Acacia maidenii
Acacia maidenii, phyllodes and inflorescences
Acacia maidenii is a species of the subfamily of the mimosa family ( Mimosoideae ). It is native to the east coast of Australia.
- 5.1 Notes and references
Description
Vegetative characteristics
Acacia maidenii grows as an upright or branched, evergreen large shrub or tree that can reach heights of growth from 5 to 20 meters. The dark gray to gray - brown bark is smooth in young trees and is deeply fissured with age. The light brown or gray bark of the branches is edged sparsely hairy to glabrous and has raised lenticels on.
The more or less strongly curved like a sickle to sometimes more or less straight, parchment-like to thin leathery phyllodes are very narrowly elliptic, elliptic, with a length of 7 to rare usually 10 to 20 centimeters and a width of usually 0.6 to 2.5 centimeters to oblong - obovate. The leaf base and in most cases the leaf edges are sparsely hairy. The leaf tip is pointed to nearly pointed. On the Phyllodium to one to five elevated, longitudinal veins of which are branched off many smaller nerves. Near the leaf base, about 0.6 to 1 centimeter above the 0.1 to 0.25 inches long pulvinus, there is an inconspicuous leaf gland.
Generative features
The heyday of Acacia maidenii is from January to June. The 2.5 to 6 centimeters long, aged men inflorescences contain many loosely arranged flowers. The white or yellowish hairy inflorescence stems are 0.5 to 4 millimeters long.
The pale yellow flowers are usually fourfold radial symmetry with a double perianth. The four most densely fluffy hairy sepals are 0.4 to 0.6 millimeters long and grown to three-quarters to two-thirds of its total length. The most four bald petals are 1.2 to 1.7 millimeters long and grown on one-half to one-third of their total length. The only carpel is densely hairy.
The twisted up to a loose spiral striped, leathery, longitudinally furrowed legumes are hairy bald or sparse. They are nearly cylindrically shaped with a length of 5-15 centimeters and a thickness of 0.2 to 0.5 centimeters. The dark brown with a slightly reddish tinge seeds are oblong to broadly elliptical, with a length of 4 to 5.5 millimeters. The aril is cup-shaped.
Occurrence
The natural range of Acacia maidenii is located on the coastal regions of eastern Australia. It extends there from Proserpine in Queensland in the north southwards to Orbost in Victoria. To the west it extends to the 148th degree of longitude. Acacia maidenii is a neophyte in Argentina, South Africa and in the Indian state of Tamil Nadu.
Acacia maidenii grows mainly on more fertile soils which have formed over basalt. Acacia maidenii thrives mainly on the edges of coastal rainforests.
Terms and herbal ingredients
Acacia maidenii suitable for planting as a street tree.
The researchers Fitzgerald and Sioumis showed in 1965 that the bark contains about 0.6 percent of hallucinogenic dimethyltryptamine and N- methyltryptamine. This was the first detection of these substances in a " acacia ". Clark - Lewis and Dainis showed 1967, the extract from the heartwood 7,8,4? - Trihydroxyflavonol, Teracacidin and trans-4- hydroxy-L- pipecolic acid contains.
System
The first description of Acacia maidenii was made in 1892 by Ferdinand von Mueller in Central Botanical Journal, volume 51, page 398 A synonym for Acacia maidenii F.Muell. is Racosperma maidenii ( F.Muell. ) Pedley. The specific epithet honors the maidenii British- Australian botanist Joseph Maiden.
At the close of Acacia maidenii related species include Acacia floribunda, the Langblättrige acacia ( Acacia longifolia) and Acacia longissima from which they can be distinguished by the conspicuous lenticels of Two Grinde and yellowish trichomes of Blütenstandsschäfte.
Swell
- Flora of Australia, Volume 11, 2001) and 12, 1998: Acacia maidenii. In: Flora of Australia Online. www.anbg.gov.au, accessed on March 2, 2014 ( English).
- (last edited May PG Kodela: Acacia maidenii In: . Flora of New South Wales Online www.plantnet.rbgsyd.nsw.gov.au, 2012, accessed on March 2, 2014 ( English). .