Marri tree

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Marri tree
Marri tree

Marri tree

Systematics
Order : Myrtle-like (Myrtales)
Family : Myrtle family (Myrtaceae)
Subfamily : Myrtoideae
Tribe : Eucalypteae
Genre : Corymbia
Type : Marri tree
Scientific name
Corymbia calophylla
( R.Br. ex Lindl. ) KDHill & LASJohnson

The Marri tree ( Corymbia calophylla ) is a species of the genus Corymbia within the myrtle family (Myrtaceae). It occurs in the southwest of Western Australia and is called "Marri", "Port Gregory Gum" or "Red Gum" there.

description

Trunk with bark and exit to the cinema
Foliage leaves, flower buds and inflorescences
fruit

Appearance and leaf

The Marri tree grows as a tree that reaches heights of up to 40 meters, rarely up to 60 meters. It is very rarely found as a Mallee . The thick bark is gray-brown to red-brown, cracked and scaly as well as short-fiber and has glands. There are oil glands in the medulla.

In Corymbia calophylla , heterophylly is found in the entire leaves . The alternate to opposite leaves on young specimens are lighter underneath and ovoid, pointed and have simple bristly hairs and those with glandular hairs. The leaves on medium-old plants are lanceolate to elliptical, straight and dull green. The young and medieval leaves have a slightly plate-shaped stalk. The alternate and glossy green, almost monochrome leaves on adult specimens are relatively thick, lanceolate to ovate, lanceolate and tapering towards the base or rounded with a pointed to pointed upper end. They have oil glands and are 9 to 15 cm long and 2.5 to 5.0 cm wide. The narrowly flattened or channel-shaped, partly red petioles are 15 to 30 mm long. The lateral nerves are raised or barely noticeable, blunt and have little spacing. The middle nerve is pronounced and continuous. The cotyledons ( cotyledons ) are almost circular.

Inflorescence and flower

The flowering period in Western Australia extends from December or January to May. At the end of a flattened or angular inflorescence stem with a diameter of up to 3 mm in cross section stands a compound inflorescence that contains three to seven stalked flowers.

The club-shaped flower bud is 7 to 14 mm long, 7 to 10 mm wide and is not floured or frosted blue-green. The sepals form a kalyptra that remains until the flower ( anthesis ) opens. The kalyptra is conical, narrower than the flower cup (hypanthium) and as wide as this. The flower cup and kalyptra are smooth. The flowers are white, cream, or pink.

Fruit and seeds

The egg or urn-shaped, woody and brown capsule fruit is stalked, 30 to 50 mm long and 25 to 40 mm wide. The opening is deepened and the fruit compartments are enclosed.

The flat seeds are indented on the sides, partly boat-shaped and matt black. The hilum is terminal.

Occurrence

The natural range of the Marri tree is the southwest of Western Australia . There it occurs in the regions of Great Southern , South West , Peel , Perth , Wheatbelt and in the far west of Mid West .

The Marri tree thrives on red-brown loam soils , orange-brown, sandy loam soils, gray sand soils based on limestone, granite and laterite . It occurs in plains, on hills, on slopes and rocky steps, in wetlands on salt marshes and along sewer ditches.

Taxonomy

It was first published in 1841 by John Lindley under the name ( Basionym ) Eucalyptus calophylla Lindl. in Edward's Botanical Register , Volume 27 (Misc.), p. 72, no. 157. The type material has the inscription It is a native of Port Augusta of the South-west coast of New Holland, whence its seeds were sent to Capt. Yes. Mangles, RN by Mrs Molloy, (…) . The new combination to Corymbia calophylla (R.Br. ex Lindl.) KDHill & LASJohnson took place in 1995 by Kenneth D. Hill and Lawrence Alexander Sidney Johnson under the title Systematic studies in the eucalypts, 7. A revision of the bloodwoods, genus Corymbia (Myrtaceae ) in Telopea , Volume 6 (2-3), p. 240. Other synonyms for Corymbia calophylla (R.Br. ex Lindl.) KDHill & LASJohnson are Eucalyptus calophylla var. maideniana Hochr. , Eucalyptus calophylla var. Parviflora Blakely , Eucalyptus glaucophylla Hoffmanns. Hook , Eucalyptus splachnicarpa . and Eucalyptus calophylla Lindl. var. calophylla .

There are no subspecies or varieties.

Individual evidence

  1. ↑ a b Specimen search results: Corymbia calophylla at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved January 30, 2013
  2. ↑ a b c d e APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved January 30, 2013
  3. ^ I. Holliday & G. Watton: A Gardener's Guide to Eucalypts. Rigby, Australia. ISBN 0-7270-1257-6 .
  4. ↑ a b c d Corymbia calophylla in the Western Australian Flora . Retrieved January 30, 2013.
  5. ↑ Corymbia calophylla at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed January 30, 2013.
  6. ↑ Rafaël Govaerts (Ed.): Corymbia calophylla. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved January 30, 2013.

Web links

Commons : Marri tree ( Corymbia calophylla )  - Collection of images, videos and audio files