Eucalyptus microcarpa
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| Eucalyptus microcarpa | ||||||||||||
| ( Maiden ) Maiden |
Eucalyptus microcarpa is a species ofthe myrtle family (Myrtaceae). It occurs in the southeast of Queensland , in the east, in the south and in the center of New South Wales , in the center and in the west of Victoria , and in the south of South Australia . There it is called "Green-leaved Box", "Black Box", "Brown Box", "Gray Box", "Narrow-leaved Gray Box", "Western Gray Box", "Southern Gray Box", "Inland Gray Box" , "Inland Box", or "Gum-topped Box".
description
Appearance and leaf
Eucalyptus microcarpa grows as a tree that can reach heights of up to 25 meters. The bark remains on the trunk and on the larger branches, is gray with whitish spots and fibrous and lumpy. At the top of the tree, it is smooth, gray, and peels in short ribbons.
In Eucalyptus microcarpa is Heterophyllie ago. The leaves are always divided into a petiole and a leaf blade. In seedlings , the leaf blade is egg-shaped with a length of 5 to 9 cm and a width of 2 to 5 cm and on the top and bottom slightly differently colored green or gray-green. On young specimens, the leaf blade is egg-shaped with a length of 9 to 15 cm and a width of 3 to 5 cm and on the top and bottom of the same color, matt green or gray-green. The leaf blade on middle-aged specimens with the same-colored green upper and lower sides is egg-shaped to broadly lanceolate with a length of 9 to 17.5 cm and a width of 2 to 4.5 cm. The leaf blades of the same color, glossy or dull green on the top and bottom, on adult specimens are 8 to 15 cm long and 1 to 2 cm wide, narrow-lanceolate to broad-lanceolate and straight, taper towards the blade base and have a pointed or pointed upper end. The cotyledons ( cotyledons ) are upside-kidney-shaped.
Inflorescence and flower
The flowering period extends from February to August. At the end of a 3 to 10 mm long, cross-sectionally flattened or angular inflorescence stem, there are approximately seven to eleven-flowered partial inflorescences in compound total inflorescences . If available, the flower stalks are 1 to 5 mm long, angular or stalk-round. The flower buds are ovoid to spindle-shaped with a length of 4 to 9 mm and a diameter of 2 to 4 mm. The sepals form a calyptra that remains in place until flowering ( anthesis ). The calyptra is conical, shorter or as long as the flower cup (hypanthium) and as wide as this. The flowers provide a lot of nectar. All stamens are more or less fertile (fertile).
Fruit and seeds
The seated or short-stalked fruit is 3 to 7 mm long and 3 to 5 mm in diameter, truncated, barrel-shaped, cylindrical, rarely hemispherical or egg-shaped, four-sided and often finely ribbed. The disc is flat or indented, the fruit compartments are level with the rim or are enclosed.
The black, brown, or gray seeds are flattened ovate, often with a pointed end. The hilum sits in the middle.
Occurrence
The natural range of Eucalyptus microcarpa is inland in southeast Queensland , in the east, in the center and in the south of New South Wales , in the center and in the west of Victoria and in the south of South Australia .
Eucalyptus microcarpa grows widespread and locally very frequently in grassy, sparse forests on moderately fertile clay soils .
Systematics
The first description was made in 1902 by Joseph Maiden as a variety of the species Eucalyptus hemiphloia under the name ( Basionym ) Eucalyptus hemiphloia var. Microcarpa Maiden in Transactions and proceedings and report, the Royal Society of South Australia , Volume 26, page 11. The type material , the label common in the three parts of the state . Maiden gave her the rank of a species Eucalyptus microcarpa (Maiden) Maiden in A Critical Revision of the Genus Eucalyptus , Volume 6 (8), p. 438 in 1923. Other synonyms for Eucalyptus microcarpa (Maiden) Maiden are Eucalyptus woollsiana RTBaker and Eucalyptus aff. odorata (W. Wimmera).
Natural hybrids of Eucalyptus microcarpa with Eucalyptus sideroxylon and Eucalyptus caleyi subsp. caleyi are known.
use
The heartwood of Eucalyptus microcarpa is light brown, finely structured, hard and very resistant. Its specific weight is around 825 kg / m³.
The wood is used, for example, for railroad ties and fences.
Individual evidence
- ↑ a b Specimen search results: Eucalyptus microcarpa at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved March 22, 2013
- ↑ a b c d e APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved March 22, 2013
- ↑ a b c d Eucalyptus microcarpa at EucaLink - A Web Guide to the Eucalypts . Retrieved March 22, 2013
- ↑ a b c d e f g h i j k K. Hill: Eucalyptus microcarpa (Maiden) Maiden at New South Wales Flora Online . National Herbarium of NSW, Royal Botanic Garden, Sydney. Retrieved March 22, 2013
- ↑ a b c d e f g h i j k l Inland Gray Box, Gray Box, Narrow-leaved Gray Box - Eucalyptus microcarpa in: DJ Boland, MIH Brooker, GM Chippendale, N. Hall, BPM Highland, RD Johnston, DA Kleinig, MW McDonald & JD Turner (editors): Forest Trees of Australia . CSIRO Publishing. 5th Edition 2006. pp. 462-463 at Google Books . Retrieved March 22, 2013
- ↑ Eucalyptus microcarpa at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed March 22, 2013.
- ↑ Rafaël Govaerts (Ed.): Eucalyptus microcarpa. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved March 22, 2013.