Hibiscus arnottianus A.Gray

국표에 없다.

Hibiscus arnottianus is a shrub or small tree generally 8 meters in height, though a few individuals will grow to 10 meters tall. The leaves are mostly oval with a smooth upper surface and a lower surface with many to no hairs. Leaf margins or edges are smooth or have spreading pointed teeth near the leaf tip. The leaves are 4 to 10 centimeters long and often have red veins and stems. The faintly fragrant flowers have white petals 5 to 13 cm long with the tube-like green calyx being 2 to 3 centimeters long. Anthers are arranged along the upper third of the pinkish to dark red staminal column 8 to 19 cm long. Older flowers may be slightly pink to pale pink. In cultivation, Hibiscus arnottianus blooms almost continuously.
(Wagner,W.L.,Herbst,D.R.,Sohmer,S.H. 1999. Manual of Flowering Plants of Hawai'i.; Criley, R. 1998. 1999; Koob, G. 1998; Rauch. 1997)

National Tropical Botanical Garden | Hibiscus arnottianus - Plant Detail - Tropical Plants Database (ntbg.org)

Hibiscus arnottianus A.Gray – kokiʻo keʻokeʻo ("kokiʻo that is white like the shine of silver") is an endemic species of hibiscus with white flowers. Three subspecies are recognized: H. arnottianus ssp. arnottianus found in the Waianae Range of western Oahu; H. a. ssp. immaculatus which is very rare (listed as endangered) on Molokai; and H. a. ssp. punaluuensis from the Koʻolau Range on Oahu. Perhaps only a dozen plants of H. a. ssp. immaculatus exist in nature in mesic and wet forests. This species is closely related to H. waimeae, and the two are among the very few members of the genus with fragrant flowers. It is sometimes planted as an ornamental or crossed with H. rosa-sinensis. In the Hawaiian language, the white hibiscus is known as the pua aloalo.

Hawaiian hibiscus - Wikipedia

Hibiscus arnottianus subsp. immaculatus (5112731759) - Hibiscus arnottianus - Wikidata