eucalyptus

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eucalyptus

(yo͞o'kəlĭp`təs): see myrtlemyrtle,
common name for the Myrtaceae, a family of shrubs and trees almost entirely of tropical regions, especially in America and Australia. The family is characterized by leaves (usually evergreen) containing aromatic volatile oils. Many have showy blossoms.
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eucalyptus

eucalyptus

Eucalyptus tress are some of the tallest in the world. They don’t like cold. The bark is usually peeling off in loose stringy or papery strips. Young leaves are often blue-grey on square stems. Mature leaves are shiny, very thin green ovals on round stems. Creamy white flowers, sometimes pink. Leaves can be made into tea or steam distilled to extract oil, which is a powerful antiseptic used to treat gum disease, burns, insect repellant. The essential oil, breathed in a steam, will help clear the nasal passages, as will the steam from boiling the leaves. A small drop on the tongue eases nausea. Oil-soaked cloths placed in cabinets and closets keeps roaches and insects away. Originally from Australia, this fast-growing invasive tree is taking over southern California.

Eucalyptus

 

a genus of plants of the family Myrtaceae. The genus consists mainly of evergreen trees frequently reaching a height of 100 m; there are some shrubs. The arrangement and shape of the leaves vary according to the age of the plant. The leaves are always entire, and they are usually fragrant owing to the presence of essential oil. The flowers are regular and bisexual. There are numerous stamens, and the ovary is inferior. The fruit is a capsule consisting of a truncated woody calyx tube to which the ovary is fused.

There are more than 525 species of eucalyptus; they are commonly found in Australia and Tasmania, as well as on neighboring islands. The USSR has more than 30 cultivated species, growing mainly on the Black Sea coast of the Caucasus. Almost all subtropical and tropical countries cultivate eucalypts, since the plants yield valuable wood and grow rapidly. Also of economic value are the leaves, which yield essential oil, and the bark, which yields tannins. Eucalyptus oil and eucalyptus teas or tinctures are used medicinally as antiseptic and anti-inflammatory rinses and inhaiants to treat infections of the upper respiratory tract; the medicines are also used to treat wounds and some gynecological disorders. A eucalyptus tincture may also be prescribed to treat inflammation of the mouth and, sometimes, as a sedative.

REFERENCES

Pilipenko, F. S. “Evkalipt—Eucalyptus L’Herit.” In Derev’ia i kustarniki SSSR, vol. 5. Moscow-Leningrad, 1960.
Maiden, J. H. A Critical Revision of the Genus Eucalyptus, vols. 1–8, parts 1–75. Sydney, 1903–33.
Blakely, W. F. A Key to the Eucalypts, 3rd ed. Canberra, 1965.
Pryor, L. D., and L. A. S. Johnson. A Classification of the Eucalypts. Canberra, 1971.
Johnson, L. A. S. “Presidential Address: Evolution and Classification in Eucalyptus.” Proceedings of the Linnean Society of New South Wales, 1972, vol. 97, part 1, no. 429.

M. E. KIRPICHNIKOV

Eucalyptus

[‚yü·kə′lip·təs]
(botany)
A large genus of evergreen trees belonging to the myrtle family (Myrtaceae) and occurring in Australia and New Guinea.

eucalyptus

Wood of the eucalyptus tree, native to Australia and Tasmania, but many species now are grown elsewhere in the world; the physical characteristics and properties vary considerably with the species. Also see gumwood.

eucalyptus

, eucalypt
any myrtaceous tree of the mostly Australian genus Eucalyptus, such as the blue gum and ironbark, widely cultivated for the medicinal oil in their leaves (eucalyptus oil), timber, and ornament
References in periodicals archive ?
2006) examined the effects of fire severity on soil water repellency in eucalypt forested catchments near Sydney, burnt in 2001 and 2003.
In another experiment, eucalypts grown in infertile soil produced leaves too tough for beetle larvae to eat.
Amelioration of soil acidity and accumulation of organic matter and nutrients in surface soils under scattered eucalypt trees might therefore be considered to have a positive effect in grazing landscapes in northern NSW by helping to maintain soil condition.
Eucalypt wood (Eucalyptus globulus) is one of the cheapest woods on the market.
The rapid growth of eucalypts like the mountain ash, river red gum, and the Tasmanian blue gum (Eucalyptus globulus) has caused them to be widely planted throughout the tropics and subtropics, both for timber and for fuel," said author Herbert Edlin in the "Illustrated Encyclopedia of Trees.
Butcher PA, McDonald MW, Bell JC (2009) Congruence between environmental parameters, morphology and genetic structure in Australia's most widely distributed eucalypt, Eucalyptus camaldulensis.
The analysis of more than 100 pollen fossil samples led the team to believe that eucalypts developed the buds about 62 million years ago, dating the bushfire activity in Australia back to more than 60 million years ago.
This will translate into a substantial increase in plantation productivity, as millions of tonnes of pulp are produced globally each year from eucalypt plantations.
an increase in the forest area and tree maturity, resulting from 2008 tree acquisitions; - an increase in biological growth within plantations under management - in certain of our planted eucalypt plantations, Poyry recorded a standing volume of almost 150 cubic metres ("m3") per ha aged only three and half years.
Bill Baker and I quietly slipped off our boots and placed them at the base of a eucalypt tree, planning to make a short stalk.