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Ledol
Ledol is a poisonous sesquiterpene that can cause cramps, paralysis, and delirium. Caucasian peasants used ''Rhododendron'' plants for these effects in shamanistic rituals. Sources Ledol is found in labrador tea, an herbal tea (not a true tea) made from three closely related species: * ''Rhododendron tomentosum'' – Northern Labrador tea, previously ''Ledum palustre'' * '' Rhododendron groenlandicum'' – Bog Labrador tea, previously ''Ledum groenlandicum'' or ''Ledum latifolium'' * ''Rhododendron columbianum ''Rhododendron columbianum'', commonly known as western Labrador tea, swamp tea, or muskeg tea, is a shrub that is widespread in the western United States and in western Canada, reported from British Columbia, Alberta, Washington, Oregon, Idaho, ...'' – Western Labrador tea, or trapper's tea, previously ''Ledum glandulosum'' Ledol is also found in the essential oil of priprioca at a concentration of around 4%. Ledol is also found to varying concentrations in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poison
Poison is a chemical substance that has a detrimental effect to life. The term is used in a wide range of scientific fields and industries, where it is often specifically defined. It may also be applied colloquially or figuratively, with a broad sense. Whether something is considered a poison may change depending on the amount, the circumstances, and what living things are present. Poisoning could be accidental or deliberate, and if the cause can be identified there may be ways to neutralise the effects or minimise the symptoms. In biology, a poison is a chemical substance causing death, injury or harm to organisms or their parts. In medicine, poisons are a kind of toxin that are delivered passively, not actively. In industry the term may be negative, something to be removed to make a thing safe, or positive, an agent to limit unwanted pests. In ecological terms, poisons introduced into the environment can later cause unwanted effects elsewhere, or in other parts of the fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corymbia Maculata
''Corymbia maculata'', commonly known as spotted gum, is a species of medium-sized to tall tree that is endemic to eastern Australia. It has smooth, mottled bark, lance-shaped to curved adult leaves, flower buds usually in groups of three, white flowers and urn-shaped or barrel-shaped fruit. Description ''Corymbia maculata'' is a tree that typically grows to a height of and forms a lignotuber. It has smooth mottled pinkish grey or bluish grey, often dimpled bark that is shed in small, irregular flakes. Young plants and coppice regrowth have leaves that are glossy green, broadly egg-shaped to lance-shaped, long and wide and petiolate. Adult leaves are the same shade of green on both sides, lance-shaped or curved, long and wide, tapering to a petiole long. The flower buds are arranged in leaf axils on a branched peduncle long, each branch of the peduncle with three, rarely seven, buds on pedicels long. Mature buds are oval to pear-shaped, long and wide with a hemispher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalyptus Melliodora
''Eucalyptus melliodora'', commonly known as yellow box, honey box or yellow ironbark, is a species of medium-sized to occasionally tall tree that is endemic to south-eastern, continental Australia. It has rough, flaky or fibrous bark on part or all of the trunk, smooth greyish to yellowish bark above. The adult leaves are lance-shaped to egg-shaped, the flower buds are arranged in groups of seven and the fruit is more or less hemispherical. Description ''Eucalyptus melliodora'' is a tree that typically grows to a height of and forms a lignotuber. The bark is variable ranging from smooth with an irregular, short stocking, to covering most of the trunk, fibrous, dense or loosely held, grey, yellow or red-brown, occasionally very coarse, thick, dark brown to black. The smooth bark above is shed from the upper limbs to leave a smooth, white or yellowish surface. Young plants and coppice regrowth have lance-shaped to elliptic leaves that are long and wide and petiolate. Adult lea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalyptus Maidenii
''Eucalyptus globulus'' subsp. ''maidenii'', commonly known as Maiden's gum, is a subspecies of tree that is endemic to southeastern Australia. It has mostly smooth bark with some persistent slabs of old bark at the base, juvenile leaves with one glaucous side, lance-shaped adult leaves, flower buds arranged in groups of seven, white flowers and conical, pedicellate, sometimes glaucous fruit that is more or less square in cross-section Description ''Eucalyptus globulus'' subsp. ''maidenii'' is a tree that typically grows to a height of and forms a lignotuber. The bark is mostly smooth, shedding in long strips to leave a white or greyish surface. There is sometimes rough, partially shed bark at the base of the trunk and ribbons of shedding bark in the upper branches. Young plants and coppice regrowth have stems that are more or less square in cross-section, with a prominent wing on each corner. The juvenile leaves are sessile, arranged in opposite pairs, elliptic to egg-shaped, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalyptus Globulus
''Eucalyptus globulus'', commonly known as southern blue gum or blue gum, is a species of tall, evergreen tree endemic to southeastern Australia. This ''Eucalyptus'' species has mostly smooth bark, juvenile leaves that are whitish and waxy on the lower surface, glossy green, lance-shaped adult leaves, glaucous, ribbed flower buds arranged singly or in groups of three or seven in leaf axils, white flowers and woody fruit. There are four subspecies, each with a different distribution across Australia, occurring in New South Wales, Victoria and Tasmania. The subspecies are the Victorian blue gum, Tasmanian blue gum, Maiden's gum, and Victorian eurabbie. Description ''Eucalyptus globulus'' is a tree that typically grows to a height of but may sometimes only be a stunted shrub, or alternatively under ideal conditions can grow as tall as , and forms a lignotuber. The bark is usually smooth, white to cream-coloured but there are sometimes slabs of persistent, unshed bark at the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalyptus Diversicolor
''Eucalyptus diversicolor'', commonly known as karri, is a species of flowering plant in the family Myrtaceae and is endemic to the south-west of Western Australia. It is a tall tree with smooth light grey to cream-coloured, often mottled bark, lance-shaped adult leaves and barrel-shaped fruit. Found in higher rainfall areas, karri is commercially important for its timber. Description ''Eucalyptus diversicolor'' is a tall forest tree that typically grows to a height of but can reach as high as , making it the tallest tree in Western Australia and one of the tallest in the world. As of February 2019, the tallest known living karri is just over 80m tall. A tree south of Pemberton, known as 'The Tyrant' is 69m tall and 11.5m in girth and contains approximately 220m³ of wood in its trunk and is thought to be the largest karri by wood volume. The bark on the trunk and branches is smooth, grey to cream-coloured or pale orange, often mottled and is shed in short ribbons or small ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalyptus Dealbata
''Eucalyptus dealbata'', known as the tumbledown red gum or hill redgum, is a species of small tree that is endemic to eastern Australia. It has mostly smooth, white to grey or brownish bark, lance-shaped to egg-shaped adult leaves, flower buds in groups of between seven and eleven, white flowers and hemispherical fruit with the valves extended well beyond the rim of the fruit. Description ''Eucalyptus dealbata'' is a tree that typically grows to a height of and forms a lignotuber. It has smooth white to grey or brownish bark, sometimes with persistent slabs of rough grey bark. Young plants and coppice regrowth have leaves that are egg-shaped, bluish green, long and wide. Adult leaves are the same dull bluish green on both sides, lance-shaped to egg-shaped, long and wide on a petiole long. The buds are arranged in groups of seven or nine, rarely eleven, in leaf axils on an unbranched peduncle long, the individual buds on a pedicel long. Mature buds are oval to diamond-s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalyptus Cladocalyx
''Eucalyptus cladocalyx'', commonly known as sugar gum, is a species of eucalypt tree found in the Australian state of South Australia. It is found naturally in three distinct populations - in the Flinders Ranges, Eyre Peninsula and on Kangaroo Island. Description The tree notable for its mottled colourful yellow to orange bark, strongly discolourous leaves and inflorescences grouped on leafless branchlets inside the tree crown. The old bark is smooth and grey, shedding in irregular patches to expose the fresh yellowy-brown bark. Flowers are creamy-white in summer. The capsules are barrel to urn shaped. Sugar gums from the Flinders Ranges reach up to in height and have the classic "gum" habit - with a straight trunk having a diameter at breast height (dbh) of and steep branches occurring about halfway up. Each main branch ends with its own little canopy. They are commonly cultivated as farm windbreaks and for timber. However, Eyre Peninsula and Kangaroo Island tree ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalyptus Citriodora
''Corymbia citriodora'', commonly known as lemon-scented gum and other common names, is a species of tall tree that is endemic to north-eastern Australia. It has smooth white to pink bark, narrow lance-shaped to curved adult leaves, flower buds in groups of three, white flowers and urn-shaped or barrel-shaped fruit. Description ''Corymbia citriodora'' is a tree that typically grows to a height of , sometimes to and forms a lignotuber. It has smooth, pale, uniform or slightly mottled, white to pink or coppery bark that is shed in thin flakes. Young plants and coppice regrowth have egg-shaped to lance-shaped leaves that are long and wide. Adult leaves are the same shade of glossy green on both sides, often lemon-scented when crushed, narrow lance-shaped to curved, long and wide tapering to a petiole long. The flower buds are borne in leaf axils on a branched peduncle long, each branch with three buds on pedicels long. Mature buds are oval to pear-shaped, long and wide w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalyptus Camaldulensis
''Eucalyptus camaldulensis'', commonly known as the river red gum, is a tree that is endemic to Australia. It has smooth white or cream-coloured bark, lance-shaped or curved adult leaves, flower buds in groups of seven or nine, white flowers and hemispherical fruit with the valves extending beyond the rim. A familiar and iconic tree, it is seen along many watercourses across inland Australia, providing shade in the extreme temperatures of central Australia. Description ''Eucalyptus camaldulensis'' is a tree that typically grows to a height of but sometimes to and often does not develop a lignotuber. The bark is smooth white or cream-coloured with patches of yellow, pink or brown. There are often loose, rough slabs of bark near the base. The juvenile leaves are lance-shaped, long and wide. Adult leaves are lance-shaped to curved, the same dull green or greyish green colour on both sides, long and wide on a petiole long. The flower buds are arranged in groups of seve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalyptus Botryoides
''Eucalyptus botryoides'', commonly known as the bangalay, bastard jarrah, woollybutt or southern mahogany, is a small to tall tree native to southeastern Australia. Reaching up to high, it has rough bark on its trunk and branches. It is found on sandstone- or shale-based soils in open woodland, or on more sandy soils behind sand dunes. The white flowers appear in summer and autumn. It reproduces by resprouting from its woody lignotuber or epicormic buds after bushfire. ''E. botryoides'' hybridises with the Sydney blue gum ('' E. saligna'') in the Sydney region. The hard, durable wood has been used for panelling and flooring. Description In favourable conditions, ''Eucalyptus botryoides'' can grow as a straight-trunked tree to high with a dbh of , although it is often shorter in poorer situations. In exposed areas behind sand dunes, it is a lower spreading tree tall, with its leaves forming a dense crown, or even a multitrunked mallee form in poor sandy soils. It has a swol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eucalyptus Bosistoana
''Eucalyptus bosistoana'', commonly known as the coast grey box or Bosisto's box, is a tree that is endemic to south-eastern Australia. It has rough, flaky bark at the base of its trunk, smooth cream yellow or grey bark above and sometimes throughout, the smooth bark shed in ribbons. The adult leaves are lance-shaped to curved and the flower buds are arranged in groups of seven. The flowers are white and the fruit is a cup-shaped, barrel-shaped or hemispherical capsule. Description ''Eucalyptus bosistoana'' is the largest of the "box" group of eucalypts, grows to a height of up to with a stem diameter of at least and forms a lignotuber. The bark on the lower part of the trunk is thin, greyish brown, rough and flaky. The bark on the upper part of the trunk and on the branches is smooth, white, cream-coloured or grey and is shed in ribbons. Sometimes all the bark is smooth. Young plants and coppice regrowth have rounded stems and oblong to elliptic or egg-shaped, pale gre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
