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Kunzea Rupestris
''Kunzea rupestris'', the rocky kunzea, is a rare Australian plant in the myrtle family. There are some 20 known populations, all just north of Sydney, including Ku-ring-gai Chase National Park and Marramarra National Park. Threats to this species include track maintenance, invasive weeds, removal of rocks and sand, fire management and the cut flower industry. Description ''Kunzea rupestris'' grows as a spreading clonal shrub, 0.5 to 2 metres tall. Foliage is dense with leaves 6 to 11 mm long,1.5 to 3 mm wide. The reverse lanceolate shaped leaves have a triangular shaped tip. New growth is noticeably villous. Mature leaves may be without hairs. White to cream flowers form in stalkless clusters in spring at the edge of branchlets. The sepals have a triangular shape, 1 to 1.5 mm long. Petals are 1 to 1.5 mm long. The hypanthium of the flower is also densely covered in small shaggy hairs. Distribution and habitat ''Kunzea rupestris'' usually grows o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Campylopus Bicolor
''Campylopus bicolor'' is a species of moss found in Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ... and New Zealand. References {{Bryophyte-stub Dicranales Plants described in 1854 Flora of Australia Flora of New Zealand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lower Portland
Lower Portland is a rural suburb near Sydney, in the state of New South Wales, Australia. Lower Portland is located 80 kilometres northwest of the Sydney central business district The Sydney central business district (CBD) is the historical and main Central business district, commercial centre of Sydney. The CBD is Sydney's city centre, or Sydney City, and the two terms are used interchangeably. Colloquially, the CBD or c ..., in the local government areas of The Hills Shire (east of the Hawkesbury River and the City of Hawkesbury (west of the Hawkesbury River). Lower Portland is a peaceful hamlet located at the junction of the Colo and Hawkesbury rivers. The area has historical significance, is scenic and is popular for water skiing. History The original inhabitants of the Lower Portland area were the Dharug people. The Darug were the custodians of the majority of what is now the Greater Sydney region. They were divided into a number of different 'clans', whose qui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linnean Society Of New South Wales
The Linnean Society of New South Wales promotes ''the Cultivation and Study of the Science of Natural History in all its Branches'' and was founded in Sydney, New South Wales (Australia) in 1874 and incorporated in 1884. History The Society succeeded the ''Entomological Society of New South Wales'', founded in 1862 which folded in 1872, with James Charles Cox as its first president. The first issue of ''Proceedings'' was in 1875. The establishment of the Society was largely due to the dedication and financial support of its first President, Sir William Macleay. Joseph James Fletcher was director and librarian (this title was afterwards changed to secretary) from 1885 and edited 33 volumes of the ''Proceedings'' of the society. In September 1882, a fire destroyed the library and a part of the scientific material of the society. The efforts of William Macleay made it possible nevertheless for the society to continue its activities. Macleay bursary In 1903, the Society created ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canoelands, New South Wales
Canoelands is a suburb of northern Sydney, in the state of New South Wales, Australia. Canoelands is 60 kilometres north of the Sydney central business district, in the local government area of Hornsby Shire and The Hills Shire. Geography Canoelands is a small hamlet near Glenorie, consisting of some 80 houses and 247 people extending out towards the east from Old Northern Road. Canoelands is between the hamlets of Forest Glen and Maroota and is 10 km north of the village of Glenorie and 20 km south of the village of Wisemans Ferry. By road, Canoelands is 55 km north of the Sydney Harbour Bridge. The landform of the area is on Canoelands Ridge, a high, undulating, dissected plateau of Hawkesbury Sandstone with many steep gullies covered with dry sclerophyll forest, predominantly tall varieties of hardwood trees of the genus Eucalyptus. It has an area of 60 km2 and is surrounded on three sides by the Marramarra National Park, a wilderness area of 11,759 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kunzea Capitata
''Kunzea capitata'' is a shrub species in the family Myrtaceae. It is native to New South Wales in Australia. Description The species has a spreading or erect habit and may grow up to in height, but is usually within the range of . Flowers are pink to purple, or occasionally white. These are produced on the branch ends in "heads". Leaves are long and wide, with recurved tips and long petioles. Taxonomy The species was first formally described by English botanist James Smith in 1797 in '' Transactions of the Linnean Society of London'', and given the name ''Metrosideos capitata''. The species epithet ''capitata'' is derived from the Latin word ''caput'' (head), alluding to the arrangement of the flowers. It was transferred to the genus '' Kunzea'' in 1846 by German botanist Gustav Heynhold. Distribution and habitat The species occurs in heathland and dry sclerophyll forest from the Ulladulla district northward to Richmond River. Cultivation The species prefers a moi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hybrid (biology)
In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different breeds, varieties, species or genera through sexual reproduction. Hybrids are not always intermediates between their parents (such as in blending inheritance), but can show hybrid vigor, sometimes growing larger or taller than either parent. The concept of a hybrid is interpreted differently in animal and plant breeding, where there is interest in the individual parentage. In genetics, attention is focused on the numbers of chromosomes. In taxonomy, a key question is how closely related the parent species are. Species are reproductively isolated by strong barriers to hybridisation, which include genetic and morphological differences, differing times of fertility, mating behaviors and cues, and physiological rejection of sperm cells or the developing embryo. Some act before fertilization and others after it. Similar barriers exist in plants, with differences in flowering tim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bushfires In Australia
Bushfires in Australia are a widespread and regular occurrence that have contributed significantly to shaping the nature of the continent over millions of years. Eastern Australia is one of the most fire-prone regions of the world, and its predominant eucalyptus forests have evolved to thrive on the phenomenon of bushfire. However, the fires can cause significant property damage and loss of both human and animal life. Bushfires have killed approximately 800 people in Australia since 1851, and billions of animals. The most destructive fires are usually preceded by extreme high temperatures, low relative humidity and strong winds, which combine to create ideal conditions for the rapid spread of fire. Severe fire storms are often named according to the day on which they peaked, including the five most deadly blazes: Black Saturday 2009 in Victoria (173 people killed, 2,000 homes lost); Ash Wednesday 1983 in Victoria and South Australia (75 dead, nearly 1,900 homes); Black Frida ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stigma (botany)
The stigma () is the receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower. Description The stigma, together with the style and ovary (typically called the stigma-style-ovary system) comprises the pistil, which is part of the gynoecium or female reproductive organ of a plant. The stigma itself forms the distal portion of the style, or stylodia, and is composed of , the cells of which are receptive to pollen. These may be restricted to the apex of the style or, especially in wind pollinated species, cover a wide surface. The stigma receives pollen and it is on the stigma that the pollen grain germinates. Often sticky, the stigma is adapted in various ways to catch and trap pollen with various hairs, flaps, or sculpturings. The pollen may be captured from the air (wind-borne pollen, anemophily), from visiting insects or other animals ( biotic pollination), or in rare cases from surrounding water (hydrophily). Stigma can vary from long and sle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ovule
In seed plants, the ovule is the structure that gives rise to and contains the female reproductive cells. It consists of three parts: the ''integument'', forming its outer layer, the ''nucellus'' (or remnant of the megasporangium), and the female gametophyte (formed from a haploid megaspore) in its center. The female gametophyte — specifically termed a ''megagametophyte''— is also called the ''embryo sac'' in angiosperms. The megagametophyte produces an egg cell for the purpose of fertilization. The ovule is a small structure present in the ovary. It is attached to the placenta by a stalk called a funicle. The funicle provides nourishment to the ovule. Location within the plant In flowering plants, the ovule is located inside the portion of the flower called the gynoecium. The ovary of the gynoecium produces one or more ovules and ultimately becomes the fruit wall. Ovules are attached to the placenta in the ovary through a stalk-like structure known as a ''funiculus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seed Dormancy
Seed dormancy is an evolutionary adaptation that prevents seeds from germinating during unsuitable ecological conditions that would typically lead to a low probability of seedling survival. Dormant seeds do not germinate in a specified period of time under a combination of environmental factors that are normally conducive to the germination of non-dormant seeds. An important function of seed dormancy is delayed germination, which allows dispersal and prevents simultaneous germination of all seeds. The staggering of germination safeguards some seeds and seedlings from suffering damage or death from short periods of bad weather or from transient herbivores; it also allows some seeds to germinate when competition from other plants for light and water might be less intense. Another form of delayed seed germination is seed quiescence, which is different from true seed dormancy and occurs when a seed fails to germinate because the external environmental conditions are too dry or warm or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indehiscent
Dehiscence is the splitting of a mature plant structure along a built-in line of weakness to release its contents. This is common among fruits, anthers and sporangia. Sometimes this involves the complete detachment of a part; structures that open in this way are said to be dehiscent. Structures that do not open in this way are called indehiscent, and rely on other mechanisms such as decay or predation to release the contents. A similar process to dehiscence occurs in some flower buds (e.g., ''Platycodon'', ''Fuchsia''), but this is rarely referred to as dehiscence unless circumscissile dehiscence is involved; anthesis is the usual term for the opening of flowers. Dehiscence may or may not involve the loss of a structure through the process of abscission. The lost structures are said to be caducous. Association with crop breeding Manipulation of dehiscence can improve crop yield since a trait that causes seed dispersal is a disadvantage for farmers whose goal is to collect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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