Eucalyptus rubida
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Eucalyptus rubida |
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| H.Deane & Maiden |
Eucalyptus rubida is a species ofthe myrtle family (Myrtaceae). It occurs in the northern table country, in the east and southeast of New South Wales , in the east, in the south and in the center of Victoria as well as in the east and in the center of Tasmania and is there "Candlebark", "Candle Bark Gum", "Ribbon Gum" "Or" White Gum "called.
description
Appearance and leaf
Eucalyptus rubida grows as a tree that can reach heights of up to 40 meters. The bark is smooth on the entire tree or remains on the lower part of the trunk, where it sometimes peels irregularly. It is gray to gray-black, short-grained and flat. On the upper parts of the tree, it is smooth, powdery white, gray, red or pink in color and peels in long ribbons. The bark of the small branches is green. In Mark the young branches but there is no oil glands in the bark.
In Eucalyptus rubida is Heterophyllie ago. The leaves on seedlings are sessile, with a length of 2.5 to 3.5 cm and a width of 4 to 5 cm egg to circular, wider than long and gray-green or blue-green floured and frosted on the top and bottom of the same color . On young specimens, the leaves are also sessile, with a length of 3 to 14 cm and a width of 3 to 8 cm egg to circular and on top and bottom of the same color gray-green or blue-green floured and frosted. On middle-aged and adult specimens, the leaves are divided into a petiole and a leaf blade. On medium-old specimens, the leaf blade is 13 to 18 cm long and 2 to 4 cm wide and lanceolate to broadly lanceolate or circular, straight, with entire margins and blue-green floured and frosted. The leaf stalks on adult specimens are 13 to 30 mm long and narrowly flattened or channel-shaped. The leaf blades of the same color on the top and bottom of the adult specimens are dull green or gray-green and are 9 to 15 cm long and 0.8 to 3.3 cm wide, lanceolate to narrow-lanceolate, relatively thick, sickle-shaped, tapers towards the base of the blade and has a pointed upper end. The raised lateral nerves branch off from the median nerve at medium intervals at an acute angle. The cotyledons ( cotyledons ) are wrong kidney-shaped.
Inflorescence and flower
On the side of an inflorescence stem with a length of 3 to 8 mm and a diameter of up to 3 mm in cross-section narrowly flattened or angular inflorescence stem stand together in a simple inflorescence about three to seven flowers. The flower stalks, if present, are up to 3 mm long and stalk-round. The blue-green floured or frosted flower buds are egg-shaped or double-conical with a length of 4 to 8 mm and a diameter of 3 to 5 mm. The sepals form a calyptra that falls off early. The smooth calyptra is conical or hemispherical, as long or twice as long as the smooth flower cup (hypanthium) and narrower than this. The flowers are white or creamy white. The flowering period extends from January to April at the natural site.
Fruit and seeds
The seated or short-stalked fruit is 4 to 6 mm long and 4 to 7 mm in diameter hemispherical, almost spherical, cylindrical or egg-shaped and three to four-sided. The disc is indented or seldom flat, the fruit fans stick out. Occasionally the fruit is floured or frosted blue-green.
The black seeds are flattened ellipsoidal. The hilum sits in the middle.
Occurrence and endangerment
The natural range of Eucalyptus rubida is the northern table country , the east and southeast New South Wales , south of Glen Innes , as well as in the east, south and central Victoria and east and central Tasmania .
Eucalyptus rubida thrives widely and often in grassy or hardwood forests on moderately fertile soils on cold plateaus.
The subspecies Eucalyptus rubida subsp. Found in the north of New South Wales . barbigerorum is classified as "vulnerable" in the list of endangered flora of the government of Australia.
Systematics
The first description of Eucalyptus rubida was made in 1899 by Henry Deane and Joseph Maiden in Proceedings of the Linnean Society of New South Wales , Volume 24, p 456, Table XI. The type material has the inscription “ The mountain ranges in the south and south-eastern portions of the Colony. Occurs on the lower slopes of the Mt. Kosciusko range up to 5000 feet. Common about Jindabyne, Adaminaby, Delegate to Bombala and Cooma, Michelago, Queanbeyan; northerly nearly as far as Moss Vale; westerly as far as Sunny Corner and the tributaries of the Turon. Extends also to Victoria and South Australia (St. Vincent's Gulf). " on. A synonym for Eucalyptus rubida H.Deane & Maiden is Eucalyptus dalrympleana Maiden subsp. dalrympleana . The specific epithet rubida is derived from the Latin word "rubidus" for red and refers to the seasonal red spots on the bark.
Of eucalyptus rubida there are three subspecies (2008):
- Eucalyptus rubida subsp. barbigerorum L.ASJohnson & KDHill , Syn .: Eucalyptus canabolensis (LASJohnson & KDHill) JTHunter
- Eucalyptus rubida H. Deane & Maiden subsp. rubida , Syn .: Eucalyptus gunnii var. rubida (H.Deane & Maiden) Maiden
- Eucalyptus rubida subsp. septemflora L.ASJohnson & KDHill
use
The wood of Eucalyptus rubida is hard, but not durable, and has a specific weight of 550–737 kg / m³. It is occasionally used to build fences or as firewood. It is very similar to the wood of Eucalyptus viminalis .
Individual evidence
- ↑ a b c View Specimen search results: Eucalyptus rubida at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved April 18, 2013
- ↑ a b c APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved April 18, 2013
- ↑ a b c d e f g h i j k l m n o p q r K. Hill: Eucalyptus rubida (H.Deane & Maiden) at New South Wales Flora Online . National Herbarium of NSW, Royal Botanic Garden, Sydney. Retrieved April 18, 2013
- ↑ a b c d e f g h i j k l m n o p q r s t u v w Eucalyptus rubida at EucaLink - A Web Guide to the Eucalypts . Retrieved April 18, 2013.
- ↑ a b c d e f g h i j k l m n o p q r s t u Candlebark, Ribbon Gum, White Gum - Eucalyptus rubida in: DJ Boland, MIH Brooker, GM Chippendale, N. Hall, BPM Highland, RD Johnston, DA Kleinig, MW McDonald & JD Turner (editors): Forest Trees of Australia . CSIRO Publishing. 5th Edition 2006. pp. 432-433 at Google Books . Retrieved April 18, 2013
- ↑ Eucalyptus rubida subsp. Barbigerorum - Blackbutt Candelbark at EPBC Act List of Threatened Flora in Biodiversity - Species Profile and Threats Database. Department of Sustainability, Environment, Water, Population and Communities. Australian Government. Last accessed on May 4, 2013
- ↑ Eucalyptus rubida at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed April 18, 2013.
- ↑ a b Rafaël Govaerts (Ed.): Eucalyptus rubida. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved April 18, 2013.
