Bidens sandvicensis Less. , Linnaea 6: 508. 1831.
Type information:
Holotype [B]. L. C. A. von Chamisso s.n.. 1816. O`ahu: s.l..

Note: Holotype presumably destroyed. Neotype to be designated.

=Bidens sandvicensis subsp. sandvicensis
Note: Holotype presumably destroyed. Neotype to be designated.

*Verification: None.

Bidens sandvicensis Less. f. compositior O. Deg. & Sherff, in Sherff, Bot. Gaz. (Crawfordsville) 88: 296. 1929.
Type information:
Holotype [F]. O. Degener and K. Nitta 3411a. 13 January 1929. O`ahu: east rim of Manoa Valley, 1 mi mauka of the University.450m.
=Bidens sandvicensis subsp. sandvicensis

*Verification: None.

Bidens sandvicensis Less. subsp. confusa Nagata & Ganders, Lyonia 2: 2. 1983.
Type information:
Holotype [BISH]. K. Nagata 2473. 5 June 1982. Kaua`i: Waimea Dist., Koke`e, along Waimea Canyon Road near Canyon Lookout.1005m.
=Bidens sandvicensis subsp. confusa

*Verification: None.

Bidens sandvicensis Less. var. antrorsa O. Deg. & Sherff, in Sherff, Bot. Leafl. 3: 8. 1951.
Type information:
Holotype [F]. O. Degener and W. Hatheway 21183. 19 December 1950. O`ahu: Wailupe Valley.610m.
=Bidens sandvicensis subsp. sandvicensis

*Verification: None.

Bidens sandvicensis Less. var. caduca Sherff, Bot. Gaz. (Crawfordsville) 85: 7. 1928.
Type information:
Holotype [B]. W. Hillebrand s.n.. 1851- 1871. Moloka`i: s.l..

Note: Holotype presumably destroyed. Photo of holotype, negative no. 49756 (F) seen. Holotype was only known collection.

=Bidens micrantha subsp. micrantha
Note: Holotype presumably destroyed. Photo of holotype, negative no. 49756 (F) seen. Holotype was only known collection.

*Verification: None.

Bidens sandvicensis Less. var. heterophylla A. Gray, Proc. Amer. Acad. Arts 5: 128. 1861.
Type information:
Holotype [GH]. J. Rémy 281. 1851 1855. Hawai`i: s.l..
=Bidens micrantha subsp. ctenophylla

*Verification: None.

Bidens sandvicensis Less. var. imminuta O. Deg. & Sherff, in Sherff Bot. Gaz. (Crawfordsville) 93: 217. 1932.
Type information:
Holotype [F]. O. Degener , K.K. Park and K. Kwon 4092. 14 November 1931. O`ahu: narrow middle Wai`alae Ridge on grassy, shrubby plateau.1000ft. Isotype(s) [B [PD], BISH! [2], BM, F, G-BOIS, GH, K, MASS!, MO! [2], P, US! [2]].

Note: Check Kwon's initial; published as K. Kwon, but label (in Sherff's handwriting) has M. Kwon. Labels in Degener's hand have no initial. Both BISH sheets ex herb. Degener.

=Bidens sandvicensis subsp. sandvicensis
Note: Check Kwon's initial; published as K. Kwon, but label (in Sherff's handwriting) has M. Kwon. Labels in Degener's hand have no initial. Both BISH sheets ex herb. Degener.

*Verification: R.K. Shannon.

Bidens sandvicensis Less. var. leiocarpa O. Deg. & Sherff, in Sherff, Brittonia 12: 175. 1960.
Type information:
Holotype [F]. O. Degener , I. Degener and W. Fleming 25108. 27 March 1959. Maui: West Maui, Honokawai Ditch Trail, sunny ledges.1500ft. Isotype(s) [BISH!, F, MASS!, MO!, NY [mfc!], US].
=Bidens micrantha subsp. micrantha

*Verification: R.K. Shannon.

Bidens sandvicensis Less. var. ovatifolia A. Gray, Proc. Amer. Acad. Arts 5: 128. 1861.
Type information:
Holotype [US]. U. S. Expl. Exped. s.n.. 1840. O`ahu: s.l..
=Bidens macrocarpa

*Verification: None.

Bidens sandvicensis Less. var. setosa (Sherff) Sherff, Bot. Gaz. (Crawfordsville) 85: 6. 1928. Flora of the Hawaiian Islands --Basionym
Type Information
Bidens setosa Sherff , Bot. Gaz. (Crawfordsville) 70: 103 1920.
Kaua`i: Waimea Drainage Basin, west side. 3-18 July-August 1917. C.N. Forbes 811.K.
Holotype [BISH]. Isotype(s) [BISH! [2], F].

Note: The specimen labels give the date as "July 3 to August 18," but Forbes's field book gives the date as July 7 to August 18.

=Bidens sandvicensis subsp. sandvicensis
*Verification: R.K. Shannon.
---------------------


*Verification: D.M. Mix.

Bidens sandvicensis Less. var. waimeana (Sherff) Hochr., Candollea 5: 323. 1934. Flora of the Hawaiian Islands --Basionym
Type Information
Bidens waimeana Sherff , Bot. Gaz. (Crawfordsville) 76: 164 1923.
Kaua`i: on Kaholuamanoa [Kaholuamanu] above Waimea. 1-8 October 1895. A.A. Heller 2848.
Holotype [MO]. Isotype(s) [BM, F, GH, K, LE, MIN!, NY [mfc!, photo BISH!], UC, US!].

Note: Sherff did not annotate the holotype, but he did write "=Type!" on the photos of the holotype. Heller did not cite this collection, and we have no evidence that any collections with this number were made on other dates.

=Bidens sandvicensis subsp. sandvicensis
*Verification: Wagner, W.L. & R.K. Shannon. 1999. Brittonia 51:422-438.
---------------------


*Verification: D.M. Mix.