Eucalyptus propinqua
Eucalyptus propinqua
Eucalyptus propinqua is a flowering plant in the myrtle family ( Myrtaceae ). It occurs in the central and northern coast of New South Wales and the southern section of the east coast of Queensland, where it is "Grey Gum", "Small fruited Grey Gum " or "Grey Irongum " called.
Description
Appearance and leaf
Eucalyptus propinqua grows as a tree reaching heights of growth of up to 40 meters. The bark is smooth on the entire tree is gray or gray - brown and peels off in large plates or patches. The bark of young branches is green. Neither in the marrow of the young branches still in the bark, there are oil glands.
In Eucalyptus propinqua is available Heterophyllie. The leaves are always divided into petiole and leaf blade. The leaf blade is lanceolate in young specimens and shiny pale green. At middle-aged specimens, the leaf blade is at a length of about 14 cm and a width of about 3.5 cm also lanceolate, straight, entire and shiny pale green. The petioles of adult specimens are 10-15 mm long and narrow flattened or channel-shaped. The leaf blade of adult specimens with different colored glossy dark green upper and lower sides is lanceolate, with a length of 8 to 14 cm and a width of 1.5 to 2.5 cm, relatively thick, straight and tapering to the Spreitenbasis and has a pointed upper end. The barely visible lateral nerves go at small distances from at an obtuse angle from the midrib. The cotyledons ( cotyledons ) are wrong kidney-shaped.
Inflorescence and flower
Page Constantly on a terete with a length of 5 to 15 mm in cross section inflorescence stem are about seven, eleven or multiflorous part inflorescences in total composite inflorescences. The flower stalks are 2-5 mm long and terete. The flower buds are ovoid or globose with a length of 4 to 5 mm and a diameter of 3 to 4 mm and not blue green flour dusted or frosted. The sepals form a calyptra, which drops 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 off- white.
Fruit
The stalked crop is hemispherical or conical, and three to vierfächrig at a length of 2 to 5 mm and a diameter of 3 to 6 mm. The disc is flat or raised, the fruit of subjects stand 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 grows locally common in moist coastal forests on barren 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, p 541, Plate XLIII. The type material has the caption "From the Hawkesbury River northwards at least as ar as the Tweed River. (...) Going West It has been found on teh eastern slopes of the Dividing Range. "On. A synonym for Eucalyptus propinqua H.Deane & Maiden is Eucalyptus propinqua propinqua var H.Deane & Maiden.
Use
The heartwood of Eucalyptus propinqua is red and very hard. The wood of Eucalyptus propinqua is used as a heavy timber for the construction of bridges, floors and decks, as a stake or railway sleeper.