Eucalyptus dumosa
Eucalyptus dumosa
Eucalyptus dumosa is a flowering plant in the myrtle family ( Myrtaceae ). It occurs in central and southern New South Wales, in the center-west of Victoria, as well as in the southeast and south by South Australia before and is there " Bunurduck ", " Congoo Mallee ", " dumosa Mallee ", " Waikerie Mallee " " called Weir Mallee "or " White Mallee ".
Description
Appearance and leaf
Eucalyptus dumosa grows as a tree or in the habit of Mallee Eucalyptus, this is a habit that is more shrub-like than tree-like, there are usually multiple strains available that form a Lignotuber; there are growth heights of up to 8 meters, sometimes 12 meters, achieved. The bark is smooth on the whole tree, white, gray or yellow up and peels off in long strips. The bark of young branches is green. Both in the marrow of the young branches as well as in the bark, there are oil glands.
In Eucalyptus dumosa is available Heterophyllie. The leaves are always divided into petiole and leaf blade. In young specimens the leaf blade is ovate and dull gray - green. At middle-aged specimens, the dull gray - green leaf blade is ovate with a length of about 14 cm and a width of about 6 cm, straight and entire. The on top and bottom of the same color dull gray - green leaf blade of adult specimens is lanceolate with a length of 7 to 10 cm and a width of 1 to 2 cm, relatively thick, straight, entire, tapering to the Spreitenbasis and has a pointed upper end. The barely visible lateral nerves go off at an acute angle from the midrib. The cotyledons ( cotyledons ) are wrong - kidney-shaped.
Inflorescence and flower
Page Constantly on a 10 to 16 mm long, terete in cross section or angular inflorescence stem stand together seven to eleven flowers in a simple inflorescence. The peduncle is terete with a length of 1 to 3 mm. The non- blue-green floured or frosted flower buds are cylindrical with a length of 5 to 10 mm and a diameter of 4 to 5 mm, ovoid or spindle-shaped. The sepals form a calyptra, which drops early. The ribbed or striped calyptra conical, hemispherical or sometimes beaked, shorter than and as wide as the smooth flower cup ( hypanthium ). The flowers are white or off- white. The flowering period extends from late summer to mid-autumn.
Fruit and seeds
The fruit is more or less cylindrical or oval ribbed with a length of 6 to 9 mm and a diameter of 5 to 7 mm. The disc is pressed or flat, the fruit trays are at the height of the edge or stand out easily.
The seeds are red.
Occurrence
The natural range of Eucalyptus dumosa is the center and the west of New South Wales west of West Wyalong and south of Louth. To the south of Gilgandra there is an isolated population. Eucalyptus dumosa also occurs in central and western Victoria and the southeast and south of South Australia.
Eucalyptus dumosa is one of the dominant species of the plant communities in Malleebuschland on red, wind-blown sand.
System
The first description of Eucalyptus dumosa was made in 1820 by John Oxley in Journal of Two Expeditions into the Interior of New South Wales, Volume 63, in obs. The specific epithet is derived from the Latin word dumosa " dumosus " for dwarf and refers to the reduced height. 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 dumosa var incrassata ( A.Cunn. J.Oxley ex ) Maiden, Eucalyptus muelleri Miq. and Eucalyptus lamprocarpa F.Muell. ex Miq.
Intergradationen of Eucalyptus dumosa with Eucalyptus and Eucalyptus cretata gysophila were found.
Use
From the leaf of Eucalyptus dumosa commercially cineolbasiertes eucalyptus oil is distilled.