Corymbia clarksoniana
| Corymbia clarksoniana | ||||||||||||
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Corymbia clarksoniana , foliage leaves and fruits |
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| Scientific name | ||||||||||||
| Corymbia clarksoniana | ||||||||||||
| ( DJCarr & SGMCarr ) KDHill & LASJohnson |
Corymbia clarksonisana is a species of the genus Corymbia withinthe myrtle family (Myrtaceae). It occurs in Queensland and in the adjacent, northern New South Wales and is called "Clarkson's Bloodwood" there.
description
Appearance and leaf
Corymbia clarksoniana grows as a tree that reaches heights of up to 20 meters. The bark remains on the entire trunk, is red-brown to gray-brown, checkerboard-like and has no glands. The bark of the small branches is green. There are oil glands in the medulla.
In Corymbia clarksoniana , heterophyllia is present. The leaves are always divided into a petiole and a leaf blade. The leaf blade on young specimens is lanceolate to ovate and has stiff glandular hairs. The leaf blade on medium-old plants is about 18 centimeters long and about 0.5 centimeters wide, elliptical to broadly lanceolate, straight, with entire margins and shiny green. The leaf blade on adult specimens is relatively thin, with a length of 12 to 20 centimeters and a width of 1.4 to 3.5 centimeters narrow-lanceolate to lanceolate, straight, with a tapering blade base and a pointed upper end. The top and bottom of the leaves are colored differently matt gray-green. The side nerves, which are barely recognizable, leave the median nerve at small intervals at an obtuse angle. On each half of the leaf there is a pronounced, continuous, so-called intramarginal nerve; it runs at a small distance along the edge of the leaf. The cotyledons ( cotyledons ) are almost circular.
Inflorescence and flower
At the end of an inflorescence shaft with a length of 8 to 20 mm and a diameter of up to 3 mm in cross-section, with a narrow, flattened or angular inflorescence stem, there is a compound inflorescence consisting of golden partial inflorescences each with about seven flowers. The flower stalk is round in cross section with a length of 4 to 9 mm.
The egg or club-shaped flower bud is 6 to 10 mm long, 4 to 6 mm wide and can be floured or frosted blue-green. The sepals form a calyptra that remains until the flower ( anthesis ) opens. The smooth calyptra is hemispherical, a third to half as long as the smooth flower cup (hypanthium) and narrower than this. The flowers are white or cream in color.
Fruit and seeds
The stalked fruit is 12 to 21 mm long and 10 to 15 mm in diameter, oval or urn-shaped and four-fan. The disc is indented and the fruit compartments are included.
The regular and laterally flattened, boat-shaped or egg-shaped seed has a net-like, matt to silk-matt, red-brown seed coat. The hilum is at the top of the seed.
Occurrence
The natural range of Corymbia clarksoniana is the entire eastern half of Queensland and the adjacent, northern and northeastern New South Wales .
Taxonomy
It was first published in 1987 by Dennis John Carr and Stella Grace Maisie Carr under the name ( Basionym ) Eucalyptus clarksoniana D.J. Carr & SGMCarr in Eucalyptus II - The rubber cuticle, and other studies of the Corymbosae , p. 209. The type material has the inscription Clarkson , JR 3590 15 Oct. 1980, 7.6 km from Killarney on track to New Dixie 15 ° 55 '' 141 ° 44 '' Holo: QRS. Iso: BRI. on. The new combination to Corymbia clarksoniana (DJCarr & SGMCarr) KDHill & LASJohnson took place in 1995 under the title Systematic studies in the eucalypts. 7. A revision of the bloodwoods, genus Corymbia (Myrtaceae) in Telopea , Volume 6 (2-3), p. 259. Further synonyms for Corymbia clarksoniana (DJCarr & SGMCarr) KDHill & LASJohnson are Corymbia maritima K.D.Hill & LASJohnson , Corymbia ligans subsp. burdekinensis K.D. Hill & LASJohnson , Corymbia dolichocarpa (DJCarr & SGMCarr) KDHill & LASJohnson , Eucalyptus dolichocarpa D.J.Carr & SGMCarr and Eucalyptus novoguinensis D.J.Carr & SGMCarr .
Individual evidence
- ↑ a b c Specimen search results: Corymbia clarksoniana at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved February 8, 2013
- ↑ a b c APNI = Australian Plant Name Index. Center for Plant Biodiversity Research. Australian Government. Retrieved February 8, 2013
- ↑ a b c d e f g Corymbia clarksoniana at EucaLink - A Web Guide to the Eucalypts . Retrieved February 8, 2013
- ^ Corymbia clarksoniana at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed February 8, 2013.
- ↑ Rafaël Govaerts (Ed.): Corymbia clarksoniana. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved February 8, 2013.
