexicana Scribn. ex Henrard, 1927 |
| Aristida micrantha (Vasey) Nash, 1903 |
| Aristida muhlenbergioides E. Fourn., 1886 |
| Aristida nana (Trin. & Rupr.) Steud., 1855 |
| Aristida nealleyi (Vasey) Vasey, 1892 |
| Aristida nigrescens J. Presl, 1830 |
| Aristida oligophylla Pilg., 1898 |
| Aristida orcuttiana Vasey, 1886 |
| Aristida orizabensis E. Fourn., 1886 |
| Aristida orizabensis var. pseudospadicea (F.T. Hubb.) Henrard, 1928 |
| Aristida pallens Pursh, 1814 |
| Aristida palmeri Vasey, 1883 |
| Aristida pansa Wooton & Standl., 1913 |
| Aristida pansa f. contracta Allred & Valdés-Reyna, 1997 |
| Aristida pansa f. dissita (I.M. Johnst.) Allred & Valdés-Reyna, 1997 |
| Aristida pansa f. pansa Wooton & Standl., 1913 |
| Aristida pansa var. dissita (I.M. Johnst.) Beetle, 1974 |
| Aristida pansa var. pansa Wooton & Standl., 1913 |
| Aristida parishii Hitchc., 1912 |