Eucalyptus rudis
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Eucalyptus rudis is a species ofthe myrtle family (Myrtaceae). It occurs in the southwest and west of Western Australia and is called "Flooded Gum", "Western Australian Flooded Gum", "Swamp Gum", "Moitch", "Colort", "Warmwood" or "Blue Gum" there.
description
Appearance and leaf
Eucalyptus rudis grows as a tree that reaches heights of 5 to 20 meters and a breast height diameter (BHD) of up to 1 meter. The bark remains on the entire trunk or the larger branches and is gray with white spots, rough and fibrous and lumpy. The bark of the smaller branches is smooth and white. There are oil glands both in the pith of the young branches and in the bark.
In Eucalyptus rudis is Heterophyllie ago. The leaves are mostly divided into a petiole and a leaf blade. With a length of 4.5 to 8 cm and a width of 3 to 5 cm, the leaf blade on seedlings is egg-shaped to almost circular and on the top and bottom slightly differently colored matt gray-green. On young specimens, the leaf blade is 8 to 14 cm long and 5 to 10.5 cm wide, also egg-shaped to almost circular, and on the top and bottom, slightly different colors, matt gray-green. On medium-old specimens, the leaf blade is 10 to 16 cm long and 2.5 to 4.5 cm wide, ovate to broadly lanceolate, on the top and bottom of the same color, matt gray-green, straight and entire, and can be petiolate or be seated. The leaf stalks on adult specimens are narrowly flattened or channel-shaped. The leaf blades of the same color on the top and bottom of adult specimens are lanceolate, 9 to 14 cm long and 1.5 to 3 cm wide, relatively thin, sickle-shaped, taper towards the base of the blade and have a pointed top The End. The raised lateral nerves extend from the median nerve at an acute or obtuse angle. The cotyledons ( cotyledons ) are upside-kidney-shaped.
Inflorescence and flower
On the side of an angular or pedicel-round inflorescence stem with a length of 6 to 15 mm and a diameter of up to 3 mm in cross-section, there are approximately three to seven-flowered or about eleven-flowered partial inflorescences in compound total inflorescences . The flower stalks are 4 to 8 mm long. With a length of 8 to 12 mm and a diameter of 4 to 6 mm, the flower buds are egg-shaped or spindle-shaped and not floured or frosted blue-green. The sepals form a calyptra that falls off early. The smooth calyptra is conical or oblong, pointed, three times as long as the smooth flower cup (hypanthium) and just as wide as this. The flowers are white or creamy white. The flowering period in Western Australia extends from July to September or from September to November.
Fruit and seeds
The stalked, small fruit is 4 to 6 mm long and 6 to 9 mm in diameter hemispherical or bell-shaped and usually four-faced. The disc is flat or slightly raised, the fruit compartments stick out. The dark brown or black seeds are cubic to pyramidal, finely grained on the back and toothed on some edges. The hilum is terminal.
Occurrence
Eucalyptus rudis is found in the southwest and south of Western Australia , from Albany to Geraldton .
Eucalyptus rudis thrives on sandy and clay soils in the wetter areas in plains and slopes.
Systematics
The first description of Eucalyptus rudis was made in 1837 by Stephan Endlicher in Enumeratio plantarum quas in Novae Hollandiae ora Austro-occidentali ad fluvium Cygnorum et in Sinu Regis Georgii collegit Carous liber baro de Hugel 49. The type material has the inscription " King George Sound (Hill) ”. The specific epithet rudis is derived from the Latin word for rough and indicates 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 (SDHopper 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 durable and has a specific weight of only about 550 kg / m³. The wood is mainly used as firewood.
Individual evidence
- ↑ a b Specimen search results: Eucalyptus rudis at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved April 3, 2013
- ↑ a b c d APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved April 3, 2013
- ↑ a b c d e f g h i j k l m Moitch, Flooded Gum, Colort, Swamp Gum, Wormwood, Blue Gum - Eucalyptus rudis in: DJ Boland, MIH Brooker, GM Chippendale, N. Hall, BPM Highland, RD Johnston, DA Kleinig, MW McDonald & JD Turner (Editors): Forest Trees of Australia . CSIRO Publishing. 5th Edition 2006. pp. 504-505 at Google Books . Retrieved April 3, 2013
- ↑ a b c d e f g h i Eucalyptus rudis at EucaLink - A Web Guide to the Eucalypts . Retrieved April 3, 2013.
- ↑ a b c d Eucalyptus rudis in the Western Australian Flora . Retrieved April 3, 2013
- ↑ Eucalyptus rudis at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed April 3, 2013.
- ↑ a b Rafaël Govaerts (Ed.): Eucalyptus rudis. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved April 3, 2013.
