Eucalyptus olida

Eucalyptus Olida

Eucalyptus Olida is a flowering plant within the myrtle family ( Myrtaceae ). It occurs in the northern tableland ago in northeastern New South Wales, where it is called " Manna Gum".

Description

Appearance and leaf

Eucalyptus Olida grows as a tree reaching heights of growth of up to 20 meters. The bark remains on the entire trunk and larger branches is gray to gray - brown and fibrous to short-fibred. On the upper parts of the tree it is white or gray and peels in long strips. 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 Olida is available Heterophyllie. The leaves are always divided into petiole and leaf blade. In young specimens the dull gray - green leaf blade is ovate with a length of about 7 cm and a width of about 5 cm. At middle-aged specimens, the dull gray - green leaf blade also ovoid, curved like a sickle and entire. The petiole of adult specimens is narrow flattened or channel-shaped. The on top and bottom are the same color matt or glossy green leaf blade of adult specimens is at a length of 8 to 17 cm and a width of 1.2 to 2.6 cm wide, lanceolate, relatively thick, curved like a sickle, tapering to Spreitenbasis back and has a pointed upper end. The raised lateral nerves go at large distances from an acute or very acute angle from the midrib. The cotyledons ( cotyledons ) are kidney-shaped.

Inflorescence and flower

Constantly on a page with a length of 8 to 18 mm and a diameter of up to 3 mm terete in cross section, narrowly flattened or angular inflorescence stem are in a simple inflorescence seven to eleven or more flowers together. The 2-6 mm long flower stems are terete. The non- blue-green floured or frosted flower buds are club-shaped with a length of 3 to 5 mm and a diameter of 2 to 3 mm. The sepals form a calyptra, which remains available until flowering ( anthesis ). The smooth calyptra is hemispherical, shorter than or as long as the smooth flower cup ( hypanthium ) and as wide as this one. The flowers are white or off- white.

Fruit

The stalked crop is tapered in a length of 5 to 8 mm and a diameter of 5 to 7 mm, hemispherical or pear-shaped, and four-to fünffächrig. The disc is flat, the fruit trays are included, or on the height of the rim.

Occurrence and risk

The natural range of Eucalyptus Olida is the area from Timbarra Plateau to the Gibraltar Range in northeastern New South Wales, which includes the National Parks Timbarra, Washpool and Gibraltar Range.

Eucalyptus Olida in a few places, but there often, in dry sclerophyll forest or open woodland on shallow, infertile soils on acidic granite.

Eucalyptus Olida was designated in 1998 in the IUCN Red List as a rare ( "rare " ) type. In the Threatened Flora selection of Australian Native Plants Society ( Australia) = ANPSA is after the ROTAP coding system 2RCA ("2 - It has a range covering less than 100 km, R - Rare in the wild, but with no current identifiable threat, Ca - Occurs within proclaimed reserves and the known population Exceeds 1000 plants " ) before.

Taxonomy

The first description of Eucalyptus Olida in 1990 by Lawrence Alexander Sidney Johnson and Kenneth D. Hill under the title New taxa and Combinations in Eucalyptus and Angophora ( Myrtaceae ) in Telopea, Volume 4, Issue 1, p 103 The type material has the caption " NEW SOUTH WALES: Northern Tablelands 4.2 km from the Gwydir Highway on the north-west fire trail, Gibraltar Range Natl. Park ( 29 ° 31 'S 152 ° 15'E ) "on.

Use

From the leaves of Eucalyptus Olida essential oils are distilled, which are used as flavor and fragrance, also in the perfume industry. With 98% of the leaves have has a very high content of cinnamic acid ethyl ester. The oil content is very high with 2 to 6%.

The dried leaves are used as a spice in the Bush -food cuisine, especially with fruit and herbal teas. The leaves act as a powerful antioxidant.