Eucalyptus dumosa

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Eucalyptus dumosa
Eucalyptus dumosa.jpg

Eucalyptus dumosa

Systematics
Order : Myrtle-like (Myrtales)
Family : Myrtle family (Myrtaceae)
Subfamily : Myrtoideae
Tribe : Eucalypteae
Genre : Eucalyptus ( eucalyptus )
Type : Eucalyptus dumosa
Scientific name
Eucalyptus dumosa
A. Cunn. ex J. Oxley

Eucalyptus dumosa is a species ofthe myrtle family (Myrtaceae). It occurs in the center and in the south of New South Wales , in the center and in the west of Victoria , as well as in the south-east and in the south of South Australia and is there "Bunurduck", "Congoo Mallee", "Dumosa Mallee", "Waikerie Mallee" "," Weir Mallee "or" White Mallee "called.

description

Stalked leaves and inflorescences with open flowers and flower buds

Appearance and leaf

Eucalyptus dumosa grows as a tree or in the form of the Mallee - eucalyptus , this is a growth form that is more shrub -like than tree-shaped , there are usually several trunks that form a lignotuber ; heights of up to 8 meters, occasionally even 12 meters, are reached. The bark is smooth, white, gray or yellow all over the tree and peels in long ribbons. The bark of the young twigs is green. There are oil glands both in the pith of the young twigs and in the bark.

In Eucalyptus dumosa , heterophyllia is present. The leaves are always divided into a petiole and a leaf blade. The leaf blade on young specimens is ovate and dull gray-green. On medium-old specimens, the dull gray-green leaf blade is ovate, straight and with entire margins, with a length of about 14 cm and a width of about 6 cm. The leaf blade of the same color on the upper and lower side on adult specimens is lanceolate, 7 to 10 cm long and 1 to 2 cm wide, relatively thick, straight, with entire margins, tapers towards the base of the blade and is pointed top end. The side nerves, which are barely visible, extend from the median nerve at an acute angle. The cotyledons ( cotyledons ) are upside-kidney-shaped.

Inflorescence and flower

Lateral on a 10 to 16 mm long and in cross-section pedunculate or angular inflorescence stem are seven to eleven flowers together in a simple inflorescence . The flower stalk is 1 to 3 mm long and round. The not blue-green floured or frosted flower buds are cylindrical, ovoid or spindle-shaped with a length of 5 to 10 mm and a diameter of 4 to 5 mm. The sepals form a calyptra that falls off early. The ribbed or striped calyptra is conical, hemispherical or sometimes beak-shaped, shorter than and as wide as the smooth flower cup (hypanthium). The flowers are white or creamy white. The flowering period extends from late summer to mid-autumn.

Fruit and seeds

The fruit is cylindrical or ovoid and more or less ribbed with a length of 6 to 9 mm and a diameter of 5 to 7 mm. The disc is indented or flat, the fruit compartments are level with the edge or protrude slightly.

The seeds are red.

Main distribution area

Occurrence

The natural range of Eucalyptus dumosa is the center and west of New South Wales west of West Wyalong and south of Louth . There is an isolated population south of Gilgandra . Eucalyptus dumosa is also found in central and western Victoria and in the southeast and south of South Australia .

Eucalyptus dumosa is one of the dominant species of plant communities in the Mallee bush on red, blown sand .

Systematics

The first description of Eucalyptus dumosa was made in 1820 by John Oxley in the Journal of Two Expeditions into the Interior of New South Wales , Volume 63, in obs. The specific epithet dumosa is derived from the Latin word "dumosus" for dwarfish and refers to the low stature. Synonyms for Eucalyptus dumosa A.Cunn. ex J.Oxley are Eucalyptus dumosa A.Cunn. ex J. Oxley subsp. dumosa nom. inval., Eucalyptus dumosa A. Cunn. ex J.Oxley var. dumosa , Eucalyptus incrassata var. dumosa (A.Cunn. ex J.Oxley) Maiden, Eucalyptus muelleri Miq. and Eucalyptus lamprocarpa F. Muell. ex Miq.

Intergradations of Eucalyptus dumosa with Eucalyptus cretata and Eucalyptus gysophila were found.

use

Commercially cineol-based eucalyptus oil is distilled from the leaves of Eucalyptus dumosa .

Individual evidence

  1. ↑ a b c Specimen search results: Eucalyptus dumosa at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved April 11, 2013
  2. ↑ a b c d APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved April 11, 2013
  3. ↑ a b c d e f g h i j k l m K. Hill: Eucalyptus dumosa (A. Cunn. Ex J. Oxley) at New South Wales Flora Online . National Herbarium of NSW, Royal Botanic Garden, Sydney. Last accessed on May 29, 2013
  4. ↑ MIH Brooker & DA Kleinig: Field Guide to Eucalypts . Bloomings, Melbourne 2001. The author had the source in the en-Wikipedia, but not when this article was edited, statements have not been checked.
  5. ↑ a b Entry in Tropicos . Retrieved April 11, 2013
  6. ↑ Rafaël Govaerts (ed.): Eucalyptus dumosa. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved April 11, 2013.
  7. ↑ DJ Boland & JJ Brophy & APN House: Eucalyptus Leaf Oils . 1991. p. 6. ISBN 0-909605-69-6 . The author had the source in the en-Wikipedia.

Web links

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