Corymbia torelliana
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Corymbia torelliana , deciduous leaves, inflorescences and fruits |
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| Corymbia torelliana | ||||||||||||
| ( F.Muell. ) KDHill & LASJohnson |
Corymbia torelliana is a species ofthe myrtle family (Myrtaceae). It occurs on the east coast of Queensland and on the south-east coast of Papua New Guinea and is called "Cadaghi" or "Cadaga" there.
description
Appearance and leaf
Corymbia torelliana grows as a tree that reaches heights of up to 25 meters. The bark remains on the lower part of the trunk, is smooth, checkerboard-like or fibrous and matt or glossy gray on the entire tree. At the top of the tree it is gray and green and peels in small, polygonal patches. There are oil glands in the pith and in the bark.
At Corymbia torelliana is Heterophyllie ago. The leaves on young and middle-aged specimens are divided into a petiole and a leaf blade. The leaf blade on young specimens is lanceolate to ovate and has simple hairs and stiff glandular hairs. On middle-aged specimens, the leaf blade is lanceolate to elliptical, straight, with entire margins and dull green. The leaf blade on adult specimens is lanceolate to broadly lanceolate, relatively thin, straight or curved, with a tapering or round blade base and a pointed or pointed upper end. The top and bottom of the leaves are differently matt 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 stem that is round in cross section stands a compound inflorescence , which consists of dold-like partial inflorescences , each with about three to seven flowers. The pedicel is round in cross section.
The egg-shaped flower bud is not floured or frosted blue-green. The sepals form a calyptra that falls off early. The smooth calyptra is hemispherical and as wide as the smooth flower cup (hypanthium). The flowers are white or cream in color.
Fruit and seeds
The seated fruit is spherical to urn-shaped and triple. The disc is indented, the fruit compartments are included.
The regular and flattened, kneecap- or egg-shaped seed has a reticulate, dull to silk-matt, red or red-brown seed coat. The hilum is at the top of the seed.
Occurrence
The natural range of Corymbia torelliana is the east coast of Queensland , especially around the cities of Brisbane and Cairns , as well as the coastal region of southeast Papua New Guinea .
Taxonomy
It was first described in 1877 by Ferdinand von Mueller under the name ( Basionym ) Eucalyptus torelliana F. Muell. in Fragmenta Phytographiae Australiae , Volume 10 (87), p. 106. The type material is inscribed Prope portum Trinity Bay, Fitzalan . The new combination to Corymbia torelliana (F.Muell.) 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. 385.
Hybrids of Corymbia torelliana × Corymbia henryi and of Corymbia torelliana × Corymbia tessellaris are known from Queensland.
Web links
Individual evidence
- ↑ a b Specimen search results: Corymbia torelliana at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved February 14, 2013
- ↑ a b c d APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved February 14, 2013
- ↑ a b c d e f Corymbia torelliana at EucaLink - A Web Guide to the Eucalypts . Retrieved February 14, 2013
- ↑ Corymbia torelliana at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed February 14, 2013.
- ↑ Rafaël Govaerts (ed.): Corymbia torelliana. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved February 14, 2013.