Eucalyptus dives
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Eucalyptus dives is a species ofthe myrtle family (Myrtaceae). It occurs in the southeast of New South Wales and in the east and south of Victoria and is called there "Peppermint", "Blue Peppermint" or "Broad-leaved Peppermint".
description
Appearance and leaf
Eucalyptus dives grows as a tree that can reach heights of up to 20 meters. The bark remains on the entire trunk and the larger branches, is gray to gray-brown and has short fibers. At the top of the tree, it is gray and peeled 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 dives is Heterophyllie ago. The leaves on young and middle-aged are sessile; only in adult specimens are they divided into a petiole and a leaf blade. On young specimens, the leaf blades are egg-shaped and matt gray-green or blue-green floured or frosted. On middle-aged specimens the opposite, matt gray-green or blue-green floured or frosted leaf blades with a length of about 12 cm and a width of about 7 cm ovate, straight, with entire margins. The leaf stalks on adult specimens are 10 to 16 mm long. The leaf blade, which is glossy green on the top and bottom, is 7 to 15 cm long and 1.6 to 3.3 cm wide - lanceolate to lanceolate, relatively thick, straight, has a rounded blade base and a blunt one or pointed top. 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, flower and fruit
On the side of an inflorescence stem with a length of 5 to 13 mm and a diameter of up to 3 mm in cross-section, with a round, angular or narrowly flattened inflorescence stem, more than eleven flowers stand together in a single inflorescence . The flower stalk is 2 to 5 mm long and stalk-round. The not blue-green floured or frosted flower buds are club-shaped with a length of 4 to 6 mm and a diameter of 2 to 4 mm. The sepals form a calyptra that remains in place until they bloom ( anthesis ). The smooth calyptra is conical, sometimes also beak-shaped, shorter than or as long as the smooth flower cup (hypanthium) and as wide as this. The flowers are white or creamy white.
The stalked fruit is hemispherical, conical, pear- or egg-shaped and three- to fourfold with a length and a diameter of 5 to 7 mm each. The disc is flat or raised, the fruit compartments are level with the rim.
Occurrence
The natural range of Eucalyptus dives is the coast and the Great Dividing Range in southeast New South Wales , predominantly south of Sydney , and east and south Victoria , east of Ballarat .
Eucalyptus dives thrives widely and locally in dry hard-leaved forests on low-nutrient, flat and stony soils and elevations.
Systematics
The first description of Eucalyptus dives carried out in 1843 by John Konrad Schauer in repertory Botanices Systematicae , Volume 2, 5, p 926. This type of material has the label " In Nova Cambriae australi Interiori (A. Cunn. Hb. No. 181/1822) " on. A synonym for Eucalyptus dives shower is Eucalyptus amygdalina var. Latifolia H.Deane & Maiden.
Natural hybrids forms Eucalyptus dives with Eucalyptus radiata subsp. radiata .
use
From the leaf of Eucalyptus dives is eucalyptus oil gained. Two chemotypes of oils are obtained:
- The piperitone chemotype has a peppermint-like taste and smell. Piperiton is distilled from it, which is used to produce artificial menthol . In Australia, this chemotype has been used since colonization, especially in connection with black tea to make "Billy Tea". Today most of this oil comes from the Transvaal province of South Africa , where Eucalyptus dives is grown commercially. This chemotype is meant if no further information is given.
- The cineole chemotype is genus-specific and is harvested and distilled commercially. In Eucalyptus dives this chemotype occurs rather rarely, the main sources being Eucalyptus globulus and Eucalyptus radiata .
Individual evidence
- ↑ a b c Specimen search results: Eucalyptus dives at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved April 11, 2013
- ↑ a b c d APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Last accessed on May 29, 2013
- ↑ a b c d e f g h i j k l m K. Hill: Eucalyptus dives (showers) at New South Wales Flora Online . National Herbarium of NSW, Royal Botanic Garden, Sydney. Last accessed on May 29, 2013
- ↑ a b c d e f g h i j k l m n o p q r s t u v Eucalyptus dives at EucaLink - A Web Guide to the Eucalypts . Last accessed on May 29, 2013
- ↑ Entry in Tropicos . Retrieved April 11, 2013
- ↑ a b Rafaël Govaerts (Ed.): Eucalyptus dives. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved May 29, 2013.
- ^ Alan Bridson Cribb, Joan Winifred Cribb: Useful Wild Plants in Australia. Collins Sydney et al. 1982, ISBN 0-00-636397-0 , p. 23. The author had the source in the en-Wikipedia.
- ^ GC Analysis - Eucalyptus dives essential oil . New Directions Aromatics ( Memento of the original from March 24, 2012 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. Retrieved April 11, 2013
- ^ GC Analysis - Eucalyptus essential oil . New Directions Aromatics ( Memento of the original from March 24, 2012 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. Retrieved April 11, 2013
- ^ GC Analysis - Eucalyptus radiata essential oil . New Directions Aromatics ( Memento of the original from March 24, 2012 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. Retrieved April 11, 2013
