''Canavalia molokaiensis'', commonly known as the Molokai Jack-bean or puakauhi, is a rare

species In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of ...

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. They include all forbs (flowering plants without a woody stem), grasses and grass-like plants, a vast majority of ...

in the legume

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

, Fabaceae, 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 els ...

to the island of

Molokai Molokai , or Molokai (), is the fifth most populated of the eight major islands that make up the Hawaiian Islands archipelago in the middle of the Pacific Ocean. It is 38 by 10 miles (61 by 16 km) at its greatest length and width with a us ...

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 ...

. This and other Hawaiian ''Canavalia'' are known there as ''ʻāwikiwiki''. The plant is a vine with red-purple pealike flowers. It inhabits exposed, steep cliffs in

dry Dry or dryness most often refers to: * Lack of rainfall, which may refer to ** Arid regions ** Drought * Dry or dry area, relating to legal prohibition of selling, serving, or imbibing alcoholic beverages * Dry humor, deadpan * Dryness (medica ...

and mesic forests that are dominated by 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, ...

'') and aalii ('' Dodonaea viscosa'') at elevations of . Associated plants include āhinahina ('' Artemisia'' spp.), akoko (''

Euphorbia ''Euphorbia'' is a very large and diverse genus of flowering plants, commonly called spurge, in the family Euphorbiaceae. "Euphorbia" is sometimes used in ordinary English to collectively refer to all members of Euphorbiaceae (in deference to t ...

'' spp.), pilo ('' Coprosma'' spp.), pūkiawe (''

Styphelia ''Styphelia'' is a genus of shrubs in the family Ericaceae, native from Mainland Southeast Asia, Indo-China through the Pacific to Australia. Most have minute or small leaves with a sharp tip, single, tube-shaped flowers arranged in leaf wikt:a ...

tameiameiae''), and ākia (''

Wikstroemia ''Wikstroemia'' is a genus of 55-70 species of flowering shrubs and small trees in the mezereon family, Thymelaeaceae. Hawaiian species are known by the common name ‘ākia. Medicinal uses ''Wikstroemia indica'' () is one of the 50 fundamen ...

'' spp.). This rare plant is threatened by

habitat destruction 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 ...

, mainly due to introduced grazing mammals. It is limited to four populations with a total of 200 to 500 individuals; this is sometimes described as one badly fragmented population. Other threats include introduced plant species.The Nature Conservancy
/ref> This has been a federally listed endangered species of the United States since 1992.

References

External links

USDA Plants Profile
{{Taxonbar, from=Q5031226 molokaiensis Endemic flora of Hawaii Biota of Molokai Taxonomy articles created by Polbot