| Actinocyclus Klotzsch, 1858 |
| Actinocyclus secundus (L.) Klotzsch, 1857 |
| Agarista D. Don ex G. Don, 1834 |
| Agarista mexicana (Hemsl.) Judd, 1979 |
| Agarista mexicana var. mexicana (Hemsl.) Judd, 1979 |
| Agarista mexicana var. pinetorum (Standl. & L.O. Williams) Judd, 1979 |
| Agarista sleumeri Judd, 1984 |
| Agarista villarrealana L.M. González, 1989 |
| Andromeda L., 1753 |
| Andromeda ferruginea Walter, 1788 |
| Andromeda mexicana Hemsl., 1881 |
| Andromeda prostrata Cav., 1801 |
| Andromeda squamulosa (D. Don) Small, 1825 |
| Andromedeae Klotzsch, 1838 |
| Anthopterus Hook., 1839 |
| Arbuteae Meisn., 1839 |
| Arbutoideae Nied., 1899 |
| Arbutus L., 1753 |
| Arbutus arizonica (A. Gray) Sarg., 1891 |
| Arbutus bicolor S. González, M. González & P.D. Sørensen, 2012 |