Eucalyptus scoparia
Eucalyptus scoparia
Eucalyptus scoparia is a species of plant in the myrtle family ( Myrtaceae ). It comes in the extreme north-east of New South Wales and in the extreme southeast of Queensland in the area of the Great Dividing Range, before and is there " Wallangarra White Gum " or " Willow Gum" called.
Description
Appearance and leaf
Eucalyptus scoparia grows as a tree reaching heights of growth of up to 15 meters. The bark is smooth on the whole tree and powdery white or gray. Both in the marrow of the young branches as well as in the bark, there are oil glands.
In Eucalyptus scoparia is available Heterophyllie. The leaves of young and middle-aged specimens are sitting; only in adult specimens are divided into petiole and leaf blade. In young specimens the leaves are linear and shiny green. At middle-aged specimens against permanent leaves oval to circular, straight, entire, dull and gray-green. The petioles of adult specimens are narrow flattened or channel-shaped. The on top and bottom of the same color glossy green or dull green leaf blade of adult specimens is linear to narrow - lanceolate, relatively thin, curved like a sickle with a length of 15 cm and a width of about 1 cm, tapers toward the Spreitenbasis and has a sharp or pointed upper end. The barely visible lateral nerves go off at a very acute angle from the midrib. The cotyledons ( cotyledons ) are wrong kidney-shaped.
Inflorescence, flower and fruit
Constantly on a page with a length of 5 to 10 mm and a width of up to 3 mm in cross section, narrow flattened or angular inflorescence stem are in a simple inflorescence about seven flowers together. The flower buds are ovoid or cylindrical with a length of 4 to 5 mm and a diameter of 1.5 to 2 mm and not blue green flour dusted or frosted. The sepals form a calyptra, which drops early. The smooth calyptra conical, as long and as wide as the smooth flower cup ( hypanthium ). The flowers are white or off- white.
The fruit is oval with a length of 5 to 7 mm and a diameter of 5 to 8 mm. The discus is raised, the fruit of subjects stand out.
Occurrence and risk
The natural range of Eucalyptus scoparia is the Great Dividing Range in the extreme north-east of New South Wales and the adjacent extreme southeast of Queensland.
Eucalyptus scoparia is in New South Wales as "endangered " = classified as " critically endangered ".
Taxonomy
The first description of Eucalyptus scoparia was made in 1905 by Joseph Maiden under the title Miscellanous Notes ( chiefly Taxonomic ) on Eucalyptus in Proceedings of the Linnean Society of New South Wales, Volume 29, Issue 4, pp. 777 The type material has the caption "On the tops of the highest hills (about 4000 ft. ) in fissures of granite rocks around Wallangarra, occuring on bothsides of the New South Wales - Queensland border ( JLBoorman; July 1904) "on.