$modus 0:
$modus 1:
Bidens leptocephala
Bidens leptocephala Sherff [Accepted]
Compositae
Bidens leptocephala Sherff
D.S. Correll, H.B. Correll, Aquatic Wetl. Pl. SW U.S.: , fig. 772 a (1972) [V. Frazier]