| Adenopodia gymnantha Brenan, 1986 |
| Adenopodia oaxacana M. Sousa, 1986 |
| Adenopodia patens (Hook. & Arn.) J.R. Dixon ex Brennan, 1986 |
| Adenopodia polystachya (L.) J.R. Dixon ex Croat, 1978 |
| Adesmia DC., 1825 |
| Adesmia hispidula (Lag.) DC., 1825 |
| Adipera Raf., 1838 |
| Adipera laevigata (Willd.) Britton & Rose ex Britton & P. Wilson, 1924 |
| Adipera ovalifolia (M. Martens & Galeotti) Britton & Rose, 1930 |
| Adipera purpusii (Brandegee) Britton & Rose, 1930 |
| Adipera tomentosa (L. f.) Britton & Rose, 1930 |
| Aeschynomene L., 1753 |
| Aeschynomene acapulcensis Rose, 1899 |
| Aeschynomene americana L., 1753 |
| Aeschynomene americana var. americana L., 1753 |
| Aeschynomene americana var. depila Millsp., 1898 |
| Aeschynomene americana var. flabellata Rudd, 1955 |
| Aeschynomene americana var. glandulosa (Poir.) Rudd, 1955 |
| Aeschynomene americana var. longifolia Micheli, 1895 |
| Aeschynomene americana var. villosa (Poir.) Urb., 1905 |