Hedyotis fluviatilis (C.N. Forbes) Fosberg , Bernice P. Bishop Mus. Bull. 174: 90. 1943. Flora of the Hawaiian Islands --Basionym
Type Information

*Verification: R.K. Shannon.

Hedyotis fluviatilis (C.N. Forbes) Fosberg f. breviflora O. Deg. & Fosberg, in Fosberg, Bernice P. Bishop Mus. Bull. 174: 91. 1943.
Type information:
Holotype [BISH]. O. Degener , K.K. Park and G. Shigeura 11677. 20 October 1935. O`ahu: Ko`olau Range, Sacred Falls.
=possible hybrid

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

Hedyotis fluviatilis (C.N. Forbes) Fosberg f. kamapuaana (O. Deg.) Fosberg, Bernice P. Bishop Mus. Bull. 174: 91. 1943. Flora of the Hawaiian Islands --Basionym
Type Information

*Verification: W.L. Wagner.

Hedyotis fluviatilis (C.N. Forbes) Fosberg var. hathewayi Fosberg, Brittonia 8: 171. 1956.
Type information:
Holotype [NY]. O. Degener , W.H. Hatheway and K. Silva 20859. 27 August 1950. O`ahu: Ko`olau Range, Kawaiiki, forested bank.1400ft. Isotype(s) [BISH! [2], MASS!, US].
=Kadua fluviatilis

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

Hedyotis fluviatilis (C.N. Forbes) Fosberg var. kamapuaana (O. Deg.) Fosberg, Bernice P. Bishop Mus. Bull. 174: 91. 1943. Flora of the Hawaiian Islands --Basionym
Type Information

*Verification: R.K. Shannon.

Hedyotis fluviatilis (C.N. Forbes) Fosberg var. kauaiensis Fosberg, Bernice P. Bishop Mus. Bull. 174: 93. 1943.
Type information:
Holotype [BISH]. C.N. Forbes and H.J. Forbes 460.K. September 1913. Kaua`i: Kalalau Trail, near Hanakapiae [Hanakpiai].
=Kadua fluviatilis

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