Eucalyptus paniculata
Eucalyptus paniculata
Eucalyptus paniculata is a plant in the myrtle family ( Myrtaceae ). It occurs in the central and northern coast of New South Wales, where it is called "Grey Ironbark ".
Description
Appearance and leaf
Eucalyptus paniculata grows as a tree reaching heights of growth of up to 30 meters. The bark remains on the entire tree is gray -black and along geschrundet. The bark of young branches is green. In the marrow of young twigs oil glands may be present in the bark not.
In Eucalyptus paniculata is available Heterophyllie. The leaves are always divided into petiole and leaf blade. The on top and bottom in different colors green leaf blades of seedlings are egg-shaped with a length of 4-8 cm and a width of 3 to 5.5 cm. Is to young specimens of the different colored shiny to dull green leaf blade with a length of 8 to 16 cm and a width of 3.3 to 6 cm, ovate to top and bottom, to broad - lanceolate. At middle-aged specimens the gloss to matt green leaf blade is at a length of 10 to 19 cm and a width of 2.4 to 4.3 cm lanceolate to broadly lanceolate or ovate, straight, entire. The petioles of adult specimens are narrow flattened or channel-shaped with a length of 13 mm to 22 mm. The on top and bottom in different colors are matt green leaf blades of adult specimens are broad - lanceolate to lanceolate, relatively thick, curved like a sickle with a length of 8 to 15 cm and a width of 1.2 to 3 cm, taper towards the Spreitenbasis and the upper end can be sharp or blunt. The raised lateral nerves go from average distances at an acute angle from the midrib. The cotyledons ( cotyledons ) are wrong - kidney-shaped.
Inflorescence and flower
End or laterally at one with a length of 6 to 15 mm and a diameter of up to 3 mm in cross section, narrow flattened or angular inflorescence stem are about siebenblütige partial inflorescences in total composite inflorescences. The flower stems are terete or angular with a length of 2 to 10 mm. The flower buds are oval or short spindle-shaped and not floured blue green with a length of 7 to 9 mm and a diameter of 3 to 5 mm or frosted. The sepals form a calyptra, which drops early. The smooth calyptra conical or hemispherical, shorter than or as long as the smooth flower cup ( hypanthium ) and narrower than this. The flowers are white or off- white. The flowering period extends from May to February.
Fruit and seeds
The stalked fruit is conical with a length of 6 to 9 mm and a diameter of 3 to 5 mm, reversed - conical, hemispherical, ovoid or pear-shaped, finely ribbed and four to fünffächrig. The disc is pressed or flat, the fruit or compartments are included at the level of the edge.
The brown seeds are flattened ovoid and light. The hilum is centered.
Occurrence
The natural range of Eucalyptus paniculata is the northern and central coast of New South Wales, from Narooma to Coffs Harbour.
Eucalyptus paniculata grows locally common in wet forests on deeper, more fertile soils.
Taxonomy
The first publication of Eucalyptus paniculata was made in 1797 by James Edward Smith, entitled Botanical Characters of Some Plants of the Natural Order of Myrti in Transactions of the Linnean Society of London, Volume 3, page 287 The type material has the caption "My specimens were Gathered at Port Jackson by Mr David Burton, and I received them from Sir Joseph Bank 's herbarium "on. Synonyms for Eucalyptus paniculata Sm are Eucalyptus fergusonii RTBaker subsp. fergusonii, Eucalyptus and Eucalyptus paniculata nanglei RTBaker subsp. matutina L.A.S.Johnson & K.D.Hill. The specific epithet is derived from the Latin word paniculata paniculatus for paniculate and refers to the inflorescence.
Use
The heartwood of Eucalyptus paniculata is brown or reddish brown, resistant and has a specific gravity of 1000-1185 kg / m³. The wood of Eucalyptus paniculata is used as a heavy timber for the production of poles, railroad ties, cross-ties and heavy soils.