Eucalyptus ambigua

Eucalyptus ambigua
Systematics
Order :	Myrtle-like (Myrtales)
Family :	Myrtle family (Myrtaceae)
Subfamily :	Myrtoideae
Tribe :	Eucalypteae
Genre :	Eucalyptus ( eucalyptus )
Type :	Eucalyptus ambigua
Scientific name
	Eucalyptus ambigua
	DC.

Eucalyptus ambigua is a species ofthe myrtle family (Myrtaceae). It occurs in Tasmania and is called there "Peppermint", "Shining Peppermint", "Shiny-leaved Peppermint" or "Smithton Peppermint".

description

Appearance and leaf

Eucalyptus ambigua grows as a tree that reaches heights of up to 40 meters, 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 . The bark remains on the lower part of the trunk, is rough and has short fibers with longitudinal fissures and peels off the branches in long ribbons. The smooth parts of the young bark are yellow-green and then weather from whitish-gray to dark-gray.

In Eucalyptus ambigua there is heterophylly . The opposite, sitting and on top and bottom differently colored blue-green or gray-green leaves on seedlings are egg-shaped to broadly lanceolate with a length of 4.5 to 8.5 cm and a width of 2.2 to 5 cm. The alternately arranged leaves on young specimens are divided into petioles and leaf blades. Their leaf blades, which are slightly different in color on the top and bottom, are also ovate to broadly lanceolate, with a length of 6 to 11 cm and a width of 2.8 to 7 cm. On medium-old specimens, the leaf blade is glossy green on the top and bottom of the same color, with a length of 8.5 to 15 cm and a width of 1.7 to 3 cm broadly lanceolate. The leaf blades on adult specimens are glossy green on the top and bottom and are 6.5 to 13 cm long and 0.8 to 1.7 cm wide, lanceolate to narrow-lanceolate, straight and have a pointed upper end. The cotyledons ( cotyledons ) are kidney-shaped.

Inflorescence and flower

Lateral on a pedicel-round or slightly angular inflorescence stem with a length of 2 to 8 mm in cross-section, eleven or more flowers stand together in a simple inflorescence . If available, the flower stalks are up to 4 mm long. The flower buds are club-shaped with a length of 5 to 6 mm and a diameter of about 3 mm. The sepals form a calyptra that remains in place until flowering ( anthesis ). The calyptra is hemispherical, often pointed. The flowering period extends from December to January.

Fruit and seeds

The seated or short-stalked fruit is 4 to 8 mm long and 5 to 9 mm in diameter, hemispherical or inverted conical and three to five pods. The wide disc is level with the rim or is slightly raised, the fruit compartments are level with the rim.

The brown seed is pyramidal or slightly pyramidal. The hilum is terminal.

Occurrence

The natural range of Eucalyptus ambigua is Tasmania and the islands in the Bass Strait . On the smaller islands, on poor sandy soils and at higher altitudes, Eucalyptus ambigua grows mainly in the form of the mallee - eucalyptus .

Systematics

AR Bean laid in Eucalyptus ambigua DC in 2009 . (Myrtaceae), the correct name for the Smithson Peppermint of Tasmania . Muelleria , Volume 27, 2009, pp. 227-229 Eucalyptus ambigua DC. as an accepted name. Before that, Eucalyptus nitida Hook.f. used and so this name is in all sources before 2009. The first description of Eucalyptus ambigua was in 1828 by Augustin-Pyrame de Candolle in Prodromus Systematis Naturalis Regni Vegetabilis , 3, p. 219. Other synonyms for Eucalyptus ambigua DC. are: Eucalyptus amygdlina var. nitida (Hook.f.) Benth., Eucalyptus simmondsii Maiden, Eucalyptus australiana var. nitida (Hook.f.) Ewart.

Eucalyptus ambigua forms a natural hybrid with Eucalyptus amygdalina .

use

The heartwood of Eucalyptus ambigua is light and slightly softer than that of other eucalyptus , but quite durable. It has a specific weight of around 980 kg / m³. The wood from Eucalyptus nitida is often used as construction timber for smaller structures.

Individual evidence

↑ ^a ^b Specimen search results: Eucalyptus miniata at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved March 27, 2013
↑ ^a ^b APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved March 27, 2013
↑ ^a ^b ^c Eucalyptus nitida at EucaLink - A Web Guide to the Eucalypts . Retrieved March 27, 2013.
↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Smithton Peppermint, Peppermint (Tas.) - Eucalyptus nitida in: DJ Boland, MIH Brooker, GM Chippendale, N. Hall, BPM Highland, RD Johnston, DA Kleinig, MW McDonald & JD Turner (Editor): Forest Trees of Australia . CSIRO Publishing. 5th edition 2006. p. 598 at Google Books . Retrieved March 27, 2013
↑ Eucalyptus ambigua at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed May 2, 2013.
↑ Rafaël Govaerts (ed.): Eucalyptus ambigua. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved May 2, 2013.

[AVH-1] Specimen search results: Eucalyptus miniata at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved March 27, 2013

[APNI-2] APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved March 27, 2013

[EucaLink-3] Eucalyptus nitida at EucaLink - A Web Guide to the Eucalypts . Retrieved March 27, 2013.

[FTA-4] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Smithton Peppermint, Peppermint (Tas.) - Eucalyptus nitida in: DJ Boland, MIH Brooker, GM Chippendale, N. Hall, BPM Highland, RD Johnston, DA Kleinig, MW McDonald & JD Turner (Editor): Forest Trees of Australia . CSIRO Publishing. 5th edition 2006. p. 598 at Google Books . Retrieved March 27, 2013

[tropicos-5] Eucalyptus ambigua at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed May 2, 2013.

[WCSP-6] Rafaël Govaerts (ed.): Eucalyptus ambigua. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved May 2, 2013.