Corymbia henryi
Corymbia henryi
Corymbia henryi is a flowering plant in the myrtle family ( Myrtaceae ). It comes in southeastern Queensland and the adjacent northeastern New South Wales before and is there called "Large -leaved Spotted Gum".
Description
Appearance and leaf
Corymbia henryi grows as a tree reaching heights of growth up to 30 meters. The bark is smooth on the whole tree, matt or glossy white to gray, brown, pink or cream- white and peels in small, polygonal patches. The small branches have green bark. In bone marrow oil glands are present in the bark not.
In Corymbia henryi occurs Heterophyllie. The leaves are always divided into petiole and leaf blade. The leaf blade of young specimens is lanceolate to ovate, glossy green and has simple hair and stiff glandular hairs. At middle-aged specimens, the leaf blade is elliptic to ovate, straight, entire and shiny green with a length of about 30 cm and a width of about 1.5 cm. The petiole of adult specimens is narrow flattened or channel-shaped with a length of 15 to 25 mm. The leaf blade of adult specimens can be curved or straight, is relatively thin and at a length of 15 to 28 cm and a width of 2.5 to 4.5 cm lanceolate to broadly lanceolate, with tapering Spreitenbasis and bespitztem upper end. Your upper leaf surface and bottom is evenly green satin finish. The barely visible lateral nerves go at small distances from an acute or obtuse angle from the midrib. On each half of the sheet, there is a strong, consistent, so-called intra- marginal nerve; he runs along at a short distance on the leaf margin. The cotyledons ( cotyledons ) are nearly circular.
Inflorescence and flower
Terminally on a terete with a length of 8 to 25 mm in cross section inflorescence stem is a composite inflorescence, consisting of doldigen part inflorescences, each with about three flowers. The flower stem is at a length of 3 to 4 mm in cross section terete to angular.
The non- blue - green floured or frosted flower bud is ovate or obovate with a length of 10 to 13 mm and a diameter of 4 to 6 mm. The sepals form a calyptra, which is maintained until flowering ( anthesis ) or falls early. The smooth calyptra is hemispherical or conical, as wide as the smooth flower cup ( hypanthium ) and as long as this. The flowers are white or cream-colored.
Fruit and seeds
The fruit is stalked in a length of 12 to 20 mm and a diameter of 10 to 16 mm to egg -shaped box, often wrinkled and three to vierfächerig. The disc is pressed, the fruit trays are included.
The regular and flattened, kneecaps or ovoid seed has a net-like, matte to satin, red or red-brown seed coat. The hilum is located at the upper end of the seed.
Occurrence
The natural range of Corymbia henryi the south-east Queensland to Brisbane, as well as the north-east of New South Wales.
Corymbia henryi thrives locally prevalent in dry, clear sclerophyllous forests on sandy soils.
Taxonomy
The first description was in 1977 by Stanley Thatcher Blake under the name ( basionym ) Eucalyptus henryi STBlake and the title Four new species of Eucalyptus in Austrobaileya, Volume 1 (1 ), pp. 4 The type material has the caption " Stafford near Brisbane, 8. Jan. 1956, STBlake 19889 (BRI, holo, NSW, FRI, CANB, K, iso ) "on. The new combination to Corymbia henryi ( STBlake ) KDHill & LASJohnson took place in 1995 under the title Systematic studies in the Eucalypts. 7 A revision of the blood woods, genus Corymbia ( Myrtaceae ) in Telopea, Volume 6, Issue 2-3, p 396
Hybrids of Corymbia henryi × Corymbia torelliana are known from Queensland, those of Corymbia citriodora Corymbia henryi × were suspected in New South Wales.
Use
The heartwood of Corymbia henryi is light brown to dark reddish brown and has a specific gravity of about 1010 kg / m³. It is used as construction and furniture wood and is used for example in shipbuilding and the manufacture of tool handles, railway sleepers and flooring.