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Cheirolophus Crassifolius
''Cheirolophus crassifolius'', the Maltese centaury, Maltese rock-centaury or Widnet il-Baħar, is a species of flowering plant in the family Asteraceae. It is Endemism, endemic to Malta, where it has been the national plant of Malta since 1973. Its natural habitats are cliffs and coastal valleys. It is threatened by habitat loss. It is scarce but widespread in the wild on the western cliffs of Malta, rare on the southern cliffs of Gozo, but frequent as a cultivated species in roundabouts. It is quite common in the limits of Wied Babu in the south east of Malta. It was first described by Stefano Zerafa, around 1830, as the only species of the monotypic genus ''Palaeocyanus''. However, around the year 2000, it was transferred to ''Cheirolophus'', in the light of genetic studies done in that year. The name ''Cheirolophus'' means hand-crest, referring to the hand-shaped bract tips of the most species in this genus, while ''crassifolius'' mean thick leaves. The leaves are succulent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antonio Bertoloni
Antonio Bertoloni (February 8, 1775 in Sarzana – April 17, 1869 in Bologna) was an Italian physician and botanist who made extensive studies of Italian plants. He also collected notable samples of Central American flora. Biography He studied medicine and botany at the University of Pavia, afterwards (1796) continuing his medical education in Genoa. For a period of time he practiced medicine in his home town of Sarzana. In 1811 he returned to Genoa, where he served as a professor of physics at the Imperial Lyceum. In 1815 he was appointed professor of botany at the University of Bologna. His son Giuseppe Bertoloni, Giuseppe (1804-1874) was a botanist and entomologist in Bologna. Tributes * ''Bertolonia'', botanical genus from the family Melastomataceae. * Plants with the specific epithet of ''bertolonii'', an example being ''Ophrys bertolonii'' (Bertoloni's bee orchid). Selected works His major work, "Flora Italica; sistens plantas in Italia et in insulis circumstantibus s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. ''Panthera leo'' (lion) and ''Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomy (biology), taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. Phylogeneti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Symbols Of Malta
The island nation of Malta has a variety of national flags and symbols, some current and some no longer in use. National flag and coat of arms The National Flag of Malta is defined in the Constitution and consists of two equal vertical stripes, white in the hoist and red in the fly, with a representation of the George Cross, edged with red, in the canton of the white stripe; the breadth of the flag is one and a half times its height. It was adopted when Malta became independent from the United Kingdom on 21 September 1964. The George Cross decoration was awarded by King George VI of the United Kingdom, George VI for collective gallantry in 1942. Malta remained the only collective awardee of the decoration until it was awarded to the Royal Ulster Constabulary of Northern Ireland in 1999. The current emblem of Malta is described by the Emblem and Public Seal of Malta Act (1988) as a shield showing an heraldry, heraldic representation of the National Flag; above the shield a mural cro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Flora Of Malta
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 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 larger area or becoming ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plants Described In 1829
Plants are the eukaryotes that form the kingdom Plantae; they are predominantly photosynthetic. This means that they obtain their energy from sunlight, using chloroplasts derived from endosymbiosis with cyanobacteria to produce sugars from carbon dioxide and water, using the green pigment chlorophyll. Exceptions are parasitic plants that have lost the genes for chlorophyll and photosynthesis, and obtain their energy from other plants or fungi. Most plants are multicellular, except for some green algae. Historically, as in Aristotle's biology, the plant kingdom encompassed all living things that were not animals, and included algae and fungi. Definitions have narrowed since then; current definitions exclude fungi and some of the algae. By the definition used in this article, plants form the clade Viridiplantae (green plants), which consists of the green algae and the embryophytes or land plants (hornworts, liverworts, mosses, lycophytes, ferns, conifers and other gymnosperm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cardueae
The Cardueae are a tribe (biology), tribe of flowering plants in the daisy family (Asteraceae) and the subfamily Carduoideae. Most of them are commonly known as thistles; four of the best known genera are ''Carduus'', ''Cynara'' (containing the widely eaten artichoke), ''Cirsium'', and ''Onopordum''. They are annual plant, annual, biennial plant, biennial, or perennial plant, perennial Herbaceous plant, herbs. Many species are thorn (botany), thorny on leaves, stems, or Involucral bract, involucre, and some have latex, laticifers or resin conduits. Almost 80 genera comprising 2500 species are assigned to this tribe, native of temperate regions of Europe and Asia (especially the Mediterranean region and Minor Asia), Australia and tropical Africa; only three genera contain species native to the Americas.Bremer 1994 ''Asteraceae'': Cladistic and Classification [Tribe ''Carduae'': 112-156] Taxonomy The correct name for the tribe has been disputed. In 1806, Jean-Baptiste Lamarck and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gozo
Gozo ( ), known in classical antiquity, antiquity as Gaulos, is an island in the Malta#The Maltese archipelago, Maltese archipelago in the Mediterranean Sea. The island is part of the Republic of Malta. After the Malta Island, island of Malta itself, it is the second-largest island in the archipelago. As of 2021, the island has a population of around 39,287 (out of Malta's total 443,227), and its inhabitants are known as Gozitans (). It is rich in historic locations such as the Ġgantija temples, which, along with the other Megalithic Temples of Malta, are amongst the world's oldest free-standing structures. The island is rural in character and less developed than the island of Malta. Gozo is known for its scenic hills, which are featured on its coat of arms. The Azure Window in Dwejra, San Lawrenz, a natural limestone arch, was a remarkable geological feature until its collapse on March 8, 2017. The island has other notable natural features, including the Inland Sea, Gozo, In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat Loss
Habitat destruction (also termed habitat loss or habitat reduction) occurs when a natural habitat is no longer able to support its native species. The organisms once living there have either moved elsewhere, or are dead, leading to a decrease in biodiversity and Abundance (ecology), species numbers. Habitat destruction is in fact the leading cause of biodiversity loss and species extinction worldwide. Humans contribute to habitat destruction through the Exploitation of natural resources, use of natural resources, agriculture, industrial production and urbanization (urban sprawl). Other activities include mining, logging and trawling. Environmental factors can contribute to habitat destruction more indirectly. Geological processes, climate change, introduced species, introduction of invasive species, ecosystem nutrient depletion, water pollution, water and noise pollution are some examples. Loss of habitat can be preceded by an initial habitat fragmentation. Fragmentation and lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cheirolophus Crassifolius Flower
''Cheirolophus'' is a genus of flowering plants in the family Asteraceae Asteraceae () is a large family (biology), family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the Order (biology), order Asterales. The number of species in Asteraceae is rivaled only by the Orchi ... first described as a genus in 1827. It is native to the western Mediterranean Region from the Canary Islands and Madeira, through Morocco and Algeria, continental Portugal and Spain, southern France, the Balearic Islands, Corsica, Sicily and Malta. ; Species References {{Taxonbar, from=Q276823 Asteraceae genera Cardueae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Valleys
A valley is an elongated low area often running between hills or mountains and typically containing a river or stream running from one end to the other. Most valleys are formed by erosion of the land surface by rivers or streams over a very long period. Some valleys are formed through erosion by glacial ice. These glaciers may remain present in valleys in high mountains or polar areas. At lower latitudes and altitudes, these glacially formed valleys may have been created or enlarged during ice ages but now are ice-free and occupied by streams or rivers. In desert areas, valleys may be entirely dry or carry a watercourse only rarely. In areas of limestone bedrock, dry valleys may also result from drainage now taking place underground rather than at the surface. Rift valleys arise principally from earth movements, rather than erosion. Many different types of valleys are described by geographers, using terms that may be global in use or else applied only locally. Form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cliffs
In geography and geology, a cliff or rock face is an area of rock which has a general angle defined by the vertical, or nearly vertical. Cliffs are formed by the processes of weathering and erosion, with the effect of gravity. Cliffs are common on coasts, in mountainous areas, escarpments and along rivers. Cliffs are usually composed of rock that is resistant to weathering and erosion. The sedimentary rocks that are most likely to form cliffs include sandstone, limestone, chalk, and dolomite. Igneous rocks such as granite and basalt also often form cliffs. An escarpment (or scarp) is a type of cliff formed by the movement of a geologic fault, a landslide, or sometimes by rock slides or falling rocks which change the differential erosion of the rock layers. Most cliffs have some form of scree slope at their base. In arid areas or under high cliffs, they are generally exposed jumbles of fallen rock. In areas of higher moisture, a soil slope may obscure the talus. Many cliff ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
