| Panicum aciculare Desv. ex Poir., 1816 |
| Panicum aciculare var. aciculare Desv. ex Poir., 1816 |
| Panicum aciculare var. angustifolium (Elliott) Wipff & S.D. Jones, 1994 |
| Panicum aciculare var. arenicoloides (Ashe) Beetle, 1981 |
| Panicum aciculare var. ovinum (Scribn. & J.G. Sm.) Beetle, 1981 |
| Panicum acuminatum Sw., 1788 |
| Panicum acuminatum var. columbianum (Scribn.) Lelong, 1984 |
| Panicum acuminatum var. consanguineum (Kunth) Wipff & S.D. Jones, 1994 |
| Panicum acuminatum var. fasciculatum (Torr.) Lelong, 1984 |
| Panicum acuminatum var. implicatum (Scribn.) Beetle, 1981 |
| Panicum acuminatum var. leucothrix (Nash) Lelong, 1984 |
| Panicum acuminatum var. lidheimeri (Nash) Lelong, 1984 |
| Panicum acuminatum var. lindheimeri (Nash) Beetle, 1981 |
| Panicum acuminatum var. longiligulatum (Nash) Lelong, 1984 |
| Panicum acuminatum var. thurowii (Scribn. & J.G. Sm.) C.F. Reed, 1989 |
| Panicum acuminatum var. villosum (A. Gray) Beetle, 1981 |
| Panicum acutiflorum Steud., 1854 |
| Panicum acutifolium Willd. ex Spreng., 1825 |
| Panicum acutiglumum Steud., 1855 |
| Panicum addisonii Nash, 1898 |