Xanthophyllum longum

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Xanthophyllum longum
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Polygalaceae
Genus: Xanthophyllum
Species:
X. longum
Binomial name
Xanthophyllum longum

Xanthophyllum longum is a tree in the family Polygalaceae. The specific epithet longum is from the Latin meaning "long", referring to the petioles. [3]

Contents

Description

Xanthophyllum longum grows up to 5 metres (20 ft) tall with a trunk diameter of up to 10 centimetres (4 in). The bark is pale greenish or blackish. The brownish fruits are round and measure up to 1.7 cm (1 in) in diameter. [3]

Range and habitat

Xanthophyllum longum is endemic to Borneo and known only from Sabah, where it is known only from Sg Pinangah Forest Reserve. The species' current estimated extent of occurrence (EOO) and area of occupancy (AOO) are 4 km2. It grows in lowland rain forests along streams and on hillsides on undulating land between 350 and 500 metres elevation. [1]

Conservation

Urbanization and habitat loss have reduced its area of occupancy by 67%, and its extent of occurrence (EOO) by over 90%. The species' remaining population is within a commercial forest reserve, which is open to logging. Its conservation status is assessed as critically endangered. [1]

Related Research Articles

<i>Xanthophyllum</i> Genus of trees and shrubs (Polygalaceae)

Xanthophyllum is a genus of about 109 species of trees and shrubs, of the plant family Polygalaceae;. The generic name is from the Greek meaning "yellow leaf", referring to how the leaves are often yellow when dry. In Borneo it is known as minyak berok in Malay or nyalin in the Iban language.

Payena khoonmengiana is a tree in the family Sapotaceae. It is endemic to Borneo and known only from Sabah.

Xanthophyllum beccarianum is a tree in the family Polygalaceae. It is named for the Italian botanist Odoardo Beccari.

Xanthophyllum bicolor is a tree in the family Polygalaceae. The specific epithet bicolor is from the Latin meaning "two-coloured", referring to the different colours of the leaf and petiole.

Xanthophyllum brachystachyum is a tree in the family Polygalaceae. The specific epithet brachystachyum is from the Greek meaning "short spike", referring to the shortness of the inflorescence.

Xanthophyllum ceraceifolium is a tree in the family Polygalaceae. The specific epithet ceraceifolium means "waxy leaf", referring to the appearance of the leaves.

Xanthophyllum adenotus var. arsatii is a plant in the family Polygalaceae. It grows as a tree or shrub.

Xanthophyllum flavescens is a plant in the family Polygalaceae. The specific epithet flavescens is from the Latin meaning "becoming yellow", referring to the leaves.

Xanthophyllum impressum is a tree in the family Polygalaceae. The specific epithet impressum is from the Latin meaning "impressed", referring to the enclosed position of the axillary buds.

Xanthophyllum korthalsianum is a tree in the family Polygalaceae. It is named for the Dutch botanist Pieter Willem Korthals.

Xanthophyllum lineare is a tree in the family Polygalaceae. The specific epithet lineare is from the Latin meaning "line", referring to the linear shape of the leaves.

Xanthophyllum macrophyllum is a plant in the family Polygalaceae. The specific epithet macrophyllum is from the Greek meaning "large leaf".

Xanthophyllum montanum is a tree in the family Polygalaceae. The specific epithet montanum is from the Latin meaning "mountainous", referring to the tree's habitat.

Xanthophyllum neglectum is a tree in the family Polygalaceae. The specific epithet neglectum is from the Latin meaning "neglected", referring to how the species has been long overlooked.

Xanthophyllum nitidum is a tree in the family Polygalaceae. The specific epithet nitidum is from the Latin meaning "shiny", referring to the leaf surfaces.

Xanthophyllum pachycarpon is a tree in the family Polygalaceae. The specific epithet pachycarpon is from the Greek meaning "thick fruit", referring to the thick wall of the fruit.

Xanthophyllum pedicellatum is a plant in the family Polygalaceae. The specific epithet pedicellatum is from the Latin, referring to the long pedicel.

Xanthophyllum pulchrum is a plant in the family Polygalaceae. The specific epithet pulchrum is from the Latin meaning "beautiful", referring to the plant's appearance.

Xanthophyllum rectum is a tree in the family Polygalaceae. The specific epithet rectum is from the Latin meaning "upright", referring to the inflorescences.

Xanthophyllum vitellinum is a plant in the family Polygalaceae. The specific epithet vitellinum is from the Latin meaning "egg-yolk yellow", referring to the colour of the flower petals.

References

  1. 1 2 3 Tanggaraju, S.; Hor, C.S.; Sugau, J.; Nilus, R.; Maycock, C.R.; Matusin, Dg Ku Rozianah, M.; Khoo, E.; Damit, A.; Mohd Yusof, Nur Adillah, M.Y.; Tsen, S.; Pereira, J.T. (2021). "Xanthophyllum longum". IUCN Red List of Threatened Species . 2021: e.T162025212A162033764. doi: 10.2305/IUCN.UK.2021-1.RLTS.T162025212A162033764.en . Retrieved 5 April 2023.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  2. ↑ "Xanthophyllum longum W.J.de Wilde & Duyfjes". The Plant List . Retrieved 25 March 2014.
  3. 1 2 De Wilde, W. J. J. O.; Duyfjes, Brigitta E. E. (March 2007). "Xanthophyllum longum W.J.de Wilde & Duyfjes" (PDF). In Soepadmo, E.; Saw, L. G.; Chung, R. C. K.; Kiew, Ruth (eds.). Tree Flora of Sabah and Sarawak. (free online from the publisher, lesser resolution scan PDF versions). Vol. 6. Forest Research Institute Malaysia. p. 261. ISBN   978-983-2181-89-7 . Retrieved 25 March 2014.


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