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Eucalyptus (/ ˌ juː k ə ˈ l ɪ p t ə s /) is a genus of more than 700 species of flowering plants in the family Myrtaceae. Most species of Eucalyptus are trees, often mallees, and a few are shrubs. Along with several other genera in the tribe Eucalypteae, including Corymbia and Angophora, they are commonly known as eucalypts or "gum trees".
- Kino
Copious flow of kino from a wound near the base of the trunk...
- Eucalyptus Regnans
Eucalyptus regnans, known variously as mountain ash, swamp...
- List of Eucalyptus Species
Eucalyptus abdita Brooker & Hopper Eucalyptus absita...
- Kino
- Description
- Animals and Eucalyptus
- Dangers
- Fire
- Cultivation and Uses
- Problems Caused by Eucalypts
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Flowers and leaves
Eucalypts have special flowers and fruitsthat no other trees have. When it flowers a bud cap made of petals grows around the flower until it is ready to open. Then the bud cap falls off to reveal a flower with no petals. The woody fruits are called gumnuts. They are roughly cone-shaped and open at one end to release the seeds. Nearly all eucalypts are evergreenbut some tropical species lose their leaves at the end of the dry season. The leaves are covered with oil glands. These oils are often...
Bark
The barkdies every year. In smooth-barked trees most of the bark falls off the tree, leaving a smooth surface that is often colourfully marked. With rough-barked trees the dead bark stays on the tree and dries out. Many kinds of eucalyptus trees have smooth bark at the top but rough bark lower down. These different kinds of bark are used to arrange the eucalypts into groups – this is useful because there are hundreds of kinds of eucalypts, and breaking down the group in this way makes the gro...
Height
Today, specimens of the Australian Mountain Ash are among the tallest trees in the world. They grow at up to 92 metres in height, and are the tallest of all flowering plants: taller trees such as the coast redwood are all conifers. There is evidence that at the time of European settlement of Australia some Mountain Ash were indeed the tallest plants in the world.
An oil found in eucalyptus leaves is a strong, natural disinfectant, which is used in some medicines, but can be poisonous if too much is taken. Several marsupials, such as koalas and some possums, are partly resistant to it. These animals can tell which plants are safe to eat by their smell. Eucalypts make a lot of nectar, which is food for many i...
Eucalypts have a habit of dropping entire branches off as they grow. Eucalyptus forests are littered with dead branches. The Australian Ghost Gum Eucalyptus papuana is sometimes called the "widow maker", due to the high number of tree-felling workers who were killed by falling branches. Many deaths were actually caused by simply camping under them,...
On warm days eucalyptus oil vapour rises above the bush to create the well-known distant blue haze of the Australian landscape. Eucalyptus oil catches fire very easily, and bush firescan travel quickly through the oil-rich air of the tree crowns. The dead bark and fallen branches are also flammable. Eucalypts are well adapted for periodic fires – i...
Eucalyptus have many uses which have made them important. Because of their fast growth, the main benefit of these trees is the wood. They provide many uses, such as planting in parks and gardens, timber, firewood and pulpwood. Fast growth also makes eucalypts suitable as windbreaks. Eucalypts draw a very large amount of water from the soil. They ha...
Eucalypts were first introduced to the rest of the world by Sir Joseph Banks, botanist on the Cookexpedition in 1770. They have since been introduced to many parts of the world. Several species have become invasive (spreading out of the area they were planted in) and may cause problems for local wildlife.
Eucalyptus forest in East Gippsland, Victoria. Mostly Eucalyptus albens(white box).Eucalyptus cinerea x pulverulenta– National Botanical Gardens CanberraEucalyptus leuxoxylon'Rosea'Eucalyptus gallFradin M. & Day J.F. 2002. Comparative efficacy of insect repellents against mosquito bites. New England J. Med. 347: 13-18.Jahn G.C. 1991a. Ant repellent activity of eucalyptus extracts in choice tests. Insecticide & Acaricide Tests16: 293.Jahn G.C. 1991b. Evaluation of the repellent activity of eucalyptus oil to big-headed ants. Insecticide & Acaricide Tests16: 293-294.Jahn G.C. 1992. Effect of Eucalyptus dives extracts on Pheidole megacephala (F.) (Hymenoptera: Formicidae). Proc. Hawaiian Entomol. Soc. 31: 79-81.EUCLID Sample Archived 2009-10-13 at the Wayback Machine, CSIROThe Eucalyptus Page Archived 2006-11-25 at the Wayback MachineEucaLink Archived 2010-06-09 at the Wayback MachineEucalyptus ( / ˌjuːkəˈlɪptəs /) is a genus of more than 700 species of flowering plants in the family Myrtaceae. Most species of Eucalyptus are trees, often mallees, and a few are shrubs. Along with several other genera in the tribe Eucalypteae, including Corymbia and Angophora, they are commonly known as eucalypts or "gum trees".
Mar 1, 2024 · eucalyptus, (genus Eucalyptus ), large genus of more than 660 species of shrubs and tall trees of the myrtle family ( Myrtaceae ), native to Australia, Tasmania, and nearby islands. In Australia the eucalypti are commonly known as gum trees or stringybark trees.
- The Editors of Encyclopaedia Britannica
Eucalypt is any woody plant with capsule fruiting bodies belonging to one of seven closely related genera (of the tribe Eucalypteae) found across Australia: Eucalyptus, Corymbia, Angophora, Stockwellia, Allosyncarpia, Eucalyptopsis and Arillastrum. In Australia they are commonly known as gum trees.
Eucalyptus deglupta is a fast-growing tree that typically reaches a height of 60–75 m (197–246 ft) with the trunk up to 240 cm (94 in) in diameter and with buttresses up to 4 m (13 ft) high. It has smooth, orange-tinted bark that sheds in strips, revealing streaks of pale green, red, orange, grey, and purplish brown.
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