Aleurites

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Aleurites
Starr 070215-4556 Aleurites moluccana.jpg
Candlenut ( A. moluccanus )
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malpighiales
Family: Euphorbiaceae
Subfamily: Crotonoideae
Tribe: Aleuritideae
Subtribe: Aleuritinae
Genus: Aleurites
J.R.Forst. & G.Forst.
Synonyms [1] [2]
  • Camirium Gaertn.
  • AmbinaxComm. ex A.Juss.
  • TelopeaSol. ex Baill.

Aleurites is a small genus of arborescent flowering plants in the Euphorbiaceae, first described as a genus in 1776. [3] [4] It is native to China, the Indian Subcontinent, Southeast Asia, Papuasia, and Queensland. It is also reportedly naturalized on various islands (Pacific and Indian Oceans, plus the Caribbean) as well as scattered locations in Africa, South America, and Florida. [1] [5] [6]

Contents

These monoecious, evergreen trees are perennials or semiperennials. These are large trees, 15–40 m (49–131 ft) tall, with spreading, drooping, and rising branches.

The leaves are alternate, lobate, ovate to ovate-lanceolate with minute stipules. They are pubescent on both sides when young, but in a later stage they become glabrous.

The inflorescence consists of terminal plumes of small, creamy white, bell-shaped, fragrant flowers, branching from the base. The flowers are usually bisexual, with a solitary pistillate flower at the end of each major axis. The lateral cymes are staminate. There are five or six imbricate petals. The staminate flowers are mostly longer and thinner than the pistillate flowers, with 17–32 glabrous stamens in four whorls. The pistillate flowers have a superior ovary.

The fruits are rather large drupes with a fleshy exocarp and a thin, woody endocarp. They vary in shape, according to the numbers of developed locules. They contain oleiferous, poisonous seeds.

The oil has been used as a paraffin and lubricant, and as a constituent of varnish, paint, and soap. Once poisonous substances are removed, it can be used as a cooking oil.

Some deciduous Chinese species are now classified under a separate genus Vernicia .

The name Aleurites is derived from the Ancient Greek : ἄλευρον meaning "wheaten flour" or "ground meal", [7] because of the appearance of the lower surface of the leaf.

Taxonomy and nomenclature

Linnaeus assigned the Latin feminine grammatical gender to the genus name Aleurites, as for example in the species name Aleurites moluccana. The current International Code of Nomenclature for algae, fungi, and plants has standardized all genus names ending in -ites to use the masculine gender, so the correct name of the species Aleurites moluccanus. [8] [9]

Species

Candlenut (Aleurites moluccanus) Starr 020630-0030 Aleurites moluccana.jpg
Candlenut (Aleurites moluccanus)
Candlenut seedling Starr 030807-0057 Aleurites moluccana.jpg
Candlenut seedling

Accepted species [1] [10]

The most widespread species is the candlenut ( Aleurites moluccanus ), occurring from tropical Asia and the Pacific, from India to China and Polynesia, Australia and New Zealand. Some botanists only recognize two species, A. moluccanus and A. rockinghamensis.

  1. Aleurites moluccanus (L.) Willd. Indian walnut, candlenut tree, country walnut, aburagiri, ama - most of genus range
  2. Aleurites rockinghamensis (Baill.) P.I.Forst. - Papua New Guinea, Queensland
formerly included [1]

moved to other genera: Croton, Mallotus, Omphalea, Reutealis, Vernicia

Related Research Articles

<i>Vernicia fordii</i> Species of tree

Vernicia fordii is a species of flowering plant in the spurge family native to southern China, Myanmar, and northern Vietnam. It is a small to medium-sized deciduous tree growing to 20 m tall, with a spreading crown. The bark is smooth and thin, and bleeds latex if cut. The leaves are alternate, simple, 4.5–25 cm long and 3.5–22 cm broad, heart-shaped or with three shallow, maple-like lobes, green above and below, red conspicuous glands at the base of the leaf, and with a 5.5–26 cm long petiole. The flowers are 2.5–3.5 cm diameter, with five pale pink to purple petals with streaks of darker red or purple in the throat; it is monoecious with individual flowers either male or female, but produced together in the inflorescences. The flowers appear before or with the leaves in loose, terminal clusters. The fruit is a hard, woody pear-shaped berry 4–6 cm long and 3–5 cm diameter, containing four or five large, oily seeds; it is green initially, becoming dull brown when ripe in autumn.

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

Vernicia is a genus in the spurge family Euphorbiaceae, first described as a genus in 1790. It is native to China, Japan, India, and Indochina. The species have often been included within the related genus Aleurites.

<i>Aleurites moluccanus</i> Species of tree in the family Euphorbiaceae

Aleurites moluccanus, the candlenut, is a flowering tree in the spurge family, Euphorbiaceae, also known as candleberry, Indian walnut, kemiri, varnish tree, nuez de la India, buah keras, godou, kukui nut tree, and rata kekuna.

<i>Mallotus</i> (plant) Genus of flowering plants in the spurge family Euphorbiaceae

Mallotus is a genus of the spurge family Euphorbiaceae first described as a genus in 1790. Two species are found in tropical Africa and Madagascar. All the other species are found in East Asia, the Indian Subcontinent, Southeast Asia, eastern Australia, and certain islands of the western Pacific. The genus has about 150 species of dioecious trees or shrubs.

<i>Comptonia peregrina</i> Species of plant native to eastern North America

Comptonia peregrina is a species of flowering plant in the family Myricaceae native to eastern North America. It is the only extant (living) species in the genus Comptonia, although a number of extinct species are placed in the genus.

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

Myoporum is a genus of flowering plants in the figwort family, Scrophulariaceae. There are 30 species in the genus, eighteen of which are endemic to Australia although others are endemic to Pacific Islands, including New Zealand, and one is endemic to two Indian Ocean islands. They are shrubs or small trees with leaves that are arranged alternately and have white, occasionally pink flowers and a fruit that is a drupe.

Spathiostemon is a genus of trees in the Euphorbiaceae family. It is native to the Bismarck Archipelago, New Guinea, Wallacea and Southeast Asia. The trees grow between 10 and 20m tall, often in secondary forest. The wood is sometimes used.

Clonostylis is a monotypic genus of flowering plant in the family Euphorbiaceae. The sole species is Clonostylis forbesii is a flowering tree found in Sumatra. It has small glabrous leaves with an elliptic shape, arranged spirally.

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

Chamaesyce is a genus of plants in the family Euphorbiaceae. Recent phylogenetic studies have shown that Chamaesyce is deeply nested within the broader Euphorbia. Specifically, Chamaesyce is very closely related to plants like Euphorbia pulcherrima, the popular poinsettia. Currently, all species have now been reclassified as species of Euphorbia. Specifically, this group now belongs to Euphorbia subgenus Chamaesyce section Anisophyllum. Taxonomically speaking, Chamaesyce is considered a synonym of Euphorbia.

<i>Baccharis pilularis</i> Species of shrub

Baccharis pilularis, called coyote brush, chaparral broom, and bush baccharis, is a shrub in the family Asteraceae native to California, Oregon, Washington, and Baja California. There are reports of isolated populations in New Mexico, most likely introduced.

Candlenut oil or kukui nut oil is extracted from the nut of Aleurites moluccanus, the candlenut or kuku'i.

<i>Antidesma bunius</i> Species of tree

Antidesma bunius is a species of fruit tree in the family Phyllanthaceae. It is native to Southeast Asia and northern Australia. Its common Philippine name and other names include bignay, bugnay or bignai, Chinese-laurel, Queensland-cherry, salamander-tree, wild cherry, and currant tree.

<i>Croton gratissimus</i> Species of shrub

Croton gratissimus, is a tropical African shrub or small tree with corky bark, growing to 8 m and belonging to the family of Euphorbiaceae or spurges. Young twigs are slender and angular and covered in silver and rust-coloured scales.

Croton yecorensis is a plant species endemic to a small region the State of Sonora, Mexico. The plant is known only from a mountainous region in the Sierra Madre Occidental in extreme eastern Sonora, only a few km from the line with Chihuahua. All the known populations lie within 60 km of one another in open rocky areas in pin-oak woodlands at elevations of 1200–1700 m.

<i>Acalypha ostryifolia</i> Species of flowering plant

Acalypha ostryifolia, sometimes spelled ostryaefolia, is a plant in the family Euphorbiaceae and is commonly known as hophornbeam copperleaf, hornbeam copperleaf, or pineland threeseed mercury, is an annual herb of the copperleaf genus Acalypha. It is a native of North and Central America and is generally considered a weed.

Fontainea borealis is a small tree endemic to Papua New Guinea, in the family, Euphorbiaceae, which grows to a height of 12 m.

Mallotus floribundus is a tree in the family Euphorbiaceae, in the Stylanthus section, native to Southeast Asia, Wallaceae, New Guinea and the Solomon Islands.

Spathiostemon moniliformis is a plant that can grow as a shrub or a tree in the Euphorbiaceae family, Acalypheae tribe. It is endemic to southern/peninsular Thailand.

<i>Mallotus peltatus</i>

Mallotus peltatus is a species of flowering plant in the family Euphorbiaceae, native from India to Papuasia. It was first described by Eduard Ferdinand Geiseler in 1807 as Aleurites peltatus.

References

  1. 1 2 3 4 Kew World Checklist of Selected Plant Families
  2. "Genus: Aleurites J. R. Forst. & G. Forst". Germplasm Resources Information Network. United States Department of Agriculture. 2007-10-05. Archived from the original on 2010-05-28. Retrieved 2010-10-09.
  3. Forster, Johann Reinhold & Forster, Johann Georg Adam. 1775. Characteres Generum Plantarum 111, pl. 56
  4. Tropicos, Aleurites J.R. Forst. & G. Forst.
  5. Govaerts, R., Frodin, D.G. & Radcliffe-Smith, A. (2000). World Checklist and Bibliography of Euphorbiaceae (and Pandaceae) 1-4: 1–1622. The Board of Trustees of the Royal Botanic Gardens, Kew.
  6. Flora of China Page 265 石栗属 shi li shu Aleurites J. R. Forster & G. Forster, Char. Gen. Pl. 111. 1776.
  7. Chisholm, Hugh, ed. (1911). "Aleurites"  . Encyclopædia Britannica . Vol. 1 (11th ed.). Cambridge University Press. p. 543.
  8. "Aleurites moluccanus". Germplasm Resources Information Network . Agricultural Research Service, United States Department of Agriculture . Retrieved 2018-01-10.
  9. McNeill, J.; Barrie, F.R.; Buck, W.R.; Demoulin, V.; Greuter, W.; Hawksworth, D.L.; Herendeen, P.S.; Knapp, S.; Marhold, K.; Prado, J.; Prud'homme Van Reine, W.F.; Smith, G.F.; Wiersema, J.H.; Turland, N.J. (2012). International Code of Nomenclature for algae, fungi, and plants (Melbourne Code) adopted by the Eighteenth International Botanical Congress Melbourne, Australia, July 2011. Vol. Regnum Vegetabile 154. A.R.G. Gantner Verlag KG. ISBN   978-3-87429-425-6. Article 62.4
  10. "GRIN Species Records of Aleurites". Germplasm Resources Information Network. United States Department of Agriculture. Retrieved 2010-10-09.

Further reading