Corymbia bella
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Corymbia bella |
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| KDHill & LASJohnson |
Corymbia bella is a species of the genus Corymbia withinthe myrtle family (Myrtaceae). It occurs all over northern Australia and is called "Ghost Gum" or "Weeping Ghost Gum" there.
description
Appearance and leaf
Corymbia bella grows as a tree that reaches heights of 6 to 20 meters or even up to 30 meters. The bark is smooth or remains on the lower part of the trunk and is gray or gray-black. In the upper part of the tree it is white or gray and peels in short strips or small, polygonal spots. The bark of the small branches is green. There are oil glands in the marrow, but not in the bark.
In Corymbia bella , 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 specimens is linear to narrow-lanceolate, straight, entire and shiny green, with a length of about 24 centimeters and a width of about 0.5 centimeters. The leaf stalk, which is narrowly flattened or channel-shaped in cross section, is 5 to 10 mm long in adult specimens. The leaf blade on adult specimens can be thin to relatively thick and, with a length of 8 to 18 centimeters and a width of 1 to 1.8 centimeters, is linear to narrow-lanceolate, straight, with a tapering blade base and a pointed upper end. The top and bottom of the leaves are of the same color, matt green to 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
The flowering period in Western Australia extends from July or September to December. On an inflorescence stem with a length of 5 to 7 mm in cross-section, which is round with a pedicel, stands a composite inflorescence , which consists of dold-like partial inflorescences with one to seven flowers each. The flower stalk is 2 to 3 mm long in cross section with a round stem.
The club- or pear-shaped flower bud is 4 to 6 mm long, 3 to 4 mm wide and is not floured or frosted blue-green. The sepals form a calyptra that falls off early. The smooth calyptra is kneecap-shaped and as wide as the smooth flower cup (hypanthium). The flowers are white or cream in color.
Fruit and seeds
The stalked fruit is 8 to 11 mm long and 6 to 8 mm in diameter, cylindrical to ovoid and triple. The disc is indented and the fruit compartments are included.
The regular and laterally flattened, kneecap-shaped or egg-shaped seed has a net-like, matt to silk-matt, red or red-brown seed coat . The hilum is at the top of the seed.
Occurrence
The natural range of Corymbia bella is the whole of northern Australia from Western Australia over the Northern Territory to Queensland , north of the 20th southern parallel. To the south of it, Corymbia bella occurs only in a few places in Western Australia and Queensland.
Corymbia bella thrives on alluvial soil , along watercourses and in floodplains .
Taxonomy
The first description of Corymbia bella was in 1995 by the Australian botanists 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. 411. The type material is labeled Northern Territory: 64.5 km N of Larrimah, K. Hill 3278, L.Johnson & L. Stanberg, Nov. 9, 1988 (holo: NSW; iso DNA) . The specific epithet bella is derived from the Latin word bellus for beautiful.
Synonyms for Corymbia bella K.D. Hill & LASJohnson are Eucalyptus bella (KDHill & LASJohnson) Brooker and Eucalyptus sp. AA.
Individual evidence
- ↑ a b c Specimen search results: Corymbia bella 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 Corymbia bella in the Western Australian Flora . Retrieved February 8, 2013.
- ↑ a b c d e f g Corymbia bella at EucaLink - A Web Guide to the Eucalypts . Retrieved February 8, 2013
- ^ Australian Touring Atlas. Steve Parish Publishing, Archerfield QLD 2007, ISBN 978-1-74193-232-4 .
- ↑ Corymbia bella at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed February 8, 2013.
- ↑ Rafaël Govaerts (Ed.): Corymbia bella. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved February 8, 2013.
