Shorea Havilandii
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''Shorea havilandii'' is a tree in the family
Dipterocarpaceae Dipterocarpaceae is a family (biology), family of flowering plants with 22 genera and about 695 known species of mainly lowland tropical forest trees. Their distribution is pantropical, from northern South America to Africa, the Seychelles, India ...
, native to
Borneo Borneo () is the List of islands by area, third-largest island in the world, with an area of , and population of 23,053,723 (2020 national censuses). Situated at the geographic centre of Maritime Southeast Asia, it is one of the Greater Sunda ...
. It is named for the English naturalist George Darby Haviland.


Description

''Shorea havilandii'' grows up to tall, with a trunk diameter of up to . It has
buttresses A buttress is an architectural structure built against or projecting from a wall which serves to support or reinforce the wall. Buttresses are fairly common on more ancient (typically Gothic) buildings, as a means of providing support to act a ...
up to tall. The bark is flaky to cracked. The leathery leaves are elliptic to
ovate Ovate may refer to: * Ovate (egg-shaped) leaves, tepals, or other botanical parts *Ovate, a type of prehistoric stone hand axe * Ovates, one of three ranks of membership in the Welsh Gorsedd * Vates or ovate, a term for ancient Celtic bards ...
and measure up to long. The
inflorescence In botany, an inflorescence is a group or cluster of flowers arranged on a plant's Plant stem, stem that is composed of a main branch or a system of branches. An inflorescence is categorized on the basis of the arrangement of flowers on a mai ...
s measure up to long and bear up to seven cream flowers.


Distribution and habitat

''Shorea havilandii'' is
endemic Endemism is the state of a species being found only 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 foun ...
to Borneo. Its habitat is in
kerangas The Sundaland heath forests, also known as ''Kerangas'' forest, is a type of tropical moist forest found on the island of Borneo, which is divided between Brunei, Indonesia, and Malaysia, as well as on the Indonesian islands of Belitung and Ban ...
and swamp forests, to elevations of around .


Conservation

''Shorea havilandii'' has been assessed as
least concern A least-concern species is a species that has been evaluated and categorized by the International Union for Conservation of Nature (IUCN) as not being a focus of wildlife conservation because the specific species is still plentiful in the wil ...
on the
IUCN Red List The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is an inventory of the global conservation status and extinction risk of biological ...
and is considered abundant although declining in population. There are some threats to the species, including conversion of land for intensive agriculture, such as
palm oil Palm oil is an edible vegetable oil derived from the mesocarp (reddish pulp) of the fruit of oil palms. The oil is used in food manufacturing, in beauty products, and as biofuel. Palm oil accounted for about 36% of global oils produced from o ...
plantations. The species is also threatened by logging for its timber. ''Shorea havilandii'' does occur in a number of protected areas.


References

havilandii Endemic dipterocarps of Borneo Plants described in 1895 Flora of the Sundaland heath forests Flora of the Borneo peat swamp forests {{Dipterocarpaceae-stub