| Alectoridia A. Rich., 1850 |
| Alectoridia quartiniana A. Rich., 1850 |
| Alloiatheros Elliott ex Raf., 1830 |
| Allolepis Soderstr. & H.F. Decker, 1965 |
| Allolepis texana (Vasey) Soderstr. & H.F. Decker, 1965 |
| Alopecurinae Dumort., 1829 |
| Alopecuropsis Opiz, 1857 |
| Alopecurus L., 1753 |
| Alopecurus aequalis Sobol., 1799 |
| Alopecurus australis Nees, 1843 |
| Alopecurus californicus Vasey, 1888 |
| Alopecurus carolinianus Spreng., 1801 |
| Alopecurus elongatus (Kunth) Poir., 1817 |
| Alopecurus geniculatus L., 1753 |
| Alopecurus geniculatus var. aquaticus Schltdl., 1823 |
| Alopecurus geniculatus var. viridis Neilr., 1857 |
| Alopecurus howellii Vasey, 1888 |
| Alopecurus interruptus (Kunth) Poir., 1817 |
| Alopecurus maritimus (Willd.) Poir., 1808 |
| Alopecurus monspeliensis L., 1753 |