Bidens gracilis Nutt. , Trans. Amer. Philos. Soc. II, 7: 368. 1841.
Type information:
Holotype [BM]. T. Nuttall s.n.. s.d.. O`ahu: s.l..

Note: Not Bidens gracilis Torr. (Ann. Lyc. N.Y. 2: 215. 1828.).

=Bidens asymmetrica
Note: Not Bidens gracilis Torr. (Ann. Lyc. N.Y. 2: 215. 1828.).

*Verification: None.