Hibiscus kokio Hillebr. , Fl. Hawaiian Islands 48. 1888.
Type information:
Lectotype [B]. W. Hillebrand s.n.. 1851- 1871. Moloka`i: Halawa Valley.
Lectotypified in O. Degener and I. De. Phytologia 35: 465. 1977. Isolectotype(s) [BISH].

Note: BISH sheet not located by Wagner et al., 1989.

=Hibiscus kokio subsp. kokio
Note: BISH sheet not located by Wagner et al., 1989.

*Verification: Wagner, W.L., D.R. Herbst, & S.H. Sohmer. 1989. Man. Fl. Pl. Hawai`i. 988pp..

Hibiscus kokio Hillebr. subsp. saintjohnianus (M.J. Roe) D.M. Bates, in Wagner, Herbst & Sohmer, Bishop Mus. Occas. Pap. 29: 105. 1989. Flora of the Hawaiian Islands --Basionym
Type Information
Hibiscus saintjohnianus M. J. Roe , Pacific Sci. 15: 18 1961.
Kaua`i: Hanalei Dist., headland W of Hanakapiai, Napali Coast, on sharply precipitous slopes. 700 ft. 22 December 1956. H. St. John 25989.
Holotype [BISH].
=Hibiscus kokio subsp. saintjohnianus

*Verification: Wagner, W.L., D.R. Herbst, & S.H. Sohmer. 1989. Man. Fl. Pl. Hawai`i. 988pp..
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*Verification: Wagner, W.L., D.R. Herbst, & S.H. Sohmer. 1989. Man. Fl. Pl. Hawai`i. 988pp..

Hibiscus kokio Hillebr. var. pekeloi O. Deg. & I. Deg., Phytologia 35: 465. 1977.
Type information:
Holotype [NY]. O. Degener 18222. 3 August 1928. Moloka`i: Wailau Valley, rainy, shrubby, coastal ledges. Isotype(s) [BISH!, MASS!].
=Hibiscus kokio subsp. kokio

*Verification: Wagner, W.L., D.R. Herbst, & S.H. Sohmer. 1989. Man. Fl. Pl. Hawai`i. 988pp..

Hibiscus kokio Hillebr. var. pukoonis Caum, Occas. Pap. Bernice P. Bishop Mus. 9(5): 7. 1930.
Type information:
Holotype [BISH]. E.L. Caum 155. February 1921. Moloka`i: bottom of Puko`o Valley, just inside the native forest.

Note: Holotype not located by Wagner et al., 1989. There are two sheets at BISH labeled Caum 155 in pencil, collected in 1930. They are from plants cultivated in Caum's garden from cuttings from Caum 155.

=Hibiscus kokio subsp. kokio
Note: Holotype not located by Wagner et al., 1989. There are two sheets at BISH labeled Caum 155 in pencil, collected in 1930. They are from plants cultivated in Caum's garden from cuttings from Caum 155.

*Verification: Wagner, W.L., D.R. Herbst, & S.H. Sohmer. 1989. Man. Fl. Pl. Hawai`i. 988pp..