Eucalyptus grandis
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55 meter high Eucalyptus grandis |
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| W. Hill ex Maiden |
Eucalyptus grandis is a plant from the genus of eucalypti ( Eucalyptus ). It isnative toeastern Australia and is called "Flooded Gum" there.
description
Appearance and leaf
Eucalyptus grandis grows as a large tree and reaches heights of up to 50 meters, occasionally up to 70 meters. The trunk is free of knots up to a height of 30 meters and can reach a diameter of up to 2 meters. The dead bark remains permanently on the tree up to a height of a few meters , above it is smooth, white or gray and comes off in short strips or flakes. The bark of the furrowed branches is greyish-white.
In Eucalyptus grandis there is heterophyllia . The dark green glossy leaves are divided into a petiole and a leaf blade. The first opposite and later alternately arranged leaves of young specimens have short petioles and thin, leathery, lanceolate to egg-shaped leaf blades. The alternate leaves of older specimens are stalked about 2 cm long and their leaf blades are lanceolate with a length of 10 to 16 (13 to 20 cm) and a width of 2 to 3 cm . There are small glands on both leaf surfaces.
In June 2014 the genome of Eucalyptus grandis was published.
Inflorescence, flower and fruit
The lateral, simple, golden inflorescences contain (three to ten) seven to eleven flowers. The 8 to 18 mm (1 to 1.5 cm) long inflorescence shafts are slender, flattened or angular. The pedicel-round flower stalks are 0 to 3 mm long.
The hermaphroditic, radial symmetry flowers are four to five-fold. The more or less frosted flower buds are egg-shaped with a length of 6 to 8 mm (8 to 10 mm) and a diameter of 4 to 5 mm. The hemispherical to conical “Calyptra” (also called “Operculum” see generic article Eucalyptus ) is about as long and wide as the inverted-conical to bell-shaped flower cup (Hypanthium). There are eight to ten stamens . The elongated anthers have glands and open longitudinally. The stylus is shorter than the stamens.
The gray, four- to five-fan fruits are conical to pear-shaped (pyriform) with a length of 5 to 8 mm and a diameter of 4 to 7 mm, whereby the fans at the upper end of the fruit protrude from the flower cup.
distribution
Eucalyptus grandis is originally native to Queensland and New South Wales and is found in damp forests and on the edge of rainforests. In Queensland, Eucalyptus grandis hybridizes with Eucalyptus pellita (Henderson, 2002).
As a plantation tree, Eucalyptus grandis is tropical and subtropical outside of Australia, including in Africa, South America and India.
use
Eucalyptus grandis is an important plantation tree and one of the most commercially important eucalyptus species. The wood can be used in many ways, including in boat and furniture construction, for ladders, sports equipment, and for the production of cellulose .
Individual evidence
- ↑ a b c d e f g Eucalyptus grandis in the New South Wales Flora Online .
- ↑ a b c D. Louppe: Timbers 1 Margraf, 2009, ISBN 978-3823615415 , p. 270.
- ↑ a b c d e f g h i j k l m n Eucalyptus grandis , p. 324 - same text online as the printed work , Jie Chen & Lyn A. Craven: Myrtaceae , In: Wu Zheng-yi, Peter H. Raven & Deyuan Hong (Eds.): Flora of China , Volume 13 - Clusiaceae through Araliaceae , Science Press and Missouri Botanical Garden Press, Beijing and St. Louis, 2007, ISBN 978-1-930723-59-7 .
- ^ Sven Günter: Silviculture in the Tropics , Volume 8 by Sven Günter, Michael Weber, Bernd Stimm (editor): Tropical Forestry , Springer, 2011. ISBN 978-3-642199-86-8 Google-Book online. - Eucalyptus grandis from p. 463
- ↑ Alexander A. Myburg et al .: The genome of Eucalyptus grandis. In: Nature . Volume 510, No. 7505, 2014, pp. 356-362, doi: 10.1038 / nature13308
- ↑ Eucalyptus grandis in the Australian Plant Name Index = APNI.
