Eucalyptus rudis
Eucalyptus rudis
Eucalyptus rudis is a flowering plant in the myrtle family ( Myrtaceae ). It occurs in the southwest and west of Western Australia, where it is " Flooded Gum", " Western Australian Flooded Gum ," " Swamp Gum", " Moitch ", " Colort ", "Warm Wood" or " Blue Gum " called.
Description
Appearance and leaf
In Eucalyptus rudis is available Heterophyllie. The leaves are usually divided into petiole and leaf blade. On seedlings, the leaf blade with a length from 4.5 to 8 cm and a width of 3 to 5 cm oval to nearly circular and on the top and bottom slightly different colored dull gray - green. In young specimens the leaf blade with a length of 8 to 14 cm and a width of 5 to 10,5 cm is also oval to nearly circular and on the top and bottom slightly different colored dull gray - green. At middle-aged specimens, the leaf blade is at a length of 10 to 16 cm and a width of 2.5 to 4.5 cm ovate to broadly lanceolate, the same color on the top and bottom mat gray - green, straight and entire, and can pedunculated or be seated. The petioles of adult specimens are narrow flattened or channel-shaped. The on top and bottom of the same color matt green leaf blades of adult specimens are lanceolate with a length of 9 to 14 cm and a width of 1.5 to 3 cm, relatively thin, curved like a sickle, taper towards the Spreitenbasis and have a bespitztes top end. The raised lateral nerves go off at an acute or obtuse angle from the midrib. The cotyledons ( cotyledons ) are wrong - kidney-shaped.
Inflorescence and flower
Page Employed at a at a length of 6 to 15 mm and a diameter of up to 3 mm in cross section, narrow flattened, angular or terete inflorescence stem are about three to siebenblütige or about elfblütige part inflorescences in total composite inflorescences. The flower stalks are 4-8 mm long. The flower buds are floured ovoid or spindle-shaped and not blue-green, with a length of 8 to 12 mm and a diameter of 4 to 6 mm or frosted. The sepals form a calyptra, which drops early. The smooth calyptra conical or oblong pointed, three times as long as the smooth flower cup ( hypanthium ) and as wide as this one. The flowers are white or off- white. The flowering period extends into Western Australia from July to September or from September to November.
Fruit and seeds
The pedunculated, small fruit is hemispherical or bell-shaped and usually vierfächrig at a length of 4 to 6 mm and a diameter of 6 to 9 mm. The disc is flat or slightly raised, the fruit of subjects stand out. The dark brown or black seeds are cubic and pyramidal, the back finely grained and toothed at some edges. The hilum is terminal.
Occurrence
Eucalyptus rudis occurs in the southwest and south of Western Australia, from Albany to Geraldton.
Eucalyptus rudis thrives on sandy and clayey soils in the wetter areas in levels and slopes.
System
The first description of Eucalyptus rudis was made in 1837 by Stephan Ladislaus Finite plantarum quas in Enumeratio in novae Hollandiae ora austro - Occidentali ad Fluvium Cygnorum et in Sinu Regis Georgii collegit Carous liber baro de Hugel, S. 49 The type material has the inscription " King Georges Sound ( hill ) "on. The specific epithet is derived from the Latin word rudis for rough and draws attention to the structure of the bark.
There are two subspecies of Eucalyptus rudis Endl. :
- Eucalyptus rudis subsp. cratyantha Brooker & Hopper, syn. Eucalyptus rudis subsp. cratyantha Brooker & Kleinig nom. inval. , Eucalyptus rudis subsp. Yallingup ( S.D.Hopper 4820 ) WA Herbarium
- Eucalyptus rudis Endl. subsp. rudis, syn. Eucalyptus brachypoda Turcz.
Use
The heartwood of Eucalyptus rudis is pale brown to reddish, hard, but not very stable and has a specific gravity of only about 550 kg / m³. The wood is mainly used as firewood.