Dodonaea viscosa | |
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Flowers of Dodonaea viscosa | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Sapindales |
Family: | Sapindaceae |
Genus: | Dodonaea |
Species: | D. viscosa |
Binomial name | |
Dodonaea viscosa | |
Dodonaea viscosa, also known as the broadleaf hopbush, is a species of flowering plant in the Dodonaea (hopbush) genus that has a cosmopolitan distribution in tropical, subtropical and warm temperate regions of Africa, the Americas, southern Asia and Australasia. Dodonaea is part of Sapindaceae, the soapberry family. [3]
This species is notable for its extremely wide distribution, which it achieved only over the last 2 million years (from its region of origin in Australia) via oceanic dispersal. Harrington and Gadek (2009) referred to D. viscosa as having "a distribution equal to some of the world’s greatest transoceanic dispersers". [4]
D. viscosa is a shrub growing to 1–3 m (3.3–9.8 ft) tall, [5] rarely a small tree to 9 m (30 ft) tall. The leaves are variable in shape: generally obovate but some of them are lanceolate, often sessile, [6] 4–7.5 cm (1.6–3.0 in) long and 1–1.5 cm (0.39–0.59 in) broad, alternate in arrangement, and secrete a resinous substance. Many specimens have a pointed or rounded apex. Leaf base is extended. Leaf texture is leathery, tough, but also pliable. Midribs are medium becoming less visible close to the apex. Secondary veins are thin, generally indistinct; Veins: often 6 to 10 pairs, indifferently opposite, subopposite, and alternate, camptodrome. Venation branches from the midrib at different angles, which may vary from 12° to 70°. The basal veins are very ascending in some plants: the angle of divergence may be close to 45°. The basal secondary venation branches from a point near the base of the main vein and becomes parallel with the leaf margin, with the distance of 1 millimeter to 2 millimeters from the edges. Margins are usually toothed or undulating. The remaining secondary veins lay at regular intervals with flowers usually growing at the branches’ ends.
The flowers are yellow to orange-red and produced in panicles about 2.5 cm (0.98 in) in length. The flowers may be only male or female ones, and one plant bears either male or female flowers. However, sometimes they are observed to bear flowers of both sexes. The pollen is transported by anemophily. It is believed that the flowers lack petals during evolution to increase exposure to the wind. The fruit is a capsule 1.5 cm (0.59 in) broad, red ripening brown, with two to four wings. [7]
The common name hopbush is used for D. viscosa specifically and also for the genus as a whole.
In the south Indian state of Tamil Nadu, this plant is called virāli (விராலி). [8]
Australian common names include: broad leaf hopbush, candlewood, giant hopbush, narrow leaf hopbush, sticky hopbush, native hop bush, soapwood, switchsorrel, wedge leaf hopbush, and native hop. [9] The Wiradjuri people of New South Wales use the name Bururr. [10]
Additional common names include: ʻaʻaliʻi and ‘a‘ali‘i-ku ma kua and ‘a‘ali‘i ku makani in the Hawaiian language; akeake (New Zealand); lampuaye (Guam); mesechelangel (Palau); chirca (Uruguay, Argentina); Xayramad (Somalia); romerillo (Sonora, Mexico); jarilla (southern Mexico); hayuelo (Colombia); ch'akatea (Bolivia); casol caacol (Seri); [11] ghoraskai (Afghanistan); vassoura-vermelha (Brazil).
Phylogenetic evidence supports D. viscosa being the sister species to D. camfieldii , a species endemic to a small portion of coastal New South Wales in Australia. [12]
There are several subspecies as follows: [13]
Botanical synonyms
This section relies largely or entirely on a single source .(November 2023) |
It has been identified that D. viscosa split into two intraspecific groups, known as groups I and II, in the Pleistocene, about 1.1–2.1 Ma (million years ago) (95% Highest Posterior Density, HPD). [3] These two intraspecific groups are distributed differently within Australia. Group I plants are strandline shrubs growing from northeastern Queensland to the New South Wales border. This clade has a number of genetically divergent lineages (I:a,b,c,d,e,f,g,). It is identified that subclade Ib shared a last common ancestor with subclade Ia in the mid-Pleistocene, 0.5–1.2 Ma.
The Group II of D. viscosa is present almost everywhere on the continent. Group II has at least three evolutionary lineages (II a, b and c), which distributions generally overlap. According to West [14] these subspecies have morphological intergradation, particularly in the higher-rainfall regions of Australia, but not in the arid zone, where they generally overlap. There is also a hypothesis of ongoing gene flow between D. procumbens and D. viscosa's Group II resulting from hybridization events of two populations in central regions of South Australia. [3] The Group II members are believed to have dispersed in the mid-Pleistocene (0.5–1.2 Ma) from mainland Australia to New Zealand.
The wood is extremely tough and durable. In New Zealand, where it is the heaviest of any native wood, the Māori have traditionally used it for making weapons, carved walking staves, axe-handles, and weights on drill shafts. [15] D. viscosa is used by the people from the western part of the island of New Guinea, Southeast Asia, West Africa and Brazil for house building and as firewood. Its leaves may also be used as plasters for wounds. [16]
Native Hawaiians made pou (house posts), laʻau melomelo (fishing lures), and ʻōʻō (digging sticks) from ʻaʻaliʻi wood and a red dye from the fruit. [17]
The cultivar 'Purpurea', with purple foliage, is widely grown as a garden shrub. Dodonaea viscosa easily occupies open areas and secondary forest, and is resistant to salinity, drought and pollution. [16] It can be used for dune stabilization, remediation of polluted lands and for reforestation. The plant is tolerant to strong winds, and therefore is commonly used as hedge, windbreak, and decorative shrub.
The Seri use the plant medicinally. [11] It was also used to stimulate lactation in mothers, as a dysentery treatment, to cure digestive system disorders, skin problems and rheumatism in Africa and Asia. In New Guinea, people use it as incense for funerals. In the past D. viscosa was used instead of hops for beer brewing by Australians (as reflected in the name “hopbush”). [16]
Dodonaea viscosa can be grown from seeds. However, pre-treatment of the seed in very hot water may be needed. [16] The plant can also be cultivated by taking cuttings. Sometimes this method is also used to obtain female plants with their winged fruits for the aesthetic value. Hopbush can survive long dry periods and is easily cultivated without heavy feeding. Due to it being frost sensitive, it grows best under shelter in well-drained, moist soil with full sun. [18] [19] It can grow in a variety of areas but should not be planted in places prone to fire because it burns quite easily. [20]
Dodonaea viscosa is a shrub, with a wide distribution in tropical and subtropical regions around the world. [21] D. viscosa leaves secrete a white resinous substance with allelopathic effects. [22] In coastal regions of Brazil, D. viscosa reduced the abundance of other native species by five times compared to open sites and exhibited a strong negative interaction strength, indicating an interfering interaction pattern. [23]
The genus Aesculus, with species called buckeye and horse chestnut, comprises 13–19 species of flowering plants in the family Sapindaceae. They are trees and shrubs native to the temperate Northern Hemisphere, with six species native to North America and seven to 13 species native to Eurasia. Several hybrids occur. Aesculus exhibits a classical Arcto-Tertiary distribution.
Alectryon is a genus of about 30 species of trees and shrubs from the family Sapindaceae. They grow naturally across Australasia, Papuasia, Melanesia, western Polynesia, east Malesia and Southeast Asia, including across mainland Australia, especially diverse in eastern Queensland and New South Wales, the Torres Strait Islands, New Guinea, the Solomon Islands, New Caledonia, New Zealand, Vanuatu, Fiji, Samoa, Hawaii, Indonesia and the Philippines. They grow in a wide variety of natural habitats, from rainforests, gallery forests and coastal forests to arid savannas and heaths.
Ptelea is a genus of flowering plants in the citrus family, Rutaceae. The name, of Greek derivation, is the classical name of the elm tree. Carl Linnaeus used that word for this genus because of the resemblance of its fruit to that of the elm. Members of the genus are commonly known as hoptrees.
Persoonia, commonly known as geebungs or snottygobbles, is a genus of about one hundred species of flowering plants in the family Proteaceae. Plants in the genus Persoonia are shrubs or small trees usually with smooth bark, simple leaves and usually yellow flowers arranged along a raceme, each flower with a leaf or scale leaf at the base. The fruit is a drupe.
Osteospermum moniliferum is an evergreen flowering shrub or small tree in the daisy family, Asteraceae. It is native to southern Africa, ranging through South Africa and Lesotho to Mozambique and Zimbabwe.
Dodonaea, commonly known as hop-bushes, is a genus of about 70 species of flowering plants in the soapberry family, Sapindaceae. The genus has a cosmopolitan distribution in tropical, subtropical and warm temperate regions of Africa, the Americas, southern Asia and Australasia, but 59 species are endemic to Australia.
Hakea petiolaris, commonly known as the sea-urchin hakea, is a shrub or small tree with cream-coloured and pink or purple flowers and woody fruit. It is endemic to the south west of Australia, occurring at the coastal plain, jarrah forest and wheatbelt regions, often at the ancient granite outcrops of Western Australia.
Dodonaea viscosa subsp. angustifolia, synonym Dodonaea angustifolia, is a slender shrub or small tree that occurs naturally from southern Africa to Arabia, as well as in Australia and New Zealand. The seed capsules are three-winged and are dispersed by wind. Although occurring in rocky areas, it is also cultivated to stabilise moving sand and to prevent erosion.
Atriplex vesicaria, commonly known as bladder saltbush, is a species of flowering plant of the family Amaranthaceae and is endemic to arid and semi-arid inland regions of Australia. It is an upright or sprawling shrub with scaly leaves and separate male and female plants, the fruit often with a bladder-like appendage.
Grevillea montis-cole, commonly known as Mount Cole grevillea, is a species of flowering plant in the family Proteaceae and is endemic to central-western Victoria, Australia. It is a shrub with divided leaves with 5 to 15 lobes, the end lobes more or less triangular to narrowly oblong and sharply-pointed, and clusters of greenish to fawn and dull purplish flowers.
Dipteronia sinensis is a plant species in the genus Dipteronia, endemic to mainland China, and regarded in the soapberry family Sapindaceae sensu lato after Angiosperm Phylogeny Group and more recently ), or traditionally by several authors in Aceraceae, related to the maples.
Kadua coriacea is a rare species of flowering plant in the coffee family known by the common name kioʻele. It is endemic to Hawaii, where it is known only from the island of Hawaiʻi and one individual remaining on Maui. It is a federally listed endangered species of the United States.
Dodonaea microzyga, commonly known as brilliant hopbush, is a dioecious spreading shrub in the family Sapindaceae. It grows between 0.3 and 1.5 metres tall.
Dodonaea procumbens, commonly known as trailing hop bush or creeping hop-bush, is a species of shrub in the genus Dodonaea found in eastern Australia. It occurs in many places in Australia such as South Australia, New South Wales and Victoria. Although the information on the abundance of this species is limited, it is estimated that about 5,000 plants occur in about 55 wild populations. The species is currently facing many threats such as the expansion of road facilities, the development of residential and agricultural areas, increased grazing regimes, weed invasions, and regimes changing of fire. As a result, it is listed as vulnerable and threatened. Therefore, it is necessary to provide protective solutions for the long-term development and survival of this species.
Acacia glandulicarpa, commonly known as the hairy-pod wattle, is a perennial shrub belonging to the genus Acacia and the subgenus Phyllodinea that is native to parts of south eastern Australia.
Calotis hispidula, commonly known as the Bogan flea or bindi eye, is a hairy species of daisy found in many parts of mainland Australia. It is a small herbaceous plant growing up to 10 centimetres tall, with white flowers that are often seen in the winter months. The specific epithet hispidula refers to the plant's covering of stiff hairs.
Dodonaea subglandulifera, commonly known as Peep Hill hop-bush, is a species of plant in the family Sapindaceae and is endemic to South Australia. It is a small, upright shrub with flowers in small groups that are yellow-greenish to red-maroon.
Dodonaea stenozyga, commonly known as desert hop-bush, is a species of flowering plant in the family Sapindaceae and grows in southern parts of Australia. It is a small, upright shrub with small clusters of flowers and linear leaves.
Dodonaea amblyophylla is a species of plant in the family Sapindaceae and is endemic to the south-west of Western Australia. It is an erect shrub with simple, linear leaves, flowers in groups of four to six, usually with eight stamens, and capsules with three wings.