Eucalyptus propinqua
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Eucalyptus propinqua |
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| H.Deane & Maiden |
Eucalyptus propinqua is a species ofthe myrtle family (Myrtaceae). It occurs on the central and northern coastline of New South Wales and on the southern section of the east coast of Queensland and is called "Gray Gum", "Small fruited Gray Gum" or "Gray Irongum" there.
description
Appearance and leaf
Eucalyptus propinqua grows as a tree that can reach heights of up to 40 meters. The bark is smooth all over the tree, is gray or gray-brown and peels in large sheets or patches. The bark of the small branches is green. There are no oil glands in the marrow of the young branches or in the bark.
In Eucalyptus propinqua is Heterophyllie ago. The leaves are always divided into a petiole and a leaf blade. The leaf blade on young specimens is lanceolate and shiny pale green. On medium-old specimens, the leaf blade is about 14 cm long and about 3.5 cm wide and also lanceolate, straight, with entire margins and shiny pale green. The leaf stalks on adult specimens are 10 to 15 mm long and narrowly flattened or channel-shaped. The leaf blade on adult specimens with different colored, glossy, dark green upper and lower sides is 8 to 14 cm long and 1.5 to 2.5 cm wide, lanceolate, relatively thick, straight and tapers towards the base of the blade and has a pointed tip top end. The side nerves, which are barely visible, leave the median nerve at small intervals at an obtuse angle. The cotyledons ( cotyledons ) are wrong kidney-shaped.
Inflorescence and flower
On the side of an inflorescence shaft with a length of 5 to 15 mm in cross section, there are approximately seven, eleven or multi-flowered partial inflorescences in compound total inflorescences . The flower stalks are 2 to 5 mm long and stalk-round. With a length of 4 to 5 mm and a diameter of 3 to 4 mm, the flower buds are egg-shaped or spherical and not floured or frosted blue-green. The sepals form a calyptra that falls off early. The smooth calyptra is hemispherical or conical, as long or twice as long as the smooth or ribbed flower cup (hypanthium) and as wide as this. The flowers are white or creamy white.
fruit
The stalked fruit is 2 to 5 mm long and 3 to 6 mm in diameter hemispherical or conical and three- to fourfaced. The disc is flat or raised, the fruit compartments stick out.
Occurrence
The natural range of Eucalyptus propinqua is the coast of New South Wales , north of Wyong , and the southern section of the east coast of Queensland .
Eucalyptus propinqua often grows locally in moist coastal forests on sterile or moderately fertile soils .
Taxonomy
The first description of Eucalyptus propinqua was made in 1896 by Henry Deane and Joseph Maiden under the title The gray gum of the north coast districts in Proceedings of the Linnean Society of New South Wales , Series 2, Volume 10, page 541, Table XLIII. The type material has the inscription “ From the Hawkesbury River northwards at least as ar as the Tweed River. (...) Going West it has been found on the eastern slopes of the Dividing Range. " on. A synonym for Eucalyptus propinqua H.Deane & Maiden is Eucalyptus propinqua H.Deane & Maiden var. Propinqua .
use
The heartwood of Eucalyptus propinqua is red and very hard. The wood from Eucalyptus propinqua is used as heavy construction timber for building walkways , floors and decks , as stakes or railroad ties.
Individual evidence
- ↑ a b c Specimen search results: Eucalyptus propinqua at Australia's Virtual Herbarium. Council of Heads of Australasian Herbaria . Retrieved April 17, 2013
- ↑ a b c APNI = Australian Plant Name Index . Center for Plant Biodiversity Research. Australian Government. Retrieved April 17, 2013
- ↑ a b c d e f g h i j K. Hill: Eucalyptus propinqua ( H. Deane & Maiden) at New South Wales Flora Online . National Herbarium of NSW, Royal Botanic Garden, Sydney. Retrieved April 17, 2013
- ↑ a b c d e f g h i j k l m n o p q Eucalyptus propinqua at EucaLink - A Web Guide to the Eucalypts . Retrieved April 17, 2013.
- ↑ Eucalyptus propinqua at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed April 17, 2013.
- ↑ Rafaël Govaerts (ed.): Eucalyptus propinqua. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved April 17, 2013.
- ↑ Gray Gum - Eucalyptus propinqua, Eucalyptus punctata. Timber.net.au - The Australian Timber Database. ( Memento of the original from February 18, 2011 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Retrieved April 17, 2013
