Cyanea gayana Rock , Indig. trees Haw. Isl. 510. 1913.
Type information:
Lectotype [BISH]. J. F. Rock 2463. 10 March 1909. Kaua`i: [mts. back of Waimea, woods of] Kaholuamanu.4000ft.
Lectotypified in Rock. Monogr. Stud. Haw. Lobelioid. 224. 1919.
=Cyanea fissa

*Verification: T.G. Lammers.

Cyanea gayana Rock var. duvelii Rock, Occas. Pap. Bernice P. Bishop Mus. 22(5): 50. 1957.
Type information:
Holotype [BISH]. J. F. Rock 25675. 15 February 1956. Kaua`i: Mt. Kahili, on adjoining flat.2500 to 3000ft. Isotype(s) [BISH! [2], K!, L!, NSW!, RSA!, US!, W!].
=Cyanea fissa

*Verification: T.G. Lammers.

Cyanea gayana Rock var. wainihaensis Rock, Occas. Pap. Bernice P. Bishop Mus. 22(5): 56. 1957.
Type information:
Holotype [BISH]. L. H. MacDaniels 866. 24 February 1927. Kaua`i: Wainiha Valley, rain forest, along stream.200m.
=Cyanea fissa

*Verification: T.G. Lammers.