Dubautia imbricata H. St. John & G.D. Carr , Bull. Torrey Bot. Club 108: 198. 1981.
Type information:
Holotype [BISH]. G. Carr , S. Perlman and D. Kyhos 1130. 24 September 1979. Kaua`i: Wahiawa Mts., on very steep exposed bank just above an unnamed left (Hanapepe) fork of Wahiawa Stream.710m. Isotype(s) [BISH!, F!, HAW!, MO!, NY!, US!].
=Dubautia imbricata subsp. imbricata

*Verification: R.K. Shannon.

Dubautia imbricata H. St. John & G.D. Carr subsp. acronaea G.D. Carr, Allertonia 4: 76. 1985.
Type information:
Holotype [GH]. J. F. Rock 5027. 23 September 1909. Kaua`i: summit of Wai`ale`ale.

Note: pro parte.

=Dubautia imbricata subsp. acronaea
Note: pro parte.

*Verification: None.