Corymbia maculata

Corymbia maculata
	Corymbia maculata
Systematics
Order :	Myrtle-like (Myrtales)
Family :	Myrtle family (Myrtaceae)
Subfamily :	Myrtoideae
Tribe :	Eucalypteae
Genre :	Corymbia
Type :	Corymbia maculata
Scientific name
	Corymbia maculata
	( Hook. ) KDHill & LASJohnson

Corymbia maculata is a species of plant withinthe myrtle family (Myrtaceae). It occurs on the east coast of Australia , from southeast Queensland to eastern Victoria , and is called "Spotted Gum" there.

description

Eucalyptus maculata , by Edward Minchen

Appearance and leaf

Corymbia maculata grows as a tree that reaches heights of up to 45 meters. The bark is smooth, matt or glossy white to gray, pink or creamy white all over the tree and peels in small, polygonal patches. The small twigs have a green bark. There are oil glands in the pith, but not in the bark.

At Corymbia maculata is Heterophyllie ago. The leaves are always divided into a petiole and a leaf blade. The leaf blade on young specimens is lanceolate to ovate, shiny green and has simple hairs and stiff glandular hairs. On medium-old specimens, the leaf blade is about 23 cm long and about 0.95 cm wide, elliptical to ovate, straight, entire and shiny green. The petiole on adult specimens is narrowly flattened or channel-shaped with a length of 15 to 25 mm. The leaf blade on adult specimens is relatively thin, with a length of 10 to 21 cm and a width of 1.5 to 3 cm narrow-lanceolate to lanceolate, straight, with a tapering blade base and pointed upper end. The top and bottom of the leaves are evenly silk-matt green. The side nerves, which are barely recognizable, branch off from the median nerve at small intervals at an acute or 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 20 mm and a cross-section with a round pedicel stands a compound inflorescence , which consists of dold-like partial inflorescences each with about three flowers. The flower stalk is 3 to 7 mm long in cross section with a round stem.

The not blue-green floured or frosted flower bud is ovoid or obovate with a length of 8 to 11 mm and a diameter of 6 to 7 mm. The sepals form a calyptra , which can remain until flowering ( anthesis ) or fall off early. The smooth calyptra is hemispherical or beak-shaped, shorter than the smooth flower cup (hypanthium) and as wide as this. The flowers are white or cream in color.

Fruit and seeds

The stalked fruit is 10 to 14 mm long and 9 to 11 mm in diameter, egg-shaped or slightly urn-shaped and three to four-fold. 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 maculata is the east coast of Australia from southeast Queensland to the extreme east of Victoria , as well as the adjacent table country in the east and northeast of New South Wales to the west .

Corymbia maculata grows dominantly in the sparse forest on less fertile and dry soils over shale .

Taxonomy

It was first described in 1844 by William Jackson Hooker under the name ( Basionym ) Eucalyptus maculata Hook. in Icones Plantarum , Volume, Plate 619. The type material has the inscription “Interior of N. Holland, Fraser. Maitland, Liverpool & Newcastle, Backhouse ” . The new combination to Corymbia maculata (Hook.) 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, Issue 2-3, p. 393. The specific epithet maculata is derived from the Latin word maculatus for blotchy, which indicates the color of the bark. Another synonym for Corymbia maculata (Hook.) KDHill & LASJohnson is Eucalyptus maculata Hook. var. maculata .

Hybrids of Corymbia maculata × Corymbia gummifera are known from southern New South Wales and were named Corymbia nowraensis (after the city of Nowra ). Hybrids of Corymbia maculata × Corymbia intermedia and Corymbia maculata × Corymbia citriodora have been identified in New South Wales.

use

Corymbia maculata is an ornamental plant in parks and on roadsides. There are varieties.

The heartwood of Corymbia maculata is light brown to dark red-brown and has a specific weight of about 1010 kg / m³. The wood is used as construction and furniture wood and is used, for example, in boat building and for the production of tool handles, railway sleepers and floors.