Eucalyptus cambageana
Eucalyptus cambageana
Eucalyptus cambageana is a flowering plant within the myrtle family ( Myrtaceae ). It occurs in central and eastern Queensland, where it is " Blackbutt ," " Dawson River Blackbutt ," " Dawson Gum" or " Coowarra box" called.
Description
Appearance and leaf
Eucalyptus cambageana grows as a tree, reached the stature heights 15-25 meters and crown diameter 5-15 m. The bark remains on the lower part of the stem is gray, gray - black or black and fibrous integrally with whitish spots. Oil glands are available in both the bark and in the marrow of the young branches.
In Eucalyptus cambageana is available Heterophyllie. The leaves are always divided into petiole and leaf blade. In young and middle-aged specimens, the leaf blade is at a length of 8 to 15 cm and a width of 2.5 to 3.5 cm lanceolate to ovate, 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 dull gray - green leaves on adult specimens are bent narrow - lanceolate or lanceolate, falcate at a length of 10 to 18 cm and a width of 2 to 3 cm and relatively thick; they may be tapered to Spreitenbasis back or rounded there and its upper end may be acute or obtuse. The raised lateral nerves go off at an acute angle from the midrib. The cotyledons ( cotyledons ) are wrong kidney-shaped.
Inflorescence and flower
Terminally on a four-sided in cross-section of inflorescence stem are about three to siebenblütige partial inflorescences in total composite inflorescences. The flower buds are obovate or clavate and not blue green flour dusted or frosted. The sepals form a calyptra, which drops early. The smooth calyptra is hemispherical or conical, as long and as wide as the smooth flower cup ( hypanthium ). The flowers are white or off- white.
Fruit
The fruit is conical or pear-shaped. The disc is pressed, the fruit trays are included.
Occurrence
The natural range of Eucalyptus cambageana located in the center and east of Queensland.
Eucalyptus cambageana grows in the bush and in open woods along with " Brigalow " (Acacia harpophylla ), " Belah " ( Casuarina cristata ) and " Wilga " ( Geijera parviflora ). This sparse forests where Eucalyptus cambageana dominates along with " Brigalow ", can be found on clay soils, along water courses and sediments.
At the heart of Queensland, the occurrence of Eucalyptus cambageana is a sign for the salinization of the soil, which has negative effect on the yield of agricultural land.
Taxonomy
The first description of Eucalyptus cambageana was made in 1913 by Joseph Maiden under the title Notes on Eucalypts (with discriptions of new species) No. 1 in Journal and Proceedings of the Royal Society of New South Wales, Volume 47 ( 1), p 91 The type material has the label "Type from Mirtna Station, Charters Towers, Queensland (Miss Zara Clark, January and December 1912. ) "on. The specific epithet honors the cambageana Australian surveyor and botanist Richard Hind Cambage ( 1859-1928 ).
Use
The wood of Eucalyptus cambageana is very hard and is used for fence posts. Eucalyptus cambageana grows too large for private gardens, but looks beautiful with its contrasting bark in public parks.