Corymbia henryi

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Corymbia henryi
Corymbia henryi

Corymbia henryi

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

Corymbia henryi is a species ofthe myrtle family (Myrtaceae). It occurs in southeastern Queensland and in the adjacent northeastern New South Wales and is called "Large-leaved Spotted Gum" there.

description

Blossom with smooth flower cups and many white stamens

Appearance and leaf

Corymbia henryi grows as a tree that can reach heights of up to 30 meters. The bark is smooth, matt or shiny white to gray, reddish brown, 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.

In Corymbia henryi , heterophyllia is present. 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 30 cm long and about 1.5 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 can be curved or straight, is relatively thin and lanceolate to broadly lanceolate with a length of 15 to 28 cm and a width of 2.5 to 4.5 cm, with a tapering blade base and a 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 8 to 25 mm in cross section, there is a compound inflorescence consisting of doldy partial inflorescences each with about three flowers. The flower stalk is 3 to 4 mm long in cross section with a round or angular stalk.

The not blue-green floured or frosted flower bud is egg-shaped or obovate with a length of 10 to 13 mm and a diameter of 4 to 6 mm. The sepals form a calyptra that remains until flowering ( anthesis ) or falls off 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 in color.

Fruit and seeds

The stalked fruit is 12 to 20 mm long and 10 to 16 mm in diameter, egg-shaped to urn-shaped, often wrinkled 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 henryi in southeast Queensland , around Brisbane and northeast New South Wales .

Corymbia henryi thrives locally predominantly in dry, sparse hardwood forests on sandy soils .

Taxonomy

It was first described in 1977 by Stanley Thatcher Blake under the name ( Basionym ) Eucalyptus henryi S.T.Blake and the title Four new species of Eucalyptus in Austrobaileya , Volume 1 (1), p. 4. The type material has the inscription "Stafford near Brisbane, 8 Jan. 1956, STBlake 19889 (BRI, holo; NSW, FRI, CANB, K, iso) ” . 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 bloodwoods, 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 henryi × Corymbia citriodora were suspected in New South Wales.

use

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

Individual evidence

  1. ↑ a b Specimen search results: Corymbia henryi at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved February 13, 2013
  2. ↑ a b c d APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved February 13, 2013
  3. ↑ a b c d e f g h K. Hill: Corymbia henryi (STBlake) KDHill & LASJohnson at New South Wales Flora Online . National Herbarium of NSW, Royal Botanic Garden, Sydney. Retrieved February 13, 2013
  4. ↑ Corymbia henryi at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed February 13, 2013.
  5. ↑ Rafaël Govaerts (ed.): Corymbia henryi. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved February 13, 2013.
  6. ↑ Spotted Gum . Department of Agriculture, Fisheries and Forestry. Queensland Government . Retrieved February 10, 2016

Web links

Commons : Corymbia henryi  - collection of images, videos and audio files