Eucalyptus populnea
Eucalyptus populnea
Eucalyptus populnea is a flowering plant in the myrtle family ( Myrtaceae ). It occurs in central and western New South Wales as well as in the center, in the south, southeast and east of Queensland before and is there " Bimbil ", " Bimbil Box ", " Bimble Box ", " Poplar Box ", " Poplar called -leaved box ", " Round -leaf box " Shiny -leaf box ," " White Box ", " Red Box ", " Egolla " or " Nankeen Gum".
Description
Appearance and leaf
Eucalyptus populnea grows as a tree reaching heights of growth of up to 20 meters. The bark remains on the entire trunk and larger branches, gray with whitish spots and fibrous integrally. On the upper parts of the tree it is smooth, shiny gray and peels in short ribbons. The bark of young branches is green. Neither in the marrow of the young branches still in the bark, there are oil glands.
In Eucalyptus populnea is available Heterophyllie. The leaves are always divided into petiole and leaf blade. The leaf blade of seedlings is at a length of 4 to 10 cm and a width of 1.4 to 5.5 cm, elliptic to ovate and the same color on top and bottom green. In young specimens the leaf blade is oval to circular and dull gray - green or bright green, with a length from 4.5 to 11.5 cm and a width of 4 to 9.5 cm. At middle-aged specimens, the leaf blade is elliptic at a length of 7 to 16 cm and a width of 3 to 6 cm, ovoid or circular, straight, entire, dull and gray-green. The petioles of adult specimens are 15-20 mm long. The leaf blades of adult specimens with the same color glossy green upper and lower sides are elliptical with a length of 5 to 11 cm and a width of 2-7 cm, oval or diamond-shaped, relatively thick, straight, have a rounded Spreitenbasis and a pointed or blunt upper end. The raised lateral nerves go at large distances from an acute angle from the midrib. The cotyledons ( cotyledons ) are wrong - kidney-shaped.
Inflorescence and flower
End or pendant on a terete at a length of 5 to 11 mm in cross section inflorescence stem are about seven to elfblütige or fünfzehnblütige part inflorescences in total composite inflorescences. Where available, the 1 to 3 mm long flower stems are terete. The flower buds are club- to egg-shaped and not floured blue green with a length of 3 to 5 mm and a diameter of 2 to 3 mm or frosted. The sepals form a calyptra, which drops early. Smooth Calyptra is hemispherical to conical, shorter than the length of the smooth flower cups ( Hypanthium ) and as wide as these. The flowers are white. All stamens are fertile ( fertile ). The flowering period extends from February to March.
Fruit and seeds
The pedicle or sometimes seated fruit is hemispherical or conical and vierfächrig at a length of 2 to 4 mm and a diameter of 2 to 5 mm. The disc is pressed, the fruit trays are at the height of the edge or protrude.
The brown or gray seed is compressed and often ovoid pointed at one end. The hilum is centered.
Occurrence
The natural range of Eucalyptus populnea is the center and the west of New South Wales west of the Great Dividing Range, as well as the center, the south, the south-east and the east of Queensland.
Eucalyptus populnea is widespread and often dominant in grassy, open forests on moderately fertile before, loamy soils.
System
The first description of Eucalyptus populnea in 1859 by Ferdinand von Mueller, entitled Monograph of the Eucalypt of tropical Australia in the Journal of the Proceedings of the Linnean Society, Botany, Volume 3, page 93 The epithet populnea is from the Latin word " populneus " derived for poplar similar, indicating the form in particular of youth leaves. Synonyms for Eucalyptus populnea F.Muell. are: Eucalyptus populnea F.Muell. subsp. populnea, Eucalyptus populnea F.Muell. var populnea, Eucalyptus populnea subsp. bimbil LASJohnson & KDHill, Eucalyptus populifolia Hook. nom. illeg. , Eucalyptus populifolia Hook. nom. illeg. , Eucalyptus populifolia Hook. var populifolia.
Use
Eucalyptus populnea regarded as a good shade tree and is often planted as a protection for other plants.
The heartwood of Eucalyptus populnea is pale brown to dark brown with a reddish brown color, hard and very resistant. It has a specific gravity of 820-885 kg / m³. The wood of Eucalyptus populnea is used for the construction of fences.