| Poaceae | |
Muhlenbergia mexicana fo. ambigua
| (Torr.) Fernald | Rhodora 45(534): 236 | 1943 |
| Poaceae | |
Muhlenbergia mexicana fo. commutata
| (Scribn.) Wiegand | Rhodora 26(301): 1 | 1924 |
| Poaceae | ! |
Muhlenbergia mexicana subsp. commutata
| Scribn. | Rhodora 9(98): 18–19 | 1907 |
| Poaceae | |
Muhlenbergia mexicana var. commutata
| (Scribn.) Farw. | Rep. Michigan Acad. Sci. 17: 181 | 1916 |
| Poaceae | ** |
Muhlenbergia mexicana var. filiformis
| Vasey | Grass. U.S. 23 | 1883 |
| Poaceae | ! |
Muhlenbergia mexicana var. filiformis
| (Torr.) Scribn. | Mem. Torrey Bot. Club 5: 36 | 1894 |
| Poaceae | |
Muhlenbergia mexicana fo. mexicana
| | | |
| Poaceae | |
Muhlenbergia mexicana subsp. mexicana
| | | |
| Poaceae | |
Muhlenbergia mexicana var. mexicana
| | | |
| Poaceae | |
Muhlenbergia mexicana var. purpurea
| Alph. Wood | Amer. Bot. Fl. pt. 2: 386 | 1871 |
| Poaceae | |
Muhlenbergia mexicana fo. setiglumis
| (S. Watson) Fernald | Rhodora 45(534): 236 | 1943 |