Peppermint eucalyptus

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Peppermint eucalyptus
Eucalyptus radiata

Eucalyptus radiata

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

The peppermint eucalyptus ( Eucalyptus radiata ) is a species of the myrtle family (Myrtaceae). It occurs on the east coast of New South Wales and Victoria and in Queensland and is called there "Narrow-leaved Peppermint", "Forth River Peppermint" or "River White Gum".

description

bark
Foliage leaves
Inflorescences

Appearance and leaf

Eucalyptus radiata grows as a tree that reaches heights of 30 meters, rarely up to 50 meters. The bark remains on the trunk and the larger branches or on the entire tree, is gray to gray-brown and has short fibers. Further up the tree, it is smooth and gray and peeled in long ribbons.

In Eucalyptus radiata there is heterophylly . The opposite leaves on young specimens are narrow-lanceolate to broad-lanceolate and dull green. The solid green, more or less shiny leaves on older specimens are narrow-lanceolate or lanceolate with a length of 7 to 15 cm and a width of 0.7 to 1.5 cm.

Inflorescence and flower

An stem of round cross-section, from 2 to 8 mm long Blütenstandsschäften are in total inflorescences more than elfblütige part inflorescences. The pedicel-round flower stalks are 1 to 5 mm long. The flower buds are club-shaped with a diameter of 2 to 4 mm and a length of 3 to 6 mm. The sepals form a calyptra . The calyptra is conical or hemispherical and shorter and narrower than the flower cup (hypanthium). The flowers are creamy white.

fruit

The fruit is spherical, hemispherical or pear-shaped with a length and a diameter of 4 to 6 mm. The discus is flat. The fruit compartments are enclosed or at the level of the rim.

Main distribution area

Occurrence

The distribution area of ​​the peppermint eucalyptus extends from the Great Dividing Range on the border between Queensland and New South Wales down to the east of Victoria. The peppermint eucalyptus grows on a range of soils in woodland and open woodland. It does best in cooler, wetter climates. You can also find peppermint eucalyptus in the northwest of Tasmania .

Systematics

The first description of Eucalyptus radiata was made in 1828 by the Swiss botanist Augustin Pyramus de Candolle in Prodromus Systematis Naturalis Regni Vegetabilis , Volume 3, page 218. The type material has the caption "Sieber, pl. exs. nov.-holl. n. 25 “.

Of Eucalyptus radiata are two subspecies:

  • Eucalyptus radiata Sieber ex DC. subsp. radiata (Syn .: Eucalyptus amygdalina var. radiata (DC.) Benth. , Eucalyptus radiata var. subexserta Blakely , Eucalyptus radiata var. australiana (RTBaker & DDWM.) Blakely , Eucalyptus phellandra R.T.Baker & DDWM. , Eucalyptus amygdalina var. Numerosa Maiden nom. Illeg., Eucalyptus australiana R.T.Baker & HGSm. ): It occurs in Victoria and New South Wales. The leaves on young specimens are linear to lanceolate.
  • Eucalyptus radiata subsp. sejuncta L.ASJohnson & KDHill (Syn .: Eucalyptus radiata var. subplatyphylla Blakely & McKie ): It occurs in Queensland and New South Wales. The leaves on young specimens are broadly lanceolate.

use

The peppermint eucalyptus has six chemotypes of essential oils . Eucalyptus oil based on cineole and phellandrene is distilled from the leaves . This eucalyptus species was the first that pharmacist Joseph Bosisto (1827–1898) from Melbourne used commercially in 1854, under the name Eucalyptus amygdalina .

Individual evidence

  1. a b c Specimen search results: Eucalyptus radiata at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved January 21, 2013
  2. a b c d e f g h i K. Hill: Eucalyptus radiata (Sm.) At New South Wales Flora Online . National Herbarium of NSW, Royal Botanic Garden, Sydney. Retrieved January 22, 2013
  3. a b c d APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved January 22, 2013
  4. Rafaël Govaerts (Ed.): Eucalyptus radiata. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved January 22, 2013.
  5. DJ Boland, JJ Brophy & APN House: Eucalyptus Leaf Oils . 1991, ISBN 0-909605-69-6 . (Perhaps was available to the editor at en: Wikipedia, but not when editing here at de: WP, so the text was taken from the en: WP, translated and not checked.)

Web links

Commons : Eucalyptus radiata  - collection of images, videos and audio files