Hibiscadelphus wilderianus Rock, 1911

Maui hau kuahiwi



Taxonomy & Nomenclature



Conservation Status

Extinct (Humphreys et al., 2019)

Last record: 1910 (1912 or before?)

IUCN RedList status: Extinct



southern slopes of Mount Haleakalā, Maui, Hawaii


Biology & Ecology










Original scientific description:

Radlkoffer, L. and Rock, J. F. (1911). New and noteworthy Hawaiian plants. Hawaiian Board of Agriculture and Forestry Botanical Bull 1: 1-15.


Other references:

Champion, Solomon J. (2020). Biogeography and phylogenetics of the Hawaiian endemic Hibiscadelphus, hau kuahiwi (Malvaceae). MSc thesis, University of Hawai'i.

Day, David. (1981). The Doomsday Book of Animals, Ebury Press, London.

Humphreys, Aelys M., Govaerts, Rafaël, Ficinski, Sarah Z., Lughadha, Eimear Nic and Vorontsova, Maria S. (2019). Global dataset shows geography and life form predict modern plant extinction and rediscovery. Nature Ecology & Evolution 3: 1043-1047. [Abstract] [Supplementary Dataset 1]

Lucas, G.L.l. and Synge, H. (compilers). 1978. The IUCN Plant Red Data Book. IUCN, Morges, Switzerland.

Oldfield, Sara, Lusty, Charlotte and MacKinven, Amy (compilers). (1998). The World List of Threatened Trees. Cambridge, U.K.: World Conservation Press. 650 pp.

Wagner, W., Herbst, D. and Sohmer, S. 1990. Manual of the flowering plants of Hawaii. University of Hawaii Press, Bishop Museum Press, Honolulu.

Walter, Kerry S. and Gillett, Harriet J. (eds.). (1998). 1997 IUCN Red List of Threatened Plants. Compiled by the World Conservation Monitoring Centre. Gland, Switzerland & Cambridge, UK: IUCN – The World Conservation Union. lxiv + 862 pp.

Wood, Kenneth R., Oppenheimer, Hank and Keir, Matthew. (2019). A checklist of endemic Hawaiian vascular plant taxa that are considered possibly extinct in the wild. National Tropical Botanical Garden, Technical Report #314.

World Conservation Monitoring Centre. 1998. Hibiscadelphus wilderianus. The IUCN Red List of Threatened Species 1998: e.T30397A9536660. Downloaded on 18 November 2016.


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