Bidens micrantha Gaudich. var. caduca (Sherff) Sherff, Amer. J. Bot. 22: 705. 1935.
Flora of the Hawaiian Islands --Basionym Type Information Bidens sandvicensis Less. var. caduca Sherff, Bot. Gaz. (Crawfordsville) 85: 7 1928.
Moloka`i: s.l.. 1851- 1871. W. Hillebrand s.n..
Holotype
[B].
Note: Holotype presumably destroyed. Photo of holotype, negative no. 49756 (F) seen. Holotype was only known collection.