|
Colubrina Pedunculata
''Colubrina pedunculata'' is a shrub in the family Rhamnaceae. It is endemism, endemic to Christmas Island, an Australian territory in the north-eastern Indian Ocean. Its specific name (botany), specific epithet comes from the Latin ''pedunculatus'', referring to the long and conspicuous Peduncle (botany), peduncle of the inflorescence.Flora of Australia Online. Description ''Colubrina pedunculata'' is a thorny, sometimes straggling, shrub or small tree. Its thorns are 5–20 mm long. Its leaf, leaves are alternate, narrowly elliptic, and deciduous after fruiting. It bears many yellow-green flowers, 5–6 mm across and clustered. The fruit is about 7 mm long. Distribution and habitat Found only on Christmas Island, the plant is common on the northern and north-eastern marine terrace, terraces, in areas of poor, dry soil, among limestone pinnacles and scree, and in cliff edge thickets. Relationships Since it is closely related to the widespread ''Colubrina asi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edmund Gilbert Baker
Edmund Gilbert Baker (1864–1949) was a British plant collector and botanist. He was the son of John Gilbert Baker. Works * ''Synopsis of Malveae'', 1895 * ''The plants of Milanji, Nyassa-land''. Con James Britten. 1894 * ''Catalogue of the Plants collected by Mr. & Mrs. P.A. Talbot in the Oban district, South Nigeria. London'' (impreso por orden de Trustees, British Museum (Natural History) * ''Leguminosae of Tropical Africa'', part 1, [1]-215, in 1926; part 2, [i-iii], 216-607, Jul 1929; part 3, [i-iii], 608-693, from 1930. Among species he named are ''Banksia burdettii'' and ''Banksia ashbyi''. References {{DEFAULTSORT:Baker, Edmund Gilbert 1864 births 1949 deaths English botanists Fellows of the Linnean Society of London ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Terrace
A raised beach, coastal terrace,Pinter, N (2010): 'Coastal Terraces, Sealevel, and Active Tectonics' (educational exercise), from 2/04/2011/ref> or perched coastline is a relatively flat, horizontal or gently inclined surface of marine origin,Pirazzoli, PA (2005a): 'Marine Terraces', in Schwartz, ML (ed) ''Encyclopedia of Coastal Science.'' Springer, Dordrecht, pp. 632–633 mostly an old abrasion platform which has been lifted out of the sphere of wave activity (sometimes called "tread"). Thus, it lies above or under the current sea level, depending on the time of its formation.Strahler AH; Strahler AN (2005): ''Physische Geographie.'' Ulmer, Stuttgart, 686 p.Leser, H (ed)(2005): ‚''Wörterbuch Allgemeine Geographie.'' Westermann&Deutscher Taschenbuch Verlag, Braunschweig, 1119 p. It is bounded by a steeper ascending slope on the landward side and a steeper descending slope on the seaward side (sometimes called "riser"). Due to its generally flat shape, it is often used for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Flora Of Christmas Island
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are 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 be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colubrina
''Colubrina'' is a genus of about 30 species of flowering plants in the family Rhamnaceae, native to warm temperate to tropical regions of Africa, the Americas, southern Asia, northern Australia, and the Indian Ocean islands. Common names include nakedwood, snakewood, greenheart and hogplum. The generic name is derived from the Latin word ''coluber'', meaning "snake", and refers to the snake-like stems or stamens. The species are shrubs and small trees growing tall, with simple ovate leaves. The flowers are small, greenish-white or yellowish; the fruit is a capsule containing three seeds. The genus is at least in part a wastebasket taxon, and revision will likely result in the renaming of a number of species to different genera. ''Colubrina asiatica'', native to tropical Asia, eastern Africa and northern Australia, has become an invasive species in Florida. Selected species *''Colubrina angustior'' ( M.C.Johnst.) G.L.Nesom (eastern Mexico) *'' Colubrina arborescens'' ( Mil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Biological Resources Study
Australian Biological Resources Study (ABRS) is a project undertaken by Parks Australia Division of Australia's Department of the Environment, Water, Heritage and the Arts (DEWHA). Background ABRS was founded in 1973 from the recommendations of a 1972 Senate Select Committee report on Wildlife Conservation. Its purpose is to collate from the many libraries, museums and other collections the taxonomy of Australia's estimated 2 million species of flora and fauna, including aquatic species. These represent almost 20% of the earth's biodiversity, 80% of which are unique to Australia. ABRS has undertaken active funding for taxonomic research of Australia's biodiversity and is internationally recognised for its extensive data bases and publications. Publications The most important outputs of the ABRS has been the publication of the multi-volume ''Flora of Australia'' and '' Fauna of Australia'' series. Other output includes ''The Banksia Atlas'' and the "Platypus" database pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pharmacology
Pharmacology is a branch of medicine, biology and pharmaceutical sciences concerned with drug or medication action, where a drug may be defined as any artificial, natural, or endogenous (from within the body) molecule which exerts a biochemical or physiological effect on the cell, tissue, organ, or organism (sometimes the word ''pharmacon'' is used as a term to encompass these endogenous and exogenous bioactive species). More specifically, it is the study of the interactions that occur between a living organism and chemicals that affect normal or abnormal biochemical function. If substances have medicinal properties, they are considered pharmaceuticals. The field encompasses drug composition and properties,functions,sources,synthesis and drug design, molecular and cellular mechanisms, organ/systems mechanisms, signal transduction/cellular communication, molecular diagnostics, interactions, chemical biology, therapy, and medical applications and antipathogenic capabilities. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Toxins
Fish toxins or fish stupefying plants have historically been used by many hunter gatherer cultures to stun fish, so they become easy to collect by hand. Some of these toxins paralyse fish, which can then be easily collected. The process of documenting many fish toxins and their use is ongoing, with interest in potential uses from medicine, agriculture, and industry. Theory Use of the herbal fish poisons has been documented in a number of sources involving catching fish from fresh and sea water. Tribal people historically used various plants for medicinal and food exploitation purposes. Use of fish poisons is a very old practice in the history of humankind. In 1212 AD, King Frederick II prohibited the use of certain plant piscicides, and by the 15th century, similar laws had been decreed in other European countries, as well. All over the globe, indigenous people use various fish poisons to kill fish, including America and among Tarahumara Indians. Herbal fish-stupefying agents ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colubrina Asiatica
''Colubrina asiatica'' is a shrub in the family Rhamnaceae that is native to tropical and subtropical regions of the Old World, from eastern Africa to India, southeast Asia, tropical Australia, and the Pacific Islands. Common names include latherleaf, Asian nakedwood and Asian snakewood. Description ''Colubrina asiatica'' has a vine-like growth habit, sending out multiple stems that can reach in length. The branches have simple, alternate, glossy, ovate and acuminate leaves, long, with several prominent veins. Leaf margins are wavy or finely serrated (toothed). Flowers are small, greenish and bloom in clusters in leaf axils. Blooming can occur year-round. Fruit are berry-like capsules with small, gray seeds. Seeds float and are tolerant to salt water, which allows the species to spread across oceans. The plants grow in full to partial sun on upland sites. As an invasive species In Florida in the United States, ''Colubrina asiatica'' is an invasive species, capable of di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scree
Scree is a collection of broken rock fragments at the base of a cliff or other steep rocky mass that has accumulated through periodic rockfall. Landforms associated with these materials are often called talus deposits. Talus deposits typically have a concave upwards form, where the maximum inclination corresponds to the angle of repose of the mean debris particle size. The exact definition of scree in the primary literature is somewhat relaxed, and it often overlaps with both ''talus'' and ''colluvium''. The term ''scree'' comes from the Old Norse term for landslide, ''skriða'', while the term ''talus'' is a French word meaning a slope or embankment. In high-altitude arctic and subarctic regions, scree slopes and talus deposits are typically adjacent to hills and river valleys. These steep slopes usually originate from late-Pleistocene periglacial processes. Notable scree sites in Eastern North America include the Ice Caves at White Rocks National Recreation Area in southern Ve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limestone
Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly dolomite, a closely related rock, which contains a high percentage of the mineral dolomite, . ''Magnesian limestone'' is an obsolete and poorly-defined term used variously for dolomite, for limes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deciduous
In the fields of horticulture and Botany, the term ''deciduous'' () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petals, after flowering; and to the shedding of ripe fruit. The antonym of ''deciduous'' in the botanical sense is evergreen. Generally, the term "deciduous" means "the dropping of a part that is no longer needed or useful" and the "falling away after its purpose is finished". In plants, it is the result of natural processes. "Deciduous" has a similar meaning when referring to animal parts, such as deciduous antlers in deer, deciduous teeth (baby teeth) in some mammals (including humans); or decidua, the uterine lining that sheds off after birth. Botany In botany and horticulture, deciduous plants, including trees, shrubs and herbaceous perennials, are those that lose all of their leaves for part of the year. This process is called abscissio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhamnaceae
The Rhamnaceae are a large family of flowering plants, mostly trees, shrubs, and some vines, commonly called the buckthorn family. Rhamnaceae is included in the order Rosales. The family contains about 55 genera and 950 species. The Rhamnaceae have a worldwide distribution, but are more common in the subtropical and tropical regions. The earliest fossil evidence of Rhamnaceae is from the Late Cretaceous. Fossil flowers have been collected from the Upper Cretaceous of Mexico and the Paleocene of Argentina. Leaves of family Rhamnaceae members are simple, i.e., the leaf blades are not divided into smaller leaflets.Flowering Plants of the Santa Monica Mountains, Nancy Dale, 2nd Ed. 2000, p. 166 Leaves can be either alternate or opposite. Stipules are present. These leaves are modified into spines in many genera, in some (e.g. ''Paliurus spina-christi'' and '' Colletia cruciata'') spectacularly so. ''Colletia'' stands out by having two axillary buds instead of one, one developing int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Endemic Flora Of Christmas Island")
