Corymbia stockeri
| Corymbia stockeri | ||||||||||||
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| Corymbia stockeri | ||||||||||||
| ( DJCarr & SGMCarr ) KDHill & LASJohnson |
Corymbia stockeri is a species ofthe myrtle family (Myrtaceae).
It occurs on the north east coast of the Australian state of Queensland and is called "Blotchy Bloodwood" there.
description
Appearance and leaf
Corymbia stockeri grows as a tree that can reach heights of up to twelve meters. The bark remains on the trunk and on the larger branches or on the smaller twigs, is checkerboard-like and matt red-brown to gray-brown. On the upper parts of the tree it is creamy white and peels in small, polygonal patches. There are oil glands in the pith and in the bark.
In Corymbia stockeri , heterophyllia is present. The leaves are always divided into a petiole and a leaf blade. The leaf blade on young specimens is linear and has stiff glandular hairs. On medium-old specimens, the leaf blade is about 20 cm long and about 5 cm wide and lanceolate to broadly lanceolate, straight, with entire margins and dull green. The petiole on adult specimens is narrowly flattened or channel-shaped with a length of 8 to 22 mm. The leaf blade on adult specimens is 8 to 18 cm long and 1.2 to 2.8 cm wide, narrow-lanceolate to lanceolate, relatively thin, sometimes curved, with a tapering base of the blade and a 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 with a length of 5 to 12 mm in cross section is a compound inflorescence , which consists of dold-like partial inflorescences each with about seven flowers. The flower stalk is 5 to 7 mm long in cross section with a round stem.
The not blue-green floured or frosted flower bud is obovate or pear-shaped with a length of 5 to 8 mm and a diameter of 3 to 4 mm. The sepals form a calyptra , which is preserved until flowering ( anthesis ). The smooth calyptra is conical, about 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 10 to 17 mm long and 8 to 13 mm in diameter spherical to ovoid or urn-shaped and four-fan. 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 stockeri is the east coast of northern Queensland, from Townsville in the south to Cape York in the north.
Systematics
It was first described in 1987 under the name ( Basionym ) Eucalyptus stockeri by Dennis John Carr and Stella Grace Maisie Carr DJCarr & SGMCarr in Eucalyptus II - The rubber cuticle, and other studies of the Corymbosae , pp. 288-293. The type material has the inscription GCStocker 969, 9 Feb. 1973, Stannery Hills, c. 11.2 km south of Muchilba, 17 ° 13 ″ 145 ° 11 ″ 680 m in woodland. Holo: QRS. Iso: BRIS, FRI open . The specific epithet stockeri refers to the collector of the type material, GC Stocker . The new combination to Corymbia stockeri (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. 286.
From Corymbia Stockeri there are two subspecies:
- Corymbia stockeri (DJCarr & SGMCarr) KDHill & LASJohnson subsp. stockeri
- Corymbia stockeri subsp. peninsularis (KDHill & LASJohnson) Bean , Syn .: Corymbia hylandii subsp. peninsularis K.D. Hill & LASJohnson .
Individual evidence
- ↑ a b Specimen search results: Corymbia stockeri at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved February 14, 2013
- ↑ a b c d e APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved February 14, 2013
- ↑ a b c d e f Corymbia stockeri at EucaLink - A Web Guide to the Eucalypts . Retrieved February 14, 2013
- ↑ Corymbia stockeri at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed February 14, 2013.
- ↑ a b Rafaël Govaerts (Ed.): Corymbia stockeri. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved February 14, 2013.