Eucalyptus gracilis
| Eucalyptus gracilis | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Eucalyptus gracilis |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Eucalyptus gracilis | ||||||||||||
| F. Garbage. |
Eucalyptus gracilis is a species ofthe myrtle family (Myrtaceae). It occurs in southern Australia , from southern Western Australia to western Victoria , as well as in the southwest and in the center of New South Wales , where it is called "Mallee Gum", "White Mallee", "Red Mallee", "Kong Mallee", " Square Fruit Mallee ”,“ Yorell Mallee ”,“ Yorrell ”,“ Yorel ”,“ Morel ”or“ Snap and Rattle ”.
description
Appearance and leaf
Eucalyptus gracilis grows as a tree or in the form of the mallee - eucalyptus . This is a growth form that is more shrub -shaped than tree-shaped , there are usually several trunks that form a lignotuber that reaches heights of up to 8 meters, rarely up to 15 meters or 20 meters. The bark remains on the lower part of the trunk, is gray with whitish spots and fibrous and lumpy. At the top of the tree it is white or gray and peels in short strips. It can also take on a coppery creamy white there. The bark of the small branches is green. There are no oil glands in the marrow or in the bark.
In Eucalyptus gracilis , heterophyllia is present. The leaves are always divided into a petiole and a leaf blade. The petiole is 7 to 14 mm long. On young specimens, the leaf blade is elliptical and blue-green floured or frosted. On middle-aged specimens, the blue-green floured or frosted leaf blade is about 6 cm long and about 1 cm wide and lanceolate, straight and with entire margins. The leaf blade on adult specimens is glossy green on the upper and lower side and is 5 to 8 cm long and 0.8 to 1.5 cm wide, narrow-lanceolate, relatively thick, straight, tapers towards the base of the blade and has a pointed top end. The side nerves, which are barely recognizable, extend from the median nerve at an acute or very acute angle. The cotyledons ( cotyledons ) are divided into two parts.
Inflorescence and flower
On an inflorescence stem with a length of 5 to 10 mm in cross section, there are about seven flowers together in a simple inflorescence . The peduncle is 2 to 5 mm in length with a round stem. The not blue-green floured or frosted flower buds are club-shaped with a length of 4 to 6 mm and a diameter of 3 to 4 mm. The sepals form a calyptra that falls off early. The smooth calyptra is hemispherical, shorter or as long as smooth flower cups (hypanthium) and narrower than these. The flowers are white or creamy white. The stamens are fused together, and the anthers of the outer stamens are sterile. The flowering period in Western Australia extends from March to October.
fruit
The stalked fruit is 4 to 7 mm long and 3 to 5 mm in diameter, ovoid or urn-shaped and three to four fan-shaped. The disc is indented, the fruit compartments are included.
Occurrence
The natural range of Eucalyptus gracilis is the southeast of Western Australia , the south of South Australia , the west of Victoria and the southwest and central New South Wales .
Eucalyptus gracilis occurs locally in the bushland and on red, Aeolian sands. In Western Australia they are found on yellow, brown or red sand, on stony brown-red-sandy loam and on orange-brown calcareous loam, on sand dunes, in sand plains, on ridges of elevations and on streams.
Taxonomy
The first description of Eucalyptus gracilis was made in 1855 by Ferdinand von Mueller , entitled Description of fifty nes Australian plants, chiefly from the colony of Victoria in Transactions and Proceedings of the Victorian Institute for the Advancement of Science , Volume 1, page 35. The type material is labeled " In the desert on the Murray River, where it forms the Mallee Scrub together with E. dumosa, santalifolia and other species ". Synonyms for Eucalyptus gracilis F.Muell. are Eucalyptus fruticetorum F.Muell. ex Miq., Eucalyptus viridis RTBaker, Eucalyptus calycogona var. gracilis (F.Muell.) Maiden, Eucalyptus calycogona Turcz., Eucalyptus gracilis var. erecta Blakely, Eucalyptus gracilis var. viminea Blakely, Eucalyptus gracilis var. brevifolia Benth., Eucalyptus gracilis F. Garbage. var. gracilis , Eucalyptus gracilis F. Muell. subsp. gracilis nom. inval., Eucalyptus gracilis var. viminea Blakely.
Individual evidence
- ↑ a b c Specimen search results: Eucalyptus gracilis at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved February 26, 2013
- ↑ a b c APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved February 26, 2013
- ↑ a b c d e f g h i j k K. Hill: Eucalyptus gracilis (F. Muell.) At New South Wales Flora Online . National Herbarium of NSW, Royal Botanic Garden, Sydney. Retrieved February 26, 2013
- ↑ a b c d e f g h i j k l m Eucalyptus gracilis at EucaLink - A Web Guide to the Eucalypts . Retrieved February 26, 2013.
- ↑ a b c d e Eucalyptus gracilis in the Western Australian Flora . Retrieved February 26, 2013.
- ↑ Eucalyptus gracilis at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed February 26, 2013.
- ↑ Rafaël Govaerts (Ed.): Eucalyptus gracilis. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved February 26, 2013.
