''Santalum haleakalae'', known as Haleakala sandalwood or ''Iliahi'' in Hawaiian, is a species of flowering

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 ...

in the sandalwood family, 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 islands of Maui,

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, and

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 ...

in the

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, part of the

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. It grows in subalpine shrublands at elevations of , especially on the slopes of

Haleakalā Haleakalā (; Hawaiian: ), or the East Maui Volcano, is a massive shield volcano that forms more than 75% of the Hawaiian Island of Maui. The western 25% of the island is formed by another volcano, Mauna Kahalawai, also referred to as the Wes ...

Description

This is a shrub or small tree with green, ovate leaves that are often glaucous and tinged purple, especially in ''var. halekalae''. The flowers are cream-colored to red in bud and cream to white when open, arranged in tight compound cymes. The fruit are reddish to black

drupes In botany, a drupe (or stone fruit) is an indehiscent fruit in which an outer fleshy part ( exocarp, or skin, and mesocarp, or flesh) surrounds a single shell (the ''pit'', ''stone'', or '' pyrena'') of hardened endocarp with a seed (''kernel ...

Range

''Santalum haleakalae'' var. ''haleakalae'' occurs only on the slopes of

on Maui. ''Santalum haleakalae'' var. ''lanaiense'' occurs on the islands of

, and Maui.

Habitat

''Santalum haleakalae'' var. ''haleakalae'' occupies subalpine and montane mesic forests, while ''Santalum haleakalae'' var. ''lanaiense'' occupies wet shrublands.

Ecology

Like most sandalwoods, ''Santalum haleakalae'' is a hemiparasite, deriving some of its nutrition from the roots of surrounding plants, and ''Santalum haleakalae'' var. ''lanaiense'' is thought to use koa (''Acacia koa'') as a host (among other native trees). Their flowers provide nectar for native Hawaiian honeycreepers like the Maui ʻamakihi.

Human Use

Native Hawaiians used (including other native members of this genus) for a variety of medicinal purposes, perfuming kapa, and making musical instruments. After learning of the lucrative global market in sandalwood in the late 18th century, Hawaiian nobles forced people of lower castes to harvest the wood of this and related trees, many of whom suffered or died in the process, resulting in famine due to abandoning food crops. Hawaii was so well known in China for its sandalwood that people in the

Macau Macau or Macao (; ; ; ), officially the Macao Special Administrative Region of the People's Republic of China (MSAR), is a city and special administrative region of China in the western Pearl River Delta by the South China Sea. With a pop ...

area referred to it as "Tan Heung Shan," or "the Sandalwood Mountains." The trade in Hawaiian sandalwood ended around the middle of the 19th century, and while many populations have recovered, large, old trees remain difficult to find.

Etymology

The specific and varietal epithet ''haleakalae'' comes from Haleakalā, the volcano to which that variety is endemic. The varietal epithet ''lanaiense'' comes from the island of Lanai, one of the islands where that variety occurs.

Taxonomy

Research in 2010 determined that the '' Santalum freycinetianum'' was

polyphyletic A polyphyletic group is an assemblage of organisms or other evolving elements that is of mixed evolutionary origin. The term is often applied to groups that share similar features known as homoplasies, which are explained as a result of conver ...

and the variety ''Santalum freycinetianum'' var. ''lanaiense'' was most closely related to ''S. haleakalae''. The authors combined them as two varieties of the same species, ''Santalum haleakalae'' var. ''haleakalae'' for the plants on

and ''Santalum haleakalae'' var. ''lanaiense'' for the plants elsewhere on Maui as well as on

and

References

External links

* * * * {{Taxonbar, from=Q5464147 haleakalae Endemic flora of Hawaii Biota of Maui Trees of Hawaii Plants described in 1888 Taxonomy articles created by Polbot Taxobox binomials not recognized by IUCN