| Allium palmeri S. Watson, 1871 |
| Allium parryi S. Watson, 1879 |
| Allium peninsulare Lemmon ex Greene, 1888 |
| Allium plummerae S. Watson, 1883 |
| Allium porrum L., 1753 |
| Allium potosiense Traub, 1969 |
| Allium praecox Brandegee, 1906 |
| Allium pueblanum Traub, 1968 |
| Allium recurvatum Rydb., 1900 |
| Allium reticulatum Fraser ex G. Don, 1827 |
| Allium reticulatum var. deserticola M.E. Jones, 1902 |
| Allium rhizomatum Wooton & Standl., 1913 |
| Allium runyonii Ownbey, 1950 |
| Allium sativum L., 1753 |
| Allium scaposum Benth., 1840 |
| Allium schoenoprasum L., 1753 |
| Allium stoloniferum Ownbey ex T.D. Jacobsen, 1979 |
| Allium striatellum Lindl., 1835 |
| Allium striatum Jacq., 1793 |
| Allium subbiflorum Colla, 1837 |