| Agastache pallida var. pallida (Lindl.) Cory, 1936 |
| Agastache pallidiflora (A. Heller) Rydb., 1906 |
| Agastache pallidiflora subsp. neomexicana (Briq.) Lint & Epling, 1945 |
| Agastache palmeri (B.L. Rob.) Standl., 1937 |
| Agastache palmeri var. breviflora (Regel) R.W. Sanders, 1981 |
| Agastache palmeri var. leonensis R.W. Sanders, 1981 |
| Agastache pringlei (Briq.) Lint & Epling, 1945 |
| Agastache sandersiana J.G. González, 2017 |
| Agastache wrightii (Greenm.) Wooton & Standl., 1913 |
| Ajuga L., 1753 |
| Ajuga reptans L., 1753 |
| Ajugoideae Luerss., 1882 |
| Albolanatae (Epling) Epling, 1939 |
| Amasonia L. f., 1782 |
| Amasonia integerrima Spreng., 1825 |
| Angulatae (Epling) Epling, 1939 |
| Asterohyptis Epling, 1932 |
| Asterohyptis mociniana (Benth.) Epling, 1932 |
| Asterohyptis nayarana B.L. Turner, 2011 |
| Asterohyptis seemannii (A. Gray) Epling, 1932 |