| Asteraceae | |
Bidens cernua var. anomala
| Farw. | Rep. (Annual) Commiss. Parks Boulevards Detroit 11: 91 | 1900 |
| Asteraceae | |
Bidens cernua var. bidens
| (L.) Farw. | Rep. (Annual) Commiss. Parks Boulevards Detroit 11: 91 | 1900 |
| Asteraceae | |
Bidens cernua fo. cernua
| | | |
| Asteraceae | |
Bidens cernua var. cernua
| | | |
| Asteraceae | |
Bidens cernua var. coreopsis
| Pursh | Fl. Amer. Sept. 2: 566 | 1814 [1813] |
| Asteraceae | |
Bidens cernua var. dentata
| (Nutt.) B. Boivin | Naturaliste Canad. 87(2): 28 | 1960 |
| Asteraceae | |
Bidens cernua fo. discoidea
| Briq. & Cavill. | | |
| Asteraceae | |
Bidens cernua var. elata
| Torr. & A. Gray | Fl. N. Amer. 2(2): 352 | 1842 |
| Asteraceae | |
Bidens cernua var. elliptica
| Wiegand | Bull. Torrey Bot. Club 26(8): 417–418 | 1899 |
| Asteraceae | |
Bidens cernua var. integra
| Wiegand | Bull. Torrey Bot. Club 26(8): 418–419 | 1899 |
| Asteraceae | |
Bidens cernua fo. minima
| (Huds.) Larss. | Fl. Wermland 220 | 1859 |
| Asteraceae | |
Bidens cernua subvar. minima
| (Huds.) Coss. & Germ. | Fl. Paris (ed. 2) 2: 488 | 1861 |
| Asteraceae | |
Bidens cernua var. minima
| (Huds.) Pursh | Fl. Amer. Sept. 2: 566 | 1814 [1813] |
| Asteraceae | |
Bidens cernua var. oligodonta
| Fernald & H. St. John | Rhodora 17(193): 25 | 1915 |
| Asteraceae | |
Bidens cernua var. radiata
| DC. | Prodr. 5: 594–595 | 1836 |