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Melaleuca Howeana
''Melaleuca howeana'', commonly known as tea tree, is a plant in the myrtle Family (biology), family, Myrtaceae and is Endemism, endemic to the Lord Howe Island, Lord Howe Island group, off the east coast of Australia. It is common in exposed areas, on cliffs and ridges, occasionally forming pure stands. Its closest mainland relative is ''Melaleuca ericifolia''. Description ''Melaleuca howeana'' is a dense shrub growing to tall with flaky bark. Its young branchlets have fine, soft, silky hairs but become Glabrousness, glabrous with age. Its leaves are arranged alternately, sometimes in whorl (botany), whorls of three, each leaf long, wide, linear to narrow elliptic in shape with a blunt tip. The flowers are white, arranged in spikes at the ends of branches which continue to grow after flowering. Each spike is up to wide and contains between 6 and 18 individual flowers. The petals are long and fall off as the flower ages. The stamens are arranged in five bundles around the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edwin Cheel
Edwin Cheel (14 February 1872 – 19 September 1951) was an Australian botanist and collector. Before being appointed as a staff member of Centennial Park in 1897 he was a gardener in New South Wales and Queensland. Later he transferred to the Royal Botanic Gardens, Sydney. In 1908 he joined the National Herbarium, and was appointed Chief Botanist and Curator from 1933 to 1936. He described plants in the Myrtaceae, Myrtle family such as ''Melaleuca howeana''. Apart from the myrtles, his other main botanic interest were the lichens.:fr:Edwin Cheel He traveled extensively in collection of botanical specimens, which are lodged in New South Wales. He has a street named after him in the suburb of Farrer, Australian Capital Territory, Farrer, in the Australian Capital Territory. References External links Anbg.gov: Edwin Cheel biography IPNI.org: Edwin Cheel {{DEFAULTSORT:Cheel, Edwin 20th-century Australian botanists Botanists with author abbreviations 1872 births 1951 de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stamen
The stamen (: stamina or stamens) is a part consisting of the male reproductive organs of a flower. Collectively, the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filament and an anther which contains sporangium, microsporangia. Most commonly, anthers are two-lobed (each lobe is termed a locule) and are attached to the filament either at the base or in the middle area of the anther. The sterile (i.e. nonreproductive) tissue between the lobes is called the Connective (botany), connective, an extension of the filament containing conducting strands. It can be seen as an extension on the dorsal side of the anther. A pollen grain develops from a microspore in the microsporangium and contains the male gametophyte. The size of anthers differs greatly, from a tiny fraction of a millimeter in ''Wolfia'' spp up to five inches (13 centimeters) in ''Canna iridiflora'' and ''Strelitzia nicolai''. The stamens in a flower ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melaleuca
''Melaleuca'' () is a genus of nearly 300 species of plants in the myrtle family, Myrtaceae, commonly known as paperbarks, honey-myrtles, bottlebrushes or tea-trees (although the last name is also applied to species of '' Leptospermum''). They range in size from small shrubs that rarely grow to more than high, to trees up to . Their flowers generally occur in groups, forming a "head" or "spike" resembling a brush used for cleaning bottles, containing up to 80 individual flowers. Melaleucas are an important food source for nectarivorous insects, birds, and mammals. Many are popular garden plants, either for their attractive flowers or as dense screens and a few have economic value for producing fencing and oils such as "tea tree" oil. Most melaleucas are endemic to Australia, with a few also occurring in Malesia. Seven are endemic to New Caledonia, and one is found only on Australia's Lord Howe Island. Melaleucas are found in a wide variety of habitats. Many are adapted ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Flora Of Lord Howe Island
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are Indigenous (ecology), indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dryococelus Australis
''Dryococelus australis'', also known as the Lord Howe Island stick insect, Lord Howe Island phasmid or, locally, as the tree lobster, is a species of stick insect that lives in the Lord Howe Island Group. It is the only member of the monotypic genus ''Dryococelus''. Thought to be extinct by 1920, it was rediscovered in 2001. Although it had been extirpated from Lord Howe itself, a remnant population of 24 individuals was rediscovered on the sea stack of Ball's Pyramid, and the species has been called "the rarest insect in the world". Anatomy and behaviour Adult Lord Howe Island stick insects can measure up to in length and weigh , with males 25% smaller than females. They are oblong in shape and have sturdy legs. Males have thicker thighs than females. Unlike most phasmida, the insects have no wings. The behaviour of this stick insect is highly unusual for an insect species, in that the males and females form a bond in some pairs. The females lay eggs while hanging fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cliffed Coast
A cliffed coast, also called an abrasion coast, is a form of coast where the action of marine waves has formed steep cliffs that may or may not be precipitous. It contrasts with a Flat coast, flat or alluvial coast. Formation In coastal areas in which the land surface dips at a relatively steep angle below the water table, the continuous action of marine waves on the coastline, known as Abrasion (geology), abrasion, may create a steep declivity known as a cliff, the slope angle of which depends on a variety of factors including the jointing, bedding and hardness of the materials making up the cliff as well as the erosional processes themselves.Herbert Louis and Klaus Fischer: ''Allgemeine Geomorphologie'', de Gruyter, 4th ed., Berlin 1979, pp. 532-537 The slope is constantly being eroded. The waves attacking the cliff-foot form a wave-cut notch by constant abrasion action producing an overhang. This overhang grows in size as the cliff is undercut, until it collapses und ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ball's Pyramid
Ball's Pyramid is an uninhabited islet in the Pacific Ocean located southeast of Lord Howe Island, between Australia and New Zealand. The steep rocky basalt outcrop is the eroded plug of a shield volcano and caldera that formed 6.4million years ago. It is high, while measuring in length and only across, making it the tallest volcanic stack in the world. Ball's Pyramid, which is part of Australia's Lord Howe Island Marine Park, is positioned in the centre of a submarine shelf surrounded by rough seas, which makes any approach difficult. History Discovery The pyramid is named after Royal Navy Lieutenant Henry Lidgbird Ball, who reported discovering it in 1788. On the same voyage, Ball also discovered Lord Howe Island, Ball's Pyramid's nearest landmass. In ''The Voyage of Governor Phillip to Botany Bay with an Account of the Establishment of the Colonies of Port Jackson and Norfolk Island'' (1789), Arthur Phillip gives this description of the area around Ball's Pyr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Binomial Nomenclature
In taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, although they can be based on words from other languages. Such a name is called a binomial name (often shortened to just "binomial"), a binomen, name, or a scientific name; more informally, it is also called a Latin name. In the International Code of Zoological Nomenclature (ICZN), the system is also called nomenclature, with an "n" before the "al" in "binominal", which is a typographic error, meaning "two-name naming system". The first part of the name – the '' generic name'' – identifies the genus to which the species belongs, whereas the second part – the specific name or specific epithet – distinguishes the species within the genus. For example, modern humans belong to the genus ''Homo'' and within this genus to the species ''Hom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Society Of New South Wales
The Royal Society of New South Wales is a learned society based in Sydney, Australia. The Governor of New South Wales is the vice-regal patron of the Society. It is the oldest learned society in the Southern Hemisphere. The Society traces its origin to the Philosophical Society of Australasia established on 27 June 1821. In 1850, after a period of informal activity, the Society was revived as the Australian Philosophical Society and, in 1856, the Philosophical Society of New South Wales. The Society was granted Royal Assent on 12 December 1866 and at that time was renamed the Royal Society of New South Wales. Membership is open to any person interested in the promotion of studies in Science, Art, Literature and Philosophy. Fellowship and Distinguished Fellowship are by election, and may be conferred on leaders in their fields. Fellowship and Distinguished Fellowship are honours gazetted under vice-regal authority by the Governor of New South Wales, and marked by the post-nomina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Capsule (botany)
In botany, a capsule is a type of simple, dry, though rarely fleshy dehiscent fruit produced by many species of angiosperms ( flowering plants). Origins and structure The capsule (Latin: ''capsula'', small box) is derived from a compound (multicarpellary) ovary. A capsule is a structure composed of two or more carpels. In (flowering plants), the term locule (or cell) is used to refer to a chamber within the fruit. Depending on the number of locules in the ovary, fruit can be classified as uni-locular (unilocular), bi-locular, tri-locular or multi-locular. The number of locules present in a gynoecium may be equal to or less than the number of carpels. The locules contain the ovules or seeds and are separated by septa. Dehiscence In most cases the capsule is dehiscent, i.e. at maturity, it splits apart (dehisces) to release the seeds within. A few capsules are indehiscent, for example those of '' Adansonia digitata'', '' Alphitonia'', and '' Merciera''. Capsules are often ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petal
Petals are modified leaves that form an inner whorl surrounding the reproductive parts of flowers. They are often brightly coloured or unusually shaped to attract pollinators. All of the petals of a flower are collectively known as the ''corolla''. Petals are usually surrounded by an outer whorl of modified leaves called sepals, that collectively form the ''calyx'' and lie just beneath the corolla. The calyx and the corolla together make up the perianth, the non-reproductive portion of a flower. When the petals and sepals of a flower are difficult to distinguish, they are collectively called tepals. Examples of plants in which the term ''tepal'' is appropriate include genera such as '' Aloe'' and '' Tulipa''. Conversely, genera such as '' Rosa'' and '' Phaseolus'' have well-distinguished sepals and petals. When the undifferentiated tepals resemble petals, they are referred to as "petaloid", as in petaloid monocots, orders of monocots with brightly coloured tepals. Since they ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lord Howe Island
Lord Howe Island (; formerly Lord Howe's Island) is an irregularly crescent-shaped volcanic remnant in the Tasman Sea between Australia and New Zealand, part of the Australian state of New South Wales. It lies directly east of mainland Port Macquarie, northeast of Sydney, and about southwest of Norfolk Island. It is about long and between wide with an area of , though just of that comprise the low-lying developed part of the island. The island is named after Richard Howe, 1st Earl Howe. Along the west coast is a sandy semi-enclosed sheltered coral reef lagoon. Most of the population lives in the north, while the south is dominated by forested hills rising to the highest point on the island, Mount Gower (). The Lord Howe Island Group comprises 28 islands, islets, and rocks. Apart from Lord Howe Island itself, the most notable of these is the volcanic and uninhabited Ball's Pyramid about to the southeast of Howe. To the north lies the Admiralty Group, a cluster of seven ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
