Bidens melanocarpa
| Bidens melanocarpa Wiegand, Bull. Torrey Bot. Club 26: 405. 1899. | | SYNTYPE: FLORIDA: |
Bidens frondosa forma anomala
| Bidens frondosa Linnaeus, forma anomala (Porter ex Fernald) Fernald, Rhodora 40: 352. 1938. | BASIONYM: Bidens frondosa Linnaeus, var. anomala Porter ex Fernald 1903. | |
Bidens frondosa var. anomala
| Bidens frondosa Linnaeus, var. anomala Porter ex Fernald, Rhodora 5: 91. 1903. | | |
Bidens frondosa var. caudata
| Bidens frondosa Linnaeus, var. caudata Sherff, Brittonia 11: 190. 1959. | | TYPE: WEST VIRGINIA: Raleigh Co.: Near Stanaford, 3 Sep 1940, Tosh s.n. (holotype: WVA). |
Bidens frondosa var. pallida
| Bidens frondosa Linnaeus, var. pallida (Wiegand) Wiegand, Rhodora 26: 5. 1924. | BASIONYM: Bidens melanocarpa Wiegand, var. pallida Wiegand 1899. | |
Bidens frondosa var. puberula
| Bidens frondosa Linnaeus, var. puberula Wiegand, Bull. Torrey Bot. Club 26: 408. 1899. | | |
Bidens frondosa var. stenodonta
| Bidens frondosa Linnaeus, var. stenodonta Fernald & H. St. John, Rhodora 17: 22. 1915. | | TYPE: CANADA: Newfoundland: Whitbourne, 8 Aug 1911, Fernald & Wiegand 6375 (holotype: GH). |
Bidens melanocarpa var. pallida
| Bidens melanocarpa Wiegand, var. pallida Wiegand, Bull. Torrey Bot. Club 26: 406. 1899. | | |
Bidens puberula
| Bidens puberula (Wiegand) Rydberg, Fl. Plains N. Amer. 849. 1932. | BASIONYM: Bidens frondosa Linnaeus, var. puberula Wiegand 1899. | |
Bidens vulgata forma puberula
| Bidens vulgata Greene, forma puberula (Wiegand) Fernald, Rhodora 40: 352. 1938. | BASIONYM: Bidens frondosa Linnaeus, var. puberula Wiegand 1899. | |
Bidens vulgata var. puberula
| Bidens vulgata Greene, var. puberula (Wiegand) Greene, Pittonia 4: 250. 1901. | BASIONYM: Bidens frondosa Linnaeus, var. puberula Wiegand 1899. | |