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..