Zanthoxylum hillebrandii P.G. Waterman , Taxon 24: 365. 1975.
Type information:
?type [?]. W. Hillebrand s.n.. 1851- 1871. Maui: West Maui, Lahainaluna gulch. Isotype(s) [BISH].

Note: Fragmentary; only one leaf. No fertile collections of this are known. (dubious species)

=Zanthoxylum kauaense
Note: Fragmentary; only one leaf. No fertile collections of this are known. (dubious species)

*Verification: None.

Zanthoxylum hillebrandii P.G. Waterman var. hiloense (Sherff) H. St. John, Rhodora 78: 73. 1976. Flora of the Hawaiian Islands --Basionym
Type Information
Fagara glandulosa (Hillebr.) Engl. var. hiloensis Sherff, Amer. J. Bot. 45: 462 1958.
Hawai`i: woods of Hilo. W. Hillebrand s.n..
Holotype [B].

Note: Holotype presumably destroyed.

=Zanthoxylum kauaense
*Verification: None.
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*Verification: D.M. Mix.