Corymbia xanthope
| Corymbia xanthope | ||||||||||||
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| Scientific name | ||||||||||||
| Corymbia xanthope | ||||||||||||
| ( ARBean & Brooker ) KDHill & LASJohnson |
Corymbia xanthope is a species ofthe myrtle family (Myrtaceae). It occurs only on the east coast of Queensland , around Marlborough , and is called "Glen Geddes Bloodwood" there.
description
Appearance and leaf
Corymbia xanthope grows as a tree that reaches heights of up to 20 meters. The bark remains on the smaller branches, is checkerboard-like and matt gray to pale brown. On the upper parts of the tree it is creamy white to gray and peels in small, polygonal patches. There are oil glands in the pith and in the bark.
In Corymbia xanthope , heterophylly 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. On middle-aged specimens, the leaf blade is about 9 cm long and about 0.8 cm wide, lanceolate to elliptical, straight, with entire margins and dull green. The petiole on adult specimens is narrowly flattened or channel-shaped with a length of 10 to 20 mm. The leaf blade on adult specimens is narrow-lanceolate to lanceolate, with a length of 10 to 15 cm and a width of 1.3 to 2.5 cm, relatively thin, curved, with a tapering blade base and pointed upper end. The top and bottom of the leaves are differently matt green. The raised lateral nerves 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 with a length of 8 to 15 mm in cross section, there is a compound inflorescence , which consists of doldy partial inflorescences each with about seven flowers. The flower stalk is 2 to 8 mm long in cross section with a round stem.
The not blue-green floured or frosted flower bud is pear-shaped or spindle-shaped with a length of 7 to 8 mm and a diameter of 5 to 6 mm. The sepals form a calyptra , which is preserved until flowering ( anthesis ). The smooth calyptra is kneecap-shaped, about half as long as the smooth flower cup (hypanthium) and narrower than this. The flowers are white, cream or yellow.
Fruit and seeds
The stalked fruit is urn-shaped and quadruple with a length of 15 to 20 mm and a diameter of 12 to 15 mm. The disc is indented, 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 xanthope is a small area around Marlborough on the east coast of Queensland .
Taxonomy
It was first published in 1989 by Anthony Bean and Ian Brooker under the name ( Basionym ) Eucalyptus xanthope A.R.Bean & Brooker and the title Two New Species of Eucalyptus (Myrtaceae) from Central Queensland in Austrobaileya , Volume 3 (1), p. 39, map 1. The type material has the inscription Queensland. PORT CURTIS DISTRICT: Bruce Highway, 0.5 km south of Glen Geddes siding, 23 ° 02 ″ S, 150 ° 16 ″ E, February 14, 1988, ARBean 753 (holo: BRI). on. The new combination to Corymbia xanthope (ARBean & Brooker) 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. 277.
Individual evidence
- ↑ a b Specimen search results: Corymbia xanthope at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved February 14, 2013
- ↑ a b c APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved February 14, 2013
- ↑ a b c d e f Corymbia xanthope at EucaLink - A Web Guide to the Eucalypts . Retrieved February 14, 2013
- ↑ Corymbia xanthope at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed February 14, 2013.
- ↑ Rafaël Govaerts (Ed.): Corymbia xanthope. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved February 14, 2013.