Khaya

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Khaya
Khaya senegalensis MS 2037.JPG
Khaya senegalensis in habitat
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Sapindales
Family: Meliaceae
Subfamily: Cedreloideae
Genus: Khaya
A.Juss.
Species

See text

Khaya is a genus of five tree species in the mahogany family Meliaceae. The timber of Khaya is called African mahogany, and is valued as a substitute to American mahogany (of the genus Swietenia ). [1]

Contents

Description

The genus is native to tropical Africa and Madagascar. All species grow to around 30–35m tall, rarely 45m, with a trunk over 1m diameter, often buttressed at the base.

The leaves are pinnate, with 4-6 pairs of leaflets, the terminal leaflet absent; each leaflet is 10–15 cm long abruptly rounded toward the apex but often with an acuminate tip. The leaves can be either deciduous or evergreen depending on the species. The flowers are produced in loose inflorescences, each flower small, with four or five yellowish petals and ten stamens. The fruit is a globose four or five-valved capsule 5–8 cm diameter, containing numerous winged seeds.

Species

Uses

The timber of Khaya is called "African mahogany", with wood properties generally regarded as the closest to genuine mahogany. [2]

The seeds of K. senegalensis have an oil content of 52.5%, consisting of 21% palmitic acid, 10% stearic acid, 65% oleic acid, and 4% "unidentifiable acid" [3]

The durable reddish-brown wood of K. anthotheca is used for dug-out canoes or makoros and as a general beam, door frame and shelving timber which is termite and borer resistant. [4]

Related Research Articles

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Entandrophragma cylindricum is a tree of the genus Entandrophragma of the family Meliaceae. It is commonly known as sapele or sapelli or sapele mahogany, as well as aboudikro, assi, and muyovu.

<i>Swietenia</i> Genus of flowering plants in the chinaberry family Meliaceae

Swietenia is a genus of trees in the chinaberry family, Meliaceae. It occurs natively in the Neotropics, from southern Florida, the Caribbean, Mexico and Central America south to Bolivia. The genus is named for Dutch-Austrian physician Gerard van Swieten (1700–1772). The wood of Swietenia trees is known as mahogany.

<i>Entandrophragma</i> Genus of flowering plants

Entandrophragma is a genus of eleven known species of deciduous trees in the family Meliaceae.

<i>Irvingia gabonensis</i> Species of tree

Irvingia gabonensis is a species of African trees in the genus Irvingia, sometimes known by the common names wild mango, African mango, or bush mango. They bear edible mango-like fruits, and are especially valued for their fat- and protein-rich nuts.

<i>Pterocarpus angolensis</i> Species of legume

Pterocarpus angolensis is a species of Pterocarpus native to southern Africa, in Angola, Mozambique, Namibia, South Africa, Eswatini, Tanzania, Democratic Republic of the Congo, Zimbabwe, and Zambia. It is a protected tree in South Africa. The name Kiaat, although Afrikaans, is sometimes used outside South Africa as well. In Zimbabwe, depending on what region you are in, it is known as Mukwa or Mubvamaropa.

<i>Toona ciliata</i> Species of tree

Toona ciliata is a forest tree in the mahogany family which grows throughout South Asia from Afghanistan to Papua New Guinea and Australia.

<i>Acacia dealbata</i> Species of flowering plant

Acacia dealbata, the silver wattle, blue wattle or mimosa, is a species of flowering plant in the legume family Fabaceae, native to southeastern Australia in New South Wales, Victoria, Tasmania, and the Australian Capital Territory, and widely introduced in Mediterranean, warm temperate, and highland tropical landscapes.

<i>Afzelia africana</i> Species of legume

Afzelia africana, the African mahogany, afzelia, lenke, lengue, apa, or doussi, is a tree species in the family Fabaceae.

<i>Aglaia argentea</i> Species of flowering plant

Aglaia argentea is a species of plant in the family Meliaceae. It is a tree found in Australia, Brunei, India, Indonesia, Malaysia, Myanmar, Papua New Guinea, the Philippines, the Solomon Islands, and Thailand.

<i>Khaya anthotheca</i> Species of tree

Khaya anthotheca, with the common name East African mahogany, is a large tree species in the Meliaceae family, native to tropical Africa.

<i>Khaya senegalensis</i> Species of tree

Khaya senegalensis is a species of tree in the Meliaceae family that is native to Africa. Common names include African mahogany, dry zone mahogany, Gambia mahogany, khaya wood, Senegal mahogany, cailcedrat, acajou, djalla, and bois rouge.

<i>Annona senegalensis</i> Species of plant

Annona senegalensis, commonly known as African custard-apple, wild custard apple, wild soursop, abo ibobo, sunkungo, and dorgot is a species of flowering plant in the custard apple family, Annonaceae. The specific epithet, senegalensis, translates to mean "of Senegal", the country where the type specimen was collected.

<i>Dysoxylum fraserianum</i> Species of tree

Dysoxylum fraserianum, commonly known as rosewood or rose mahogany, is a medium-sized to large tree native to New South Wales and Queensland. It is widely used with the purpose of street design and to provide shade in the eastern suburbs of Sydney. Rosewood ranges from the rainforest around eastern Australia from Bundaberg in Queensland to Wyong in New South Wales. At maturity, it can reach a height of 57 metres (200 ft). It is generally known for its strong scent of rose from its bark.

<i>Dysoxylum mollissimum <span style="font-style:normal;">subsp.</span> molle</i> Subspecies of tree

Dysoxylum mollissimum subsp. molle, the red bean or Miva mahogany, is a rainforest tree in the family Meliaceae. It occurs in tropical, sub-tropical and littoral rainforests in eastern Australia, as far southwards as north-eastern New South Wales. Also occurs in Malesia and the south-western Pacific Islands. In Australia it is distributed from the Bellinger River in New South Wales in the south, to the wet tropics of north-eastern Queensland. The specific epithet mollissimum is from the Latin, meaning "very soft", describing the soft hairy leaflets. A signposted red bean tree may be seen near the car park of Victoria Park Nature Reserve in north-eastern New South Wales.

<i>Platypodium elegans</i> Species of legume

Platypodium elegans, the graceful platypodium, is a large leguminous tree found in the Neotropics that forms part of the forest canopy. It was first described by Julius Rudolph Theodor Vogel in 1837 and is the type species of the genus. The tree has been known to grow up to 30 metres in height and have a trunk with a diameter up to 1 m at breast height. Its trunk has large holes in it, sometimes making it possible to see through the trunk. The holes provide a habitat for giant damselflies and other insects both when alive and once the tree has died and fallen over. It has compound leaves each of which is made up of 10–20 leaflets. Three new chemical compounds have been isolated from the leaves and they form part of the diet of several monkeys and the squirrel Sciurus ingrami. In Panama it flowers from April to June, the flowers contain only four ovules, but normally only one of these reaches maturity forming a winged seed pod around 10 cm long and weighing 2 g. During the dry season around a year after the flowers are fertilised, the seeds are dispersed by the wind and the tree loses it leaves. The seeds are eaten by agoutis and by bruchid beetle larvae. The majority of seedlings are killed by damping off fungi in the first few months of growth, with seedlings that grow nearer the parent trees being more likely to die. The seedlings are relatively unable to survive in deep shade compared to other species in the same habitat. Various epiphytes are known to grow on P. elegans with the cactus Epiphyllum phyllanthus being the most abundant in Panama. Despite having holes in its trunk which should encourage debris and seeds to collect, hemiepiphytes are relatively uncommon, meaning that animals are not attracted to it to feed and then defecate. It has no known uses in traditional medicine and although it can be used for timber, the wood is of poor quality.

<i>Toona sureni</i> Species of tree

Toona sureni is a species of tree in the mahogany family. It is native to South Asia, Indochina, Malesia, China, and Papua New Guinea. It is commonly known as the suren toon, surian, limpaga, iron redwood or the red cedar. It is also known as the Indonesian mahogany or the Vietnamese mahogany. The species is a valuable timber tree.

<i>Entandrophragma caudatum</i> Species of flowering plant

Entandrophragma caudatum, or mountain mahogany, is a large Southern African tree belonging to the mahogany family and found in eastern and north eastern South Africa, Eswatini, Botswana, Angola, the Caprivi Strip region of Namibia, Zimbabwe, Zambia and Malawi. Kew currently recognises 12 other species of Entandrophragma, all with a tropical and sub-tropical African distribution.

<i>Dysoxylum arborescens</i> Species of plant in the family Meliaceae

Dysoxylum arborescens, commonly known in Australia as Mossman mahogany, is a small tree in the mahogany family Meliaceae. It is native to rainforests of Malesia, Papuasia, Queensland and nearby islands.

Erythrophleum ivorense is a species of leguminous tree in the genus Erythrophleum found in the rainforests of tropical West and Central Africa. The tree has many uses; the timber is used for heavy construction, for making charcoal and for firewood, the bark is used for tanning and in traditional medicine, and both bark and seeds are poisonous and used for hunting.

Daniellia oliveri is a species of tree in the family Fabaceae. It is native to tropical West and Central Africa and is commonly known as the African copaiba balsam tree, or the West African copal tree.

References

  1. "African Mahogany | The Wood Database". Archived from the original on 2019-09-02. Retrieved 2023-10-25.
  2. "Mahogany Mixups: the Lowdown | The Wood Database". Archived from the original on 2019-09-02. Retrieved 2023-10-25.
  3. Okieimen, F.E; Eromosele, C.O (1999). "Fatty acid composition of the seed oil of Khaya senegalensis". Bioresource Technology. 69 (3): 279–280. doi:10.1016/S0960-8524(98)00190-4.
  4. Joffe, Pitta: (2007), Indigenous Plants of South Africa, Briza Publications, pg 123