Zanthoxylum dipetalum var. tomentosum

Zanthoxylum dipetalum var. tomentosum NatureServe Explorer Species Reports — NatureServe Explorer is a source for authoritative conservation information on more than 50,000 plants, animals and ecological communtities of the U.S and Canada. NatureServe Explorer provides in-depth information on rare and endangered species, but includes common plants and animals too. NatureServe Explorer is a product of NatureServe in collaboration with the Natural Heritage Network.

ITIS Reports — ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.

FWS Digital Media Library — The U.S. Fish and Wildlife Service’s National Digital Library is a searchable collection of selected images, historical artifacts, audio clips, publications, and video.Zanthoxylum dipetalum is a rare species of tree in the family Rutaceae and in the same genus as Szechuan pepper. It is known by the Hawaiian names Kāwa’u and Heaʻe and is endemic to the Hawaiian archipelago, where it grows in forests on 3 or 4 of the islands.The first variety, dipetalum, is found on four Hawaiian Islands. The second variety, tomentosum, is rare and found only on the island of Hawai‘i. This variety is distinguished from Zanthoxylum dipetalum var. dipetalum by the hairs on the undersurface of its leaflets.