Eucalyptus morrisii
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Eucalyptus morrisii |
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| RTBaker |
Eucalyptus morrisii is a species ofthe myrtle family (Myrtaceae). It occurs in the center of New South Wales and is called "Gray Mallee" there.
description
Appearance and leaf
Eucalyptus morrisii grows in the form of the mallee - eucalyptus , this is a growth form that is more shrub -like than tree-shaped , there are usually several trunks that form a lignotuber or tree that reaches heights of growth of up to 10 meters. The bark remains on the lower part of the trunk or on the entire trunk and the larger branches, is gray to yellow-brown and has short fibers or stripes. At the top of the tree it is smooth, white to gray and peeling in patches. The smaller branches have a green bark. There are no oil glands in the marrow or in the bark.
In Eucalyptus morrisii , heterophyllia is present. The leaves are always divided into a petiole and a leaf blade. The petiole is narrowly flattened or channel-shaped with a length of 10 to 20 mm. The leaf blade on young specimens is narrow-lanceolate to linear and dull green. On middle-aged specimens, the leaf blade is about 12 cm long and about 1.2 cm wide, also narrow-lanceolate to linear, straight, with entire margins and dull green. The leaf blades of the same color on the top and bottom of adult specimens are dull gray-green and are 8 to 12 cm long and 1.2 to 2.0 cm wide, narrow-lanceolate or lanceolate, relatively thin, crescent-shaped and tapered towards the base of the spade and have a pointed upper end. The raised lateral nerves emerge from the median nerve at an acute angle at medium distances. The cotyledons ( cotyledons ) are upside-kidney-shaped.
Inflorescence and flower
Lateral on a 5 to 10 mm long and in cross-section pedunculate or square-edged inflorescence stem three to rarely seven flowers stand together in a simple inflorescence . The flower stalks are round and up to 3 mm long. The not blue-green floured or frosted flower buds are egg-shaped with a length of 7 to 12 mm and a diameter of 5 to 6 mm. The sepals form a calyptra that falls off early. The smooth calyptra is conical, three times as long as the smooth flower cup (hypanthium) and as wide as this. The flowers are white or creamy white.
fruit
The stalked fruit is 7 to 9 mm long and 6 to 9 mm in diameter spherical or egg-shaped and four to six-fan. The disc is raised, the fruit fans protrude.
Occurrence
The natural range of Eucalyptus morrisii is the center of New South Wales between Bourke and Euabalong .
Eucalyptus morrisii thrives in small local occurrences only in hard- leaf shrubland on dry sandstone rocks that are only sparsely covered with soil .
Taxonomy
The first description of Eucalyptus morrisii was made in 1900 by Richard Thomas Baker in Proceedings of the Linnean Society of New South Wales , Volume 25, page 312, Table XVIII. The type material has the inscription “ Near Girilambone, on stony or rocky hills, thence on hills across country to Cobar, also near Coolabah, where it occurs on more or less level and less stony ground. (W. Bäuerlen) “.
Individual evidence
- ↑ a b Specimen search results: Eucalyptus morrisii at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved February 28, 2013
- ↑ a b c APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved February 28, 2013
- ↑ a b c d e f g h i j k l m Eucalyptus morrisii at EucaLink - A Web Guide to the Eucalypts . Retrieved February 28, 2013.
- ↑ a b c d e f g K. Hill: Eucalyptus morrisii (RTBaker) at New South Wales Flora Online . National Herbarium of NSW, Royal Botanic Garden, Sydney. Retrieved February 28, 2013
- ↑ Eucalyptus morrisii at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed February 28, 2013.
- ↑ Rafaël Govaerts (ed.): Eucalyptus morrisii. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved February 28, 2013.
