| Muhlenbergia tenuifolia (Kunth) Kunth, 1829 |
| Muhlenbergia tenuifolia (Kunth) Trin., 1824 |
| Muhlenbergia tenuissima (J. Presl) Kunth, 1833 |
| Muhlenbergia texana Buckley, 1862 |
| Muhlenbergia texana Thurb. ex Porter & J.M. Coult., 1874 |
| Muhlenbergia thurberi (Scribn.) Rydb., 1905 |
| Muhlenbergia torreyi (Kunth) Hitchc. ex Bush, 1919 |
| Muhlenbergia trichodes Steud., 1854 |
| Muhlenbergia tricholepis (Torr.) Columbus, 2010 |
| Muhlenbergia trichopodes (Elliott) Chapm., 1860 |
| Muhlenbergia trifida Hack., 1910 |
| Muhlenbergia uniseta (Lag.) Columbus, 2010 |
| Muhlenbergia utilis (Torr.) Hitchc., 1933 |
| Muhlenbergia vaginata Swallen, 1950 |
| Muhlenbergia vaseyana Scribn., 1899 |
| Muhlenbergia versicolor Swallen, 1950 |
| Muhlenbergia villiflora Hitchc., 1935 |
| Muhlenbergia villiflora var. villiflora Hitchc., 1935 |
| Muhlenbergia virescens (Kunth) Kunth, 1829 |
| Muhlenbergia virescens (Kunth) Trin., 1824 |