Zanthoxylum kauaenseA.Gray

Kauai Prickly-ashKauai pricklyash

WFO wfo-0001132906 Accepted WFO 2026-06 5 photographs CC BY

Plate 1 figs. a–e · 1 observation

This species has been photographed under an open licence only 1 time, so some figures below are different views of the same plant, taken on the same day, rather than different individuals. They are usually different parts of it: the leaf, the flower, the bark.

Zanthoxylum kauaense, photographed by Eric Knight
fig. a Eric Knight, CC BY 4.0 / 2019-10-28 / obs. 55559944
Zanthoxylum kauaense, photographed by Eric Knight
fig. b Eric Knight, CC BY 4.0 / obs. 55559994
Zanthoxylum kauaense, photographed by Eric Knight
fig. c Eric Knight, CC BY 4.0 / obs. 55560012
Zanthoxylum kauaense, photographed by Eric Knight
fig. d Eric Knight, CC BY 4.0 / obs. 55560038
Zanthoxylum kauaense, photographed by Eric Knight
fig. e Eric Knight, CC BY 4.0 / obs. 55559969

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Native range 1 botanical country

Regions where Zanthoxylum kauaense is native: Hawaii Hawaii
Native distribution of Zanthoxylum kauaense, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows.
RegionTDWG codeContinent
Hawaii HAW PACIFIC

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Also published as 20 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Fagara glandulosa Engl.
  • Fagara kauaensis (A.Gray) Engl.
  • Fagara mauiensis (H.Mann) Engl.
  • Fagara multiflora Engl.
  • Fagara multifoliolata O.Deg. & Skottsb.
  • Fagara semiarticulata (H.St.John & Hosaka ex O.Deg.) O.Deg.
  • Fagara skottsbergii O.Deg. & I.Deg.
  • Zanthoxylum glandulosum Hillebr.
  • Zanthoxylum hillebrandii P.G.Waterman
  • Zanthoxylum hillebrandii var. hiloense (Sherff) H.St.John
  • Zanthoxylum kauaense var. kohalanum (Sherff) H.St.John
  • Zanthoxylum kauaense var. tenuifolium (O.Deg. & Sherff) H.St.John
  • Zanthoxylum maviense H.Mann
  • Zanthoxylum maviense var. cranwelliae (Skottsb.) H.St.John
  • Zanthoxylum maviense var. kaalanum (Sherff) H.St.John
  • Zanthoxylum maviense var. lanaiense (Sherff) H.St.John
  • Zanthoxylum maviense var. maunahuiense (Sherff) H.St.John
  • Zanthoxylum molokaiense B.C.Stone
  • Zanthoxylum semiarticulatum H.St.John & Hosaka ex O.Deg.
  • Zanthoxylum skottsbergii (O.Deg. & I.Deg.) H.St.John

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.