Eucalyptus scoparia
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Eucalyptus scoparia |
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| Maiden |
Eucalyptus scoparia is a species ofthe myrtle family (Myrtaceae). It occurs in the extreme northeast of New South Wales and in the extreme southeast of Queensland , in the area of the Great Dividing Range , and is called "Wallangarra White Gum" or "Willow Gum" there.
description
Appearance and leaf
Eucalyptus scoparia grows as a tree that can reach heights of up to 15 meters. The bark is smooth and powdery white or gray all over the tree. There are oil glands both in the pith of the young twigs and in the bark.
In Eucalyptus scoparia is Heterophyllie ago. The leaves on young and middle-aged specimens are sessile; only in adult specimens are they divided into a petiole and a leaf blade. The leaves on young specimens are linear and glossy green. On middle-aged specimens opposite leaves are ovoid to circular, straight, with entire margins and matt gray-green. The leaf stalks on adult specimens are narrowly flattened or channel-shaped. The leaf blade on adult specimens is glossy green or dull green in the same color on the top and bottom and is linear to narrow-lanceolate with a length of up to 15 cm and a width of about 1 cm, relatively thin, crescent-shaped, tapering towards the base of the blade and has a pointed or pointed upper end. The side nerves, which are barely visible, extend from the middle nerve at a very acute angle. The cotyledons ( cotyledons ) are wrong kidney-shaped.
Inflorescence, flower and fruit
On the side of an inflorescence stem with a length of 5 to 10 mm and a width of up to 3 mm in cross-section narrowly flattened or angular inflorescence stem stand together in a simple inflorescence about seven flowers. With a length of 4 to 5 mm and a diameter of 1.5 to 2 mm, the flower buds are egg-shaped or cylindrical and not floured or frosted blue-green. The sepals form a calyptra that falls off early. The smooth calyptra is conical, as long and as wide as the smooth flower cup (hypanthium). The flowers are white or creamy white.
The fruit is egg-shaped with a length of 5 to 7 mm and a diameter of 5 to 8 mm. The disc is raised, the fruit fans stick out.
Occurrence and endangerment
The natural range of Eucalyptus scoparia is the Great Dividing Range in the extreme northeast of New South Wales and in the adjacent extreme southeast of Queensland .
Eucalyptus scoparia is classified in New South Wales as "endangered" = "critically endangered".
Taxonomy
The first description of Eucalyptus scoparia was made in 1905 by Joseph Maiden entitled Miscellanous Notes (chiefly Taxonomic) on Eucalyptus in Proceedings of the Linnean Society of New South Wales , Volume 29, Issue 4, p 777. This type of material has the caption " On the tops of the highest hills (approx. 4000 ft.) in fissures of granite rocks around Wallangarra, occuring on both sides of the New South Wales - Queensland border (JLBoorman; July 1904) ”.
Individual evidence
- ↑ a b Specimen search results: Eucalyptus scoparia at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved April 5, 2013
- ↑ a b c APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved April 5, 2013
- ↑ a b c d e f g h i j k l m n o K. Hill: Eucalyptus scoparia (Maiden) at New South Wales Flora Online . National Herbarium of NSW, Royal Botanic Garden, Sydney. Retrieved April 5, 2013
- ↑ a b c d e f g h i j k l m Eucalyptus scoparia at EucaLink - A Web Guide to the Eucalypts . Retrieved April 5, 2013.
- ↑ Eucalyptus scoparia at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed April 5, 2013.
- ↑ Rafaël Govaerts (Ed.): Eucalyptus scoparia. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved April 5, 2013.
