The genus Kokia only contains 4 species, each of which is endemic to a single island in Hawaii, and one of which (Kokia lanceolata) is extinct.
Kokia kauaiensis is only found on the west side of Kaua’i in Pa’aiki, Ku’ia, Mahanaloa, Kalalau and Koai’e valleys. Altogether there are less than 100 individuals in six populations. Kokia kauaiensis is a federally listed endangered species.
(IUCN 2008 Red List – kokia kauaiensis. Website accessed on 10/28/08. http://www.iucnredlist.org/details/30934)
(Wagner, W. L., Herbst, D. R., and S. H. Sohmer. 1999. Manual of the Flowering Plants of Hawai’i. Revised Edition. Volume 1. Bishop Museum Special Publication 97. University of Hawai‘i Press, Bishop Museum Press, Honolulu, Hawai’i.)