Zanthoxylum dipetalum

Zanthoxylum dipetalum
Conservation status
Imperiled (NatureServe)
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Rosids
Order:	Sapindales
Family:	Rutaceae
Genus:	Zanthoxylum
Species:	Z. dipetalum
Binomial name
*Zanthoxylum dipetalum* H.Mann

Zanthoxylum dipetalum is a rare species of tree in the citrus family known by the common name kawa'u. It is endemic to Hawaii, where it grows in forests on 3 or 4 of the islands.^[1]

There are two varieties.^[1]

Z. d. var. dipetalum is present on Kauai, in the mountains of Oahu, on Hawaii in Hawaii Volcanoes National Park, and possibly on Molokai.
Z. d. var. tomentosum is known from fewer than 30 individuals on Hualālai volcano on Hawaii.^[1]^[2]^[3] This variety is a federally listed endangered species of the United States.

The roots of Z. dipetalum have been found to contain several chemical compounds, including canthin-6-one, chelerythrine, nitidine, tembetarine, avicennol, xanthoxyletin, lupeol, hesperidin, sitosterol, and magnoflorine.^[4]

References

^ ^a ^b ^c Zanthoxylum dipetalum. The Nature Conservancy.
^ World Conservation Monitoring Centre 1998. Zanthoxylum dipetalum var. tomentosum. 2011 IUCN Red List of Threatened Species. Downloaded on 26 August 2011.
^ Zanthoxylum dipetalum. Center for Plant Conservation.
^ Fish, F., et al. (1975). Alkaloids, coumarins, triterpenes and a flavanone from the root of Zanthoxylum dipetalum. Phytochemistry 14(9) 2073.

External links

USDA Plants Profile