| Bidens bigelovii var. pueblensis Sherff, 1929 |
| Bidens bipinnata (Cav.) Baill., 1882 |
| Bidens boquetiensis Roseman, 1990 |
| Bidens brandegeei Sherff, 1917 |
| Bidens cabopulmensis León de la Luz & B.L. Turner, 2013 |
| Bidens carpodonta Sherff, 1917 |
| Bidens chiapensis Brandegee, 1914 |
| Bidens chiapensis var. chiapensis Brandegee, 1914 |
| Bidens chiapensis var. feddemana (Sherff) Melchert, 1990 |
| Bidens chrysanthemifolia (Kunth) Sherff, 1916 |
| Bidens clavata R.E. Ballard, 1988 |
| Bidens colimana Melchert, 1990 |
| Bidens cordylocarpa (A. Gray) D.J. Crawford, 1971 |
| Bidens coreocarpoides Sherff, 1935 |
| Bidens coreopsidis DC., 1836 |
| Bidens coreopsidis var. procumbens Donn. Sm., 1906 |
| Bidens cornuta Sherff, 1917 |
| Bidens crocata Cav., 1791 |
| Bidens cronquistii (Sherff) Melchert, 1990 |
| Bidens cynapiifolia Kunth, 1818 |