Melaleuca dealbata

Last updated

Karnbor
Melaleuca dealbata foliage and flowers.jpg
Melaleuca dealbata
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Myrtaceae
Genus: Melaleuca
Species:
M. dealbata
Binomial name
Melaleuca dealbata

Melaleuca dealbata, commonly known as karnbor or blue paperbark, is a plant in the myrtle family, Myrtaceae and is native to tropical areas in northern Australia, New Guinea and Indonesia. It is a medium to large leafy tree, growing in wet areas such as on the edges of coastal lagoons. It has papery bark, relatively large, blue-green leaves and spikes of cream-coloured flowers over a long period.

Contents

Description

Melaleuca dealbata is a relatively slow-growing tree to 25 m (80 ft) with blue-grey foliage, hairy, pendulous branchlets and papery, layered bark. The leaves are arranged alternately along the branches and are elliptic to oval in shape, 50–126 mm (2–5 in) long, 10–30 mm (0.4–1 in) wide and have five to seven prominent longitudinal veins. Young shoots and twigs are densely clothed in erect, white or silver hairs. [2] [3]

The small, creamy-white flowers are loosely arranged in 7 to 28 groups of three on spikes up to 120 mm (5 in) long and 25 mm (1 in) wide. The stamens are arranged in five bundles around the flower with 5 to 8 stamens per bundle. Flowering occurs from May to December but mainly in spring, and the fruit that follows are cup or barrel-shaped woody capsules, 2.5–3.5 mm (0.098–0.14 in) wide and long. When the fruit matures, the fine, sawdust-like seeds are released. [2] [3] [4] [5]

Paperbark trunk of M. dealbata Melaleuca dealbata bark.jpg
Paperbark trunk of M. dealbata

Taxonomy and naming

Melaleuca dealbata was first formally described in 1968 by S.T. Blake in Contributions from the Queensland Herbarium. [6] [7] The specific epithet (dealbata) is from the Latin dealbatus, meaning "covered with a white powder". [2] There are a large number of common names for this plant, including karnbor, swamp tea-tree, soapy tea-tree, blue-leaved paperbark, blue paperbark, honey tree and cloudy tea-tree. [8]

Distribution and habitat

Karnbor occurs in southern Papua New Guinea, Irian Jaya, Indonesia and northern Australia from north of Maryborough in Queensland through north Queensland to the Top End of the Northern Territory and into the Broome-Derby area and Weaber Range in the east Kimberley region of Western Australia. [3] [4] It grows in warm to hot, humid, frost-free zones where the mean annual rainfall is mainly 1,100–1,750 mm (43–69 in) in summer. It is found in swampy areas near the coast and inland, mostly on wet sites along stream banks, on seasonally swampy ground and on the edges of lagoons with a range of soil types from sand to clay. [4]

Ecology

The nectar-rich flowers of this tree attract parrots, honeyeaters, flying foxes and possums. [9]

Uses

The timber from Melaleuca dealbata is moderately heavy and very strong suggesting its potential use for posts and poles. The tree is very decorative and useful for shelterbelts and soil stabilisation and has been used for the restoration of bauxite mining sites in northern Australia. It is an excellent source of nectar for honey production. [4] The species has been tested for its oil components and found to produce an essential oil in low yield, including predominantly monoterpenes and sesquiterpenes with variation between individual plants. [10]

Related Research Articles

<i>Melaleuca</i> Genus of plants in the Myrtle family

Melaleuca is a genus of nearly 300 species of plants in the myrtle family, Myrtaceae, commonly known as paperbarks, honey-myrtles or tea-trees. They range in size from small shrubs that rarely grow to more than 16 m (52 ft) high, to trees up to 35 m (115 ft). Their flowers generally occur in groups, forming a "head" or "spike" resembling a brush used for cleaning bottles, containing up to 80 individual flowers.

<i>Melaleuca quinquenervia</i> Species of tree

Melaleuca quinquenervia, commonly known as the broad-leaved paperbark, paper bark tea tree, punk tree or niaouli, is a small- to medium-sized tree of the myrtle family, Myrtaceae. It grows as a spreading tree up to 20 m (70 ft) tall, with its trunk covered by a white, beige and grey thick papery bark. The grey-green leaves are egg-shaped, and cream or white bottlebrush-like flowers appear from late spring to autumn. It was first formally described in 1797 by the Spanish naturalist Antonio José Cavanilles.

<i>Melaleuca linariifolia</i> Species of tree

Melaleuca linariifolia is a plant in the myrtle family Myrtaceae, and is endemic to eastern Australia. It is commonly known as snow-in-summer, narrow-leaved paperbark, flax-leaved paperbark and in the language of the Gadigal people as budjur. A hardy plant, it flowers prolifically in late spring or summer, making it a popular garden shrub or small tree in temperate places. Melaleuca trichostachya is a similar species but its leaves are arranged differently and the fruits have projecting valves.

<i>Melaleuca preissiana</i> Species of tree

Melaleuca preissiana, commonly known as stout paperbark, modong or moonah, is a plant in the myrtle family, Myrtaceae and is endemic to coastal areas of southwest Australia. It is a shrub or small tree with papery bark, small leaves and spikes of usually white flowers. It occurs chiefly in areas that are seasonally wet.

<i>Melaleuca leucadendra</i> Species of tree

Melaleuca leucadendra, commonly known as weeping paperbark, long-leaved paperbark or white paperbark is a plant in the myrtle family, Myrtaceae and is widespread in northern Australia, Southeast Asia, New Guinea and the Torres Strait Islands. It is a tree, sometimes growing to more than 20 m (70 ft) with a trunk covered with thick, white, papery bark and weeping thinner branches. It has a long flowering season, can flower at almost any time of the year and is often grown as a tree in parks and on roadsides. It was the first melaleuca to be described and was described from a specimen growing in Indonesia.

<i>Melaleuca viridiflora</i> Species of flowering plant

Melaleuca viridiflora, commonly known as broad-leaved paperbark, is a plant in the myrtle family Myrtaceae, and is native to woodlands, swamps and streams in monsoonal areas of northern Australia and New Guinea. It is usually a small tree with an open canopy, papery bark and spikes of cream, yellow, green or red flowers.

<i>Melaleuca halmaturorum</i> Species of plant

Melaleuca halmaturorum, commonly known as South Australian swamp paperbark, kangaroo honey-myrtle or salt paper-bark is a plant in the myrtle family, Myrtaceae and is endemic to Western Australia, South Australia and Victoria. It is often a tree with an unusual, crooked form, sometimes looking like an enlarged example of bonsai.

<i>Melaleuca dissitiflora</i> Species of plant

Melaleuca dissitiflora, commonly known as creek tea–tree, is a plant in the myrtle family, Myrtaceae and is native to Australia. It occurs in the drier parts of Queensland, the Northern Territory, South Australia and Western Australia. It grows in places like sandy creek beds and rocky gorges but it may have potential as a more productive source of "tea tree" oil than the usual Melaleuca alternifolia. It is closely related and very similar to Melaleuca linophylla with its papery bark, narrow leaves and loose spikes of creamy-white flowers but its flowers are larger, the stamens are longer and there are more stamens per bundle than in that species.

<i>Melaleuca ericifolia</i> Species of tree

Melaleuca ericifolia, commonly known as swamp paperbark, is a plant in the myrtle family, Myrtaceae and the genus Melaleuca, native to south-eastern Australia. It is a rather variable species and some specimens resemble Melaleuca armillaris but its papery bark and smaller, more prolific flower heads distinguish it from that species. It often grows in swampy areas and the draining and clearing of these has reduced the numbers of the species, especially around Port Philip Bay near Melbourne. It is also similar to Melaleuca pustulata, a Tasmanian endemic, but that species only grows in dry heath.

<i>Melaleuca acacioides</i> Species of flowering plant

Melaleuca acacioides, commonly known as coastal paperbark and as lunyamad by the Bardi people, is a plant in the myrtle family Myrtaceae, and is native to the far north of Australia and the island of New Guinea. It is closely related to Melaleuca alsophila and Melaleuca citrolens, being differentiated from them by the number of flowers in a group. In this species, they are in groups of three. It is a small to medium-sized tree, sometimes with several trunks when growing in the open. It usually grows in areas with saline soils that are regularly flooded, often near mangroves.

<i>Melaleuca decora</i> Species of tree

Melaleuca decora, commonly known as the white feather honeymyrtle, is a plant in the myrtle family, Myrtaceae and is native to eastern Australia. It is a large shrub to small tree with papery bark, lance-shaped leaves and sweet-smelling, creamy-coloured flowers in summer. It grows in near-coastal forest and swamps in New South Wales and Queensland.

<i>Melaleuca argentea</i> Species of plant

Melaleuca argentea, commonly known as the silver cadjeput, silver-leaved paperbark, silver cajuput, or mardderr in the Kunwinjku language, is a plant in the myrtle family, Myrtaceae and is endemic to northern Australia. It is a common tree along river banks or around swamps in the tropics. It has papery bark and weeping foliage and has been the subject of important scientific research.

<i>Melaleuca arcana</i> Species of shrub

Melaleuca arcana is a small tree or large shrub in the myrtle family, Myrtaceae and is endemic to Cape York Peninsula in northern Australia. It has papery bark and small heads of white flowers in summer.

<i>Melaleuca fluviatilis</i> Species of tree

Melaleuca fluviatilis is a plant in the myrtle family, Myrtaceae and is endemic to northern Queensland in Australia. It is a tree with papery bark, narrow leaves and spikes of white or creamy-coloured flowers, usually growing along streams and rivers. It is common in tropical areas and is sometimes confused with Melaleuca argentea although it lacks that species' silvery foliage.

<i>Melaleuca groveana</i> Species of flowering plant

Melaleuca groveana, commonly known as Grove's paperbark is a plant in the myrtle family Myrtaceae and is endemic to New South Wales and Queensland in Australia. It is an uncommon species with relatively large heads of white flowers in spring, the styles of which are significantly longer than the stamens.

<i>Melaleuca irbyana</i> Species of flowering plant

Melaleuca irbyana, commonly known as weeping paperbark, bushhouse paperbark and swamp paperbark, is a plant in the myrtle family Myrtaceae and is endemic to New South Wales and Queensland in Australia. It is a shrub or small tree, often growing in pure stands in poorly drained areas. Its distribution is limited and it has been classified as an endangered species under legislation in both states and the forest as critically endangered under Australian government legislation.

Melaleuca saligna is a shrub or tree in the myrtle family (Myrtaceae) and is endemic to Cape York Peninsula in Queensland. It is a small tree with papery bark on the trunk, pendulous branches and white to greenish-yellow flowers between February and November. This species should not be confused with Callistemon salignus. If that species were to be moved to the genus Melaleuca, as proposed by some authors, its name would become Melaleuca salicina. Melaleuca saligna has its stamens arranged in bundles; the stamens of Callistemon salignus/Melaleuca salicina are all free.

<i>Melaleuca stenostachya</i> Species of tree

Melaleuca stenostachya, commonly known as fibre-barked teatree or straight teatree is a plant in the myrtle family Myrtaceae and is native to the Cape York Peninsula in northern Australia, the gulf country of the Northern Territory and the south of Papua New Guinea. It is closely related to Melaleuca dealbata but can be distinguished from that species by the wide separation of the flowers in the inflorescence.

<i>Melaleuca tamariscina</i> Species of flowering plant

Melaleuca tamariscina, commonly known as bush-house paperbark or tamarix honey-myrtle is a plant in the myrtle family, Myrtaceae and is endemic to central Queensland in Australia. It grows to the height of a small tree with small, scale-like leaves that are pressed against the branches, and has a papery bark and a weeping habit.

Melaleuca ferruginea is a plant in the myrtle family, Myrtaceae and is endemic to areas near the coast of the Northern Territory in Australia. It grows to tree size, its new bark is reddish-brown and papery, and its flowers are arranged in spikes new the ends of its branches.

References

  1. "Melaleuca dealbata". Plants of the World Online. Retrieved 28 August 2021.
  2. 1 2 3 Brophy, Joseph J.; Craven, Lyndley A.; Doran, John C. (2013). Melaleucas : their botany, essential oils and uses. Canberra: Australian Centre for International Agricultural Research. p. 138. ISBN   9781922137517.
  3. 1 2 3 Holliday, Ivan (2004). Melaleucas : a field and garden guide (2nd ed.). Frenchs Forest, N.S.W.: Reed New Holland Publishers. pp. 80–81. ISBN   1876334983.
  4. 1 2 3 4 "Species bank: Melaleuca dealbata". Australian Government Department of the Environment. Retrieved 2 March 2015.
  5. F.A.Zich; B.P.M.Hyland; T.Whiffen; R.A.Kerrigan (2020). "Melaleuca dealbata". Australian Tropical Rainforest Plants Edition 8 (RFK8). Centre for Australian National Biodiversity Research (CANBR), Australian Government . Retrieved 19 June 2021.
  6. "Melaleuca dealbata". APNI. Retrieved 24 July 2015.
  7. "Melaleuca dealbata S.T. Blake". FloraBase . Western Australian Government Department of Biodiversity, Conservation and Attractions.
  8. "Melaleuca dealbata". Atlas of Living Australia. Retrieved 1 May 2016.
  9. "Swamp tea tree". North Queensland Dry Tropics. Retrieved 2 March 2015.
  10. "Melaleuca dealbata Soapy tea tree" (PDF). Australian Centre for International Agricultural Research. Retrieved 2 March 2015.