Eucalyptus paniculata
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Eucalyptus paniculata |
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Eucalyptus paniculata is a species ofthe myrtle family (Myrtaceae). It occurs on the central and northern coastline of New South Wales and is called "Gray Ironbark" there.
description
Appearance and leaf
Eucalyptus paniculata grows as a tree that can reach heights of up to 30 meters. The bark remains on the entire tree, is gray-black and rounded lengthways. The bark of the small branches is green. In Mark the young twigs oil glands may be present in the bark not.
In Eucalyptus paniculata , heterophyllia is present. The leaves are always divided into a petiole and a leaf blade. The leaf blades on seedlings are green on top and bottom and are ovate, 4 to 8 cm long and 3 to 5.5 cm wide. On young specimens, the leaf blades are glossy to dull green in different colors on the top and bottom, 8 to 16 cm long and 3.3 to 6 cm wide, ovate to broadly lanceolate. On medium-old specimens, the glossy to dull green leaf blade is 10 to 19 cm long and 2.4 to 4.3 cm wide and lanceolate to broadly lanceolate or ovate, straight and with entire margins. The leaf stalks on adult specimens are narrowly flattened or channel-shaped with a length of 13 to 22 mm. The leaf blades on adult specimens are silky-green in different colors on the top and bottom and are 8 to 15 cm long and 1.2 to 3 cm wide, lanceolate to lanceolate, relatively thick, sickle-shaped, and tapering towards the base of the blade the upper end can be pointed or blunt. The raised lateral nerves branch off from the median nerve at medium intervals at an acute angle. The cotyledons ( cotyledons ) are upside-kidney-shaped.
Inflorescence and flower
At the end or on the side of an inflorescence stem with a length of 6 to 15 mm and a diameter of up to 3 mm in cross-section, with a narrow flattened or angular inflorescence stem, there are approximately seven-flowered partial inflorescences in compound total inflorescences . The pedicels are 2 to 10 mm in length with round or angular stems. With a length of 7 to 9 mm and a diameter of 3 to 5 mm, the flower buds are egg-shaped or short spindle-shaped and not floured or frosted blue-green. The sepals form a calyptra that falls off early. The smooth calyptra is conical or hemispherical, shorter than or as long as the smooth flower cup (hypanthium) and narrower than this. The flowers are white or creamy white. The flowering period extends from May to February.
Fruit and seeds
With a length of 6 to 9 mm and a diameter of 3 to 5 mm, the stalked fruit is conical, inverted-conical, hemispherical, egg or pear-shaped, finely ribbed and four- to five-fan. The disc is indented or flat, the fruit compartments are enclosed or at the level of the rim.
The brown seeds are egg-shaped and slightly flattened. The hilum sits in the middle.
Occurrence
The natural range of Eucalyptus paniculata is the northern and central coastline of New South Wales , from Narooma to Coffs Harbor .
Eucalyptus paniculata often grows locally in moist forests on deeper, very fertile soils .
Taxonomy
The first publication of Eucalyptus paniculata was made in 1797 by James Edward Smith titled 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 ”. Synonyms for Eucalyptus paniculata Sm. Are Eucalyptus fergusonii RTBaker subsp. fergusonii , Eucalyptus nanglei RTBaker and Eucalyptus paniculata subsp. matutina LASJohnson & KDHill. The specific epithet paniculata is derived from the Latin word paniculatus for paniculate and refers to the inflorescence.
use
The heartwood of Eucalyptus paniculata is brown or reddish brown, stable and has a specific weight of 1000 to 1185 kg / m³. The wood from Eucalyptus paniculata is used as heavy construction timber to make posts, railroad ties , cross braces and heavy floors .
Individual evidence
- ↑ a b Specimen search results: Eucalyptus paniculata at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved April 15, 2013
- ↑ a b c APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved April 15, 2013
- ↑ a b c d e f g h i j k l m n K. Hill: Eucalyptus paniculata (Sm.) At New South Wales Flora Online . National Herbarium of NSW, Royal Botanic Garden, Sydney. Retrieved April 15, 2013
- ↑ a b c d e f g h i j k l m n o p q r s t Eucalyptus paniculata at EucaLink - A Web Guide to the Eucalypts . Retrieved April 15, 2013.
- ↑ a b c d e f g h i j k l m n o p Gray Ironbark - Eucalyptus paniculata in: DJ Boland, MIH Brooker, GM Chippendale, N. Hall, BPM Highland, RD Johnston, DA Kleinig, MW McDonald & JD Turner (Editor): Forest Trees of Australia . CSIRO Publishing. 5th Edition 2006. pp. 496-497 at Google Books . Retrieved April 15, 2013
- ↑ Eucalyptus paniculata at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed April 15, 2013.
- ↑ Rafaël Govaerts (ed.): Eucalyptus paniculata. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved April 15, 2013.
