Eucalyptus olida
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Eucalyptus olida |
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| LASJohnson & KDHill |
Eucalyptus olida is a species ofthe myrtle family (Myrtaceae). It occurs in the northern table country in northeast New South Wales and is called "Manna Gum" there.
description
Appearance and leaf
Eucalyptus olida grows as a tree that reaches heights of up to 20 meters. The bark remains on the entire trunk and the larger branches, is gray to gray-brown and fibrous to short-fibred. At the top of the tree, it is white or gray and peels in long ribbons. The bark of the small branches is green. There are no oil glands in the marrow of the young branches or in the bark.
In Eucalyptus Olida is Heterophyllie ago. The leaves are always divided into a petiole and a leaf blade. On young specimens, the matt gray-green leaf blade is egg-shaped with a length of about 7 cm and a width of about 5 cm. On middle-aged specimens the dull gray-green leaf blade is also ovate, curved sickle-shaped and with entire margins. The petiole on adult specimens is narrowly flattened or channel-shaped. The leaf blade of the same color on the top and bottom of the adult specimens is semi-glossy or glossy green, with a length of 8 to 17 cm and a width of 1.2 to 2.6 cm broadly lanceolate, relatively thick, curved sickle-shaped, tapers to the base of the blade and has a pointed upper end. The raised lateral nerves extend from the median nerve at large intervals at an acute or very acute angle. The cotyledons ( cotyledons ) are kidney-shaped.
Inflorescence and flower
On the side of a stalk with a length of 8 to 18 mm and a diameter of up to 3 mm in cross section, narrowly flattened or angular inflorescence stem, seven to eleven or more flowers stand together in a simple inflorescence . The 2 to 6 mm long flower stalks are stalk-round. The not blue-green floured or frosted flower buds are club-shaped with a length of 3 to 5 mm and a diameter of 2 to 3 mm. The sepals form a calyptra that remains in place until flowering ( anthesis ). The smooth calyptra is hemispherical, shorter than or as long as the smooth flower cup (hypanthium) and as wide as this. The flowers are white or creamy white.
fruit
With a length of 5 to 8 mm and a diameter of 5 to 7 mm, the stalked fruit is conical, hemispherical or pear-shaped and four- to five-fan. The disc is flat, the fruit compartments are enclosed or level with the rim.
Occurrence and endangerment
The natural range of Eucalyptus olida is the area from the Timbarra Plateau to the Gibraltar Range in northeast New South Wales , which includes the Timbarra , Washpool and Gibraltar Range national parks .
Eucalyptus olida in a few places, but often there, in dry hard- leaved forest or light forest on flat, sterile soils over acid granite .
Eucalyptus olida was designated in 1998 in the IUCN Red List as a “rare” species. According to the ROTAP coding system 2RCa ("2 - It has a range covering less than 100 km; R - Rare in the wild but with no current identifiable threat. Rare in the wild but with no current identifiable threat" is in the Threatened Flora Lists of the Australian Native Plants Society (Australia) = ANPSA ; Ca - Occurs within proclaimed reserves and the known population exceeds 1000 plants ").
Taxonomy
The first description of Eucalyptus Olida was made in 1990 by Lawrence Alexander Sidney Johnson and Kenneth D. Hill under the title New taxa and Combinations in Eucalyptus and Angophora (Myrtaceae) in Telopea , Volume 4, Issue 1, p 103. The type material has the caption " NEW SOUTH WALES: Northern Tablelands: 4.2 km from the Gwydir Highway on the north-west fire trail, Gibraltar Range Natl. Park (29 ° 31'S 152 ° 15'E) ”.
use
From the leaves of eucalyptus olida are essential oils distilled , which are used as flavor and fragrance, also in the perfume industry. At 98%, the leaves have a very high methyl cinnamate content . The oil content is also very high at 2 to 6%.
The dried leaves are also used as a spice in bush food cooking , especially with fruit and in herbal teas. The leaves act as a powerful antioxidant .
Individual evidence
- ↑ a b Specimen search results: Eucalyptus olidai 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 o p q r s t K. Hill: Eucalyptus olida (LASJohnson & KDHill) 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 u v w Eucalyptus olida at EucaLink - A Web Guide to the Eucalypts . Retrieved April 15, 2013.
- ↑ Kerry Scot Walter, Harriet J. Gillett: 1997 IUCN Red List of Threatened Plants. 1998, ISBN 2-8317-0328-X , p. 424: Magnoliobsida (dicots): Myrtaceae: Eucalyptus.
- ↑ Eucalyptus olida at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed April 15, 2013.
- ↑ Rafaël Govaerts (ed.): Eucalyptus olida. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved April 15, 2013.
- ↑ DJ Boland, JJ Brophy: Eucalyptus Leaf Oils . 1991, ISBN 0-909605-69-6 . The author had the source in the en-Wikipedia.
- ^ J. Zhao, S. Agboola: Functional Properties of Australian Bushfoods - A Report for the Rural Industries Research and Development Corporation . ( Memento of the original from September 21, 2009 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. 2007. RIRDC Publication No 07/030. (PDF; 1.1 MB) Retrieved April 15, 2013
