Hesperomannia arbuscula Hillebr. , Fl. Hawaiian Isl. 232. 1888.
Type information:
Holotype [B]. E. Bishop s.n.. Maui: West Maui, above Lahaina.1200ft. Isotype(s) [BISH!, MEL [photo BISH!]].

Note: BISH isotype is ex herb. Lydgate. Lectotype: GH, Isolectotype: BISH

=Hesperomannia arborescens
Note: BISH isotype is ex herb. Lydgate. Lectotype: GH, Isolectotype: BISH

*Verification: R.K. Shannon.

Hesperomannia arbuscula Hillebr. subsp. oahuensis (Hillebr.) Carlquist, . . Flora of the Hawaiian Islands --Basionym
Type Information
Hesperomannia arborescens A. Gray var. oahuensis Hillebr., Fl. Hawaiian Isl. 232 1888.
O`ahu: Wai'anae Range, Makaleka. s.d.. J. M. Lydgate s.n..
Syntype [B].

Note: BISH sheet is fragment of B sheet [PD]. Additional syntype: O`ahu, Waianae range, Puakea, Wawra. See discussion by St. John, 1978, on effective lectotypification by Degener.

=Hesperomannia oahuensis
*Verification: R.K. Shannon.
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*Verification: D.M. Mix.

Hesperomannia arbuscula Hillebr. var. pearsallii H. St. John, Phytologia 40: 242. 1978.
Type information:
Holotype [BISH]. G.A. Pearsall 500. 19 May 1960. O`ahu: Wai`anae Mts., Pu`u Kaua-Kanehoa Peak, on side ridge 100 yds. below main ridge, above Kunia Camp.2950ft.
=Hesperomannia oahuensis

*Verification: R.K. Shannon.