''Hibiscadelphus hualalaiensis'' (Hualalai hau kuahiwi) is a species of

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...

in the mallow family,

Malvaceae Malvaceae, or the mallows, is a family of flowering plants estimated to contain 244 genera with 4225 known species. Well-known members of economic importance include okra, cotton, cacao and durian. There are also some genera containing familiar ...

, that is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to the Big Island of

Hawaii Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only stat ...

. The last known plant died in 1992, making it most likely

extinct in the wild A species that is extinct in the wild (EW) is one that has been categorized by the International Union for Conservation of Nature as known only by living members kept in captivity or as a naturalized population outside its historic range due ...

; any remaining plants are threatened by

habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby ...

. It inhabits dry and mixed mesic forests on the slopes of

Hualālai Hualālai (pronounced in Hawaiian) is an active volcano on the island of Hawaii in the Hawaiian Islands. It is the westernmost, third-youngest and the third-most active of the five volcanoes that form the island of Hawaii, following Kīlauea a ...

at elevations of . Associated plants include ōhia lehua (''

Metrosideros polymorpha ''Metrosideros polymorpha'', the ''ōhia lehua'', is a species of flowering evergreen tree in the myrtle family, Myrtaceae, that is endemic to the six largest islands of Hawaii. It is a highly variable tree, being tall in favorable situations, ...

''), lama (''

Diospyros sandwicensis ''Diospyros sandwicensis'' is a species of flowering tree in the ebony family, Ebenaceae, that is endemic to Hawaii. It belongs to the same genus as both persimmons and ebony. Its common name, ''lama'', also means enlightenment in Hawaiian. ...

''), māmane (''

Sophora chrysophylla ''Sophora chrysophylla'', known as ''māmane'' in Hawaiian, is a species of flowering plant in the pea and bean family, Fabaceae, that is endemic to Hawaii. It is highly polymorphic, growing as a shrub or tree, and able to reach a height of ...

''), naio (''

Myoporum sandwicense ''Myoporum sandwicense'', commonly known as ''naio'', bastard sandalwood or false sandalwood is a species of flowering plant in the figwort family, Scrophulariaceae. It is a tree or shrub highly variable in its form, the size and shape of its l ...

''), ālaa (''

Pouteria ''Pouteria'' is a genus of flowering trees in the gutta-percha family, Sapotaceae. The genus is widespread throughout the tropical regions of the world. It includes the canistel ('' P. campechiana''), the mamey sapote ('' P. sapota''), and the lu ...

sandwicensis''), pāpala (''

Charpentiera ''Charpentiera'' is a flowering plant genus in the family Amaranthaceae. It consists of five species endemic to Hawaii, where they are known as ''pāpala'', and one species found only on the island of Tubuai in the Austral Islands. All species a ...

'' spp.), aiea (''

Nothocestrum ''Nothocestrum'' is a genus of flowering plants in the nightshade family, Solanaceae. It contains four species of large shrubs or small trees that are endemic to Hawaii, where they are known as ''aiea''. Species * '' Nothocestrum breviflorum'' ...

'' spp.), poolā (''

Claoxylon ''Claoxylon'' is a flowering plant genus in the spurge family, Euphorbiaceae, comprising dioecious subshrubs to small trees. It was first described as a genus in 1824. The genus is distributed in paleotropical areas: Madagascar through South and ...

sandwicense''), and Kikuyu Grass (''

Pennisetum clandestinum The tropical grass species ''Cenchrus clandestinus'' (previously Pennisetum clandestinum) is known by several common names, most often kikuyu grass, as it is native to the highland regions of East Africa that is home to the Kikuyu people. Becau ...

''). ''H. hualalaiensis'' is a small

tree In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, including only woody plants with secondary growth, plants that are ...

, reaching a height of and trunk diameter of .

References

hualalaiensis Endemic flora of Hawaii Biota of Hawaii (island) Trees of Hawaii Plants extinct in the wild Taxonomy articles created by Polbot {{Hibisceae-stub