| Asteraceae | |
Ambrosia artemisiifolia fo. artemisiifolia
| | | |
| Asteraceae | |
Ambrosia artemisiifolia var. artemisiifolia
| | | |
| Asteraceae | |
Ambrosia artemisiifolia var. diversifolia
| Piper | Contr. U.S. Natl. Herb. 11: 551 | 1906 |
| Asteraceae | |
Ambrosia artemisiifolia var. elatior
| (L.) Descourt. | Fl. Méd. Antilles 1: 239 | 1821 |
| Asteraceae | |
Ambrosia artemisiifolia var. jamaicensis
| Griseb. | Fl. Brit. W. I. 370 | 1864 [1861] |
| Asteraceae | |
Ambrosia artemisiifolia var. paniculata
| (Michx.) Blank. | Rep. (Annual) Missouri Bot. Gard. 18: 173 | 1907 |
| Asteraceae | |
Ambrosia artemisiifolia var. trinitensis
| Griseb. | Fl. Brit. W. I. 370 | 1864 [1861] |
| Asteraceae | |
Ambrosia artemisiifolia fo. villosa
| Fernald & Griscom | Rhodora 37(437): 185 | 1935 |