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Hakea Pulvinifera
''Hakea pulvinifera'', also known as Lake Keepit Hakea, is a small, prickly shrub in the family Proteaceae, found only on one rocky hillside at Lake Keepit near Gunnedah in New South Wales, Australia. The species was first described in 1962, believed extinct in 1971 and rediscovered in 1988. The entire species may be of only one genetically unique individual. It is one of only two ''Hakea'' species that reproduce solely through basal shoots or 'suckering', reducing genetic variation. Description ''Hakea pulvinifera'' is a shrub which grows to about high and has thick, tessellated bark. The leaves are long, divided into two to nine segments each long and wide, each ending in a sharp point. The flowers are arranged in groups of forty to fifty creamy-white and green flowers in leaf axils. Flowering occurs from September to November but the pollen grains are shrivelled and empty. Fruit have never been seen on plants of this species. This species only reproduces naturally through ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian National Botanic Gardens
The Australian National Botanic Gardens (ANBG) is a heritage-listed botanical garden located in , Canberra, in the Australian Capital Territory, Australia. Established in 1949, the Gardens is administered by the Australian Government's Department of Agriculture, Water and the Environment. The botanic gardens was added to the Commonwealth Heritage List on 22 June 2004. The botanic gardens is the largest living collection of native Australian flora. The mission of the ANBG is to "study and promote Australia's flora". The gardens maintains a wide variety of botanical resources for researchers and cultivates native plants threatened in the wild. The herbarium code for the Australian National Botanic Gardens is ''CANB''. History When Canberra was being planned in the 1930s, the establishment of the gardens was recommended in a report in 1933 by the Advisory Council of Federal Capital Territory. In 1935, The Dickson Report set forth a framework for their development. A large site fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Callitris Columellaris
''Callitris columellaris'' is a species of coniferous tree in the family Cupressaceae (cypress family), native to most of Australia. Common names include white cypress, white cypress-pine, Murray River cypress-pine, and northern cypress-pine. ''Callitris columellaris'' has become naturalised in Hawaii and in southern Florida. Description It is a small evergreen tree, 4–12 m (rarely to 20 m) high, with a trunk up to 50 cm diameter. The leaves are scale-like, 2–6 mm long and 0.5 mm broad, arranged in decussate whorls of three on very slender shoots 0.7–1 mm diameter. The cones are globose, 1–2 cm diameter, with six triangular scales, which open at maturity to release the seeds. Taxonomy Some authors (e.g. Thompson & Johnson 1986, followed by the ''Flora of Australia Online'') divide it into three species (or occasionally as varieties), based largely on the foliage colour, with green plants predominating on the east coast of Australia, and glaucous p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stochastic Process
In probability theory and related fields, a stochastic () or random process is a mathematical object usually defined as a family of random variables. Stochastic processes are widely used as mathematical models of systems and phenomena that appear to vary in a random manner. Examples include the growth of a bacterial population, an electrical current fluctuating due to thermal noise, or the movement of a gas molecule. Stochastic processes have applications in many disciplines such as biology, chemistry, ecology, neuroscience, physics, image processing, signal processing, control theory, information theory, computer science, cryptography and telecommunications. Furthermore, seemingly random changes in financial markets have motivated the extensive use of stochastic processes in finance. Applications and the study of phenomena have in turn inspired the proposal of new stochastic processes. Examples of such stochastic processes include the Wiener process or Brownian motion process, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN Red List
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biological species. It uses a set of precise criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of Regional Red Lists are produced by countries or organizations, which assess the risk of extinction to species within a political management unit. The aim of the IUCN Red List is to convey the urgency of conservation issues to the public and policy makers, as well as help the international community to reduce species extinction. According to IUCN the formally stated goals of the Red List are to provi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NSW Threatened Species Conservation Act 1995 (TSC Act)
The ''Threatened Species Conservation Act 1995 (TSC Act)'' was enacted by the Parliament of New South Wales in 1995 to protect threatened species, populations and ecological communities in NSW. In 2016 it was replaced by the '' Biodiversity Conservation Act 2016''. These acts form the basis and the mechanisms in NSW by which species, populations and ecological communities are declared endangered, vulnerable or critically endangered, and under which people and corporations are prosecuted for destruction of habitat sheltering such species, populations or communities. Species, populations, and ecological communities are declared endangered on advice from the NSW scientific committee (established by the Act), which consists of 11 members appointed by the minister and whose purpose is to determine which species are to be listed as threatened species, which populations as endangered populations, and which ecological communities as endangered, critically endangered or vulnerable ecol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Environment Protection And Biodiversity Conservation Act 1999
The ''Environment Protection and Biodiversity Conservation Act 1999'' (Cth) is an Act of the Parliament of Australia that provides a framework for protection of the Australian environment, including its biodiversity and its natural and culturally significant places. Enacted on 17 July 2000, it established a range of processes to help protect and promote the recovery of threatened species and ecological communities, and preserve significant places from decline. The Act is administered by the Department of Agriculture, Water and the Environment. Lists of threatened species are drawn up under the Act, and these lists, the primary reference to threatened species in Australia, are available online through the Species Profile and Threats Database (SPRAT). As an Act of the Australian Parliament, it relies for its constitutional validity upon the legislative powers of the Parliament granted by the Australian Constitution, and key provisions of the Act are largely based on a number ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aristida
''Aristida'' is a very nearly cosmopolitan genus of plants in the grass family. ''Aristida'' is distinguished by having three awns (bristles) on each lemma of each floret. The genus includes about 300 species found worldwide, often in arid warm regions. This genus is among those colloquially called three-awns wiregrasses, speargrasses and needlegrasses. The name ''Aristida'' is derived from the Latin " arista", meaning "awn". They are characteristic of semiarid grassland. The Wiregrass Region of North America is named for '' A. stricta''. Other locales where this genus is an important component of the ecosystem include the Carolina Bays, the sandhills of the Carolinas, and elsewhere, Mulga scrub in Australia, and the xeric grasslands around Lake Turkana in Africa. Local increases in the abundance of wiregrasses is a good indicator of overgrazing, as livestock avoid them. Description ''Aristida'' stems are ascending to erect, with both basal and cauline leaves. The leave ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heteropogon Contortus
''Heteropogon contortus'' is a tropical, perennial tussock grass with a native distribution encompassing Southern Africa, southern Asia, Northern Australia, Oceania, and southwestern North America. The species has also become a naturalised weed in tropical and subtropical regions in the Americas and East Asia. The plant grows to in height and is favoured in most environments by frequent burning. The plants develop characteristic dark seeds with a single long awn at one end and a sharp spike at the other. The awn becomes twisted when dry and straightens when moistened, and in combination with the spike is capable of drilling the seed into the soil. The species is known by many common names, including black speargrass, tanglehead, ''steekgras'' (in Afrikaans) and ''pili'' (in Hawaiian, ultimately from Proto-Austronesian *''pilit''₁ "to adhere/stick"). ''H. contortus'' is a valuable pasture species across much of its range. However, it has also been responsible for the eliminati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cymbopogon Obtectus
''Cymbopogon obtectus'' is a species of perennial grass in the genus ''Cymbopogon''. The grass is native to Australia and was described by Stanley Thatcher Blake Stanley Thatcher Blake (1910 – 24 February 1973) was an Australian botanist who served as president of the Royal Society of Queensland and who was associated with the Queensland Herbarium beginning in 1945 until his death. Background Prior to ... in 1944. It is found in drier areas. The plant can be harvested in the wild to produce essential oil with medicinal properties. The plant is resilient to climate change, and has been used in re-vegetation projects. References obtectus {{Panicoideae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Themeda Triandra
} ''Themeda triandra'' is a species of perennial tussock-forming grass widespread in Africa, Australia, Asia and the Pacific. In Australia it is commonly known as kangaroo grass and in East Africa and South Africa it is known as red grass and red oat grass or as ''rooigras'' in Afrikaans. Kangaroo grass was formerly thought to be one of two species, and was named ''Themeda australis''. The plant has traditional uses as food and medicine in Africa and Australia. Indigenous Australians harvested it to make bread and string for fishing nets around 30,000 years ago. It was used as livestock feed in early colonial Australia, but this use was largely replaced by introduced plants. there is a large government-funded project under way to investigate the possibility of growing kangaroo grass commercially in Australia for use as a regular food source for humans. Description ''Themeda triandra'' is a grass which grows in dense tufts up to tall and wide. It flowers in summer, produci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Verbascum Virgatum
''Verbascum virgatum'', commonly known as twiggy mullein and wand mullein, is a plant species in the family Scrophulariaceae. Description It is a tall-growing biennial herb reaching a height of between 1 and 2 metres. The flowers are 3 to 4 cm in diameter and are yellow with a purple centre. Distribution The species is native to Great Britain, Italy, France, the Iberian Peninsula, the Canary Islands and the Madeira Islands. Additionally, it is naturalised in South Africa, North America, South America, Australia, New Zealand, Melanesia, Polynesia and the Azores ) , motto =( en, "Rather die free than subjected in peace") , anthem= ( en, "Anthem of the Azores") , image_map=Locator_map_of_Azores_in_EU.svg , map_alt=Location of the Azores within the European Union , map_caption=Location of the Azores wi .... References External links Jepson Manual TreatmentPhoto gallery virgatum Flora of Europe Flora of Italy Flora of Spain Flora of the Canary Islands Flora of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
