Bidens degeneri Sherff , Bot. Gaz. (Crawfordsville) 85: 3. 1928. Flora of the Hawaiian Islands --Basionym
Type Information
Campylotheca dichotoma Hillebr. , Fl. Hawaiian Isl. 212 1888.
Maui: West Maui, mountains, near Waikapu. H. Mann and W.T. Brigham 450.
Syntype [BISH].

Note: Hillebrand cited "Maui! collected above Maalaea or on Haleakala" (no material found at BISH). He also cited Mann and Brigham 450, but it's not clear whether that collection should be considered a syntype. Apparently there is a sheet of Mann & Brigham 450 at GH also.

=Bidens micrantha subsp. micrantha
*Verification: R.K. Shannon, W.L. Wagner.
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Note: Nom. nov. Replaces Bidens dichotoma (Hillebr.) Sherff (1920), nom. illegit.

*Verification: R.K. Shannon, W.L. Wagner.

Bidens degeneri Sherff var. apioides Sherff, Bot. Gaz. (Crawfordsville) 85: 3. 1928.
Type information:
Holotype [F]. O. Degener and H. Wiebke 2179b. 23 July 1927. Maui: N of Pohakea Gulch near Wailuku, on arid, windswept ridge. Isotype(s) [BISH!, NY [mfc!]].

Note: The "b" was added to the collector number by Sherff. Publication indicates an isotype at HAW; NY sheet has note typed on specimen label that it is the sheet cited as being at HAW. BISH sheet is ex herb. Otto Degener.

=Bidens micrantha subsp. micrantha
Note: The "b" was added to the collector number by Sherff. Publication indicates an isotype at HAW; NY sheet has note typed on specimen label that it is the sheet cited as being at HAW. BISH sheet is ex herb. Otto Degener.

*Verification: R.K. Shannon.