| Alopecurus myosuroides Huds., 1762 |
| Alopecurus pallescens Piper, 1901 |
| Alopecurus palustris Syme, 1872 |
| Alopecurus palustris subsp. geniculatus (L.) Syme, 1873 |
| Alopecurus saccatus Vasey, 1881 |
| Alopecurus typhoides Burm. f., 1768 |
| Alopecurus ventricosus (Gouan) Huds., 1778 |
| Alycia Willd. ex Steud., 1840 |
| Amagris Raf., 1814 |
| Amaxitis Adans., 1763 |
| Amblyopyrum (Jaub. & Spach) Eig, 1929 |
| Amelichloa Arriaga & Barkworth, 2006 |
| Amelichloa clandestina (Hack.) Arriaga & Barkworth, 2006 |
| Amphidonax Nees ex Lindl., 1836 |
| Amphigenes Janka, 1860 |
| Amphilohis (Trin.) Roberty, 1960 |
| Amphilophis Nash, 1901 |
| Amphilophis Trin., 1832 |
| Amphilophis barbinodis (Lag.) Nash, 1903 |
| Amphilophis emersus (E. Fourn.) Nash, 1912 |