Zanthoxylum maviense H. Mann f. petiolulatum Rock, Indig. trees Haw. Isl. 207. 1913.
Type information:
Holotype [BISH]. J. F. Rock 10203. July 1911. Hawai`i: Kilauea, Kipukapuaulu. Isotype(s) [A].

Note: As "Xanthoxylum mauiense." Rock cited no specimens for this taxon, but the BISH specimen is labeled "type" in his handwriting. RKS examined the specimen at BISH.

=Zanthoxylum kauaense
Note: As "Xanthoxylum mauiense." Rock cited no specimens for this taxon, but the BISH specimen is labeled "type" in his handwriting. RKS examined the specimen at BISH.

*Verification: R.K. Shannon, W.L. Wagner.