Eucalyptus cornuta
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Eucalyptus cornuta , fruits |
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| Labill. |
Eucalyptus cornuta is a species ofthe myrtle family (Myrtaceae). It occurs in the southeast of South Australia and in the south and southwest of Western Australia and is called "Yate" there.
description
Appearance and leaf
Eucalyptus cornuta grows as a tree or grows in the growth form of the mallee - eucalyptus , this is a growth form that is more shrub -like than tree-shaped , there are usually several trunks present that form a lignotuber that reaches heights of 2 to 25 meters. The bark is rough and fibrous-lumpy with white spots or streaky, red-brown, gray or black. There are oil glands in the marrow of the young branches, but not in the bark.
In Eucalyptus cornuta is Heterophyllie ago. The leaves are always divided into a petiole and a leaf blade. The leaf stalks are narrowly flattened or channel-shaped. On middle-aged specimens, the leaf blade is elliptical to ovate, straight, with entire margins and a dull gray-green. The green leaves of the same color on the top and bottom of adult specimens are lanceolate or broadly lanceolate, straight, relatively thick, taper towards the base of the blades and have a blunt upper end. The raised lateral nerves extend from the median nerve at an acute angle. The cotyledons ( cotyledons ) are in two parts.
Inflorescence and flower
On the side of an inflorescence stem with a wide flattened cross section, there are more than eleven flowers in a single inflorescence . The flower buds are beak-shaped and not floured or frosted blue-green. The sepals form a calyptra that falls off early. The smooth calyptra is elongated-pointed or beak-shaped, three times as long as the smooth flower cup (hypanthium) and as wide as this. The flowers are white, creamy white or yellow-green. The flowering period in Western Australia extends from January to May or July to November.
fruit
The fruit is cylindrical, hemispherical or bell-shaped. The disc is flat or raised, the fruit compartments stick out.
Occurrence
The natural range of Eucalyptus cornuta is in the southwest and from Western Australia and the southeast of South Australia , around Adelaide . In Western Australia, Eucalyptus cornuta occurs in the independent administrative districts of Augusta-Margaret River , Busselton , Cranbrook , Denmark , Esperance , Gnowangerup , Jerramungup , Manjimup , Nannup and Plantagenet in the regions Goldfields-Esperance , Great Southern and South West .
Eucalyptus cornuta grows on sandy and clay soils . Eucalyptus cornuta is found on granite outcrops , in damp valleys and in winter-damp plains.
Systematics
The first description of Eucalyptus cornuta was made in 1800 by Jacques Labillardière in relation du Voyage à la Recherche de la Perouse , Volume 1, page 402, Table 17 A synonym for Eucalyptus cornuta Labill. is Eucalyptus macrocera Turcz.
Natural hybrids of Eucalyptus cornuta with Eucalyptus lehmannii subsp. lehmannii , Eucalyptus lehmannii subsp. parallela , Eucalyptus angulosa were found.
Individual evidence
- ↑ a b Specimen search results: Eucalyptus cornuta at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved March 15, 2013
- ↑ a b c d APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved March 15, 2013
- ↑ a b c d e Eucalyptus cornuta at EucaLink - A Web Guide to the Eucalypts . Retrieved March 15, 2013.
- ↑ a b c d Eucalyptus cornuta in the Western Australian Flora . Retrieved March 15, 2013.
- ↑ Eucalyptus cornuta at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed March 15, 2013.
- ↑ Rafaël Govaerts (ed.): Eucalyptus cornuta. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved March 15, 2013.
