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Cistus Munbyi
''Cistus munbyi'' is a shrubby species of flowering plant in the family Cistaceae, with white flowers. Related to and resembling ''Cistus clusii'', it is native to Morocco and Algeria in western north Africa. Description ''Cistus munbyi'' has narrow linear leaves with a single prominent vein, generally long by wide, with edges that are turned down (revolute). The upper surfaces of the leaves are smooth, the lower surfaces have a dense covering of short stellate hairs. It has white flowers. ''C. munbyi'' resembles '' C. clusii'', but the flower-bearing branches are longer and the flower stalks ( peduncles) and sepals are covered with white hairs, making them appear silky ("''sericeus''"). Taxonomy Giles Munby gave a description of this species under the name ''Cistus sericeus'' in 1847. The name had already been published by Martin Vahl in 1790, so that Munby's name is illegitimate. Auguste Nicolas Pomel published the currently used name in 1874, the specific epithet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shrub
A shrub or bush is a small to medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees by their multiple Plant stem, stems and shorter height, less than tall. Small shrubs, less than tall are sometimes termed as subshrubs. Many botany, botanical groups have species that are shrubs, and others that are trees and herbaceous plants instead. Some define a shrub as less than and a tree as over 6 m. Others use as the cutoff point for classification. Many trees do not reach this mature height because of hostile, less than ideal growing conditions, and resemble shrub-sized plants. Others in such species have the potential to grow taller in ideal conditions. For longevity, most shrubs are classified between Perennial plant, perennials and trees. Some only last about five years in good conditions. Others, usually larger and more woody, live beyond ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nomen Illegitimum
''Nomen illegitimum'' (Latin for illegitimate name) is a technical term used mainly in botany. It is usually abbreviated as ''nom. illeg.'' Although the International Code of Nomenclature for algae, fungi, and plants uses Latin terms as qualifiers for taxon names (e.g. ''nomen conservandum'' for "conserved name", and ''nomen superfluum'' for "superfluous name"), the definition of each term is in English rather than Latin. The Latin abbreviations are widely used by botanists and mycologists. Definition A ''nomen illegitimum'' is a validly published name (botany), validly published name, but one that contravenes some of the articles laid down by the International Botanical Congress.Melbourne Code (2012) The name could be illegitimate because: * (article 52) it was superfluous at its time of publication, i.e., the taxon (as represent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The International Plant Names Index
The International Plant Names Index (IPNI) describes itself as "a database of the names and associated basic bibliographical details of seed plants, ferns and lycophytes." Coverage of plant names is best at the rank of species and genus. It includes basic bibliographical details associated with the names. Its goals include eliminating the need for repeated reference to primary sources for basic bibliographic information about plant names. The IPNI also maintains a list of standardized author abbreviations. These were initially based on Brummitt & Powell (1992), but new names and abbreviations are continually added. Description IPNI is the product of a collaboration between The Royal Botanic Gardens, Kew (Index Kewensis), The Harvard University Herbaria (Gray Herbarium Index), and the Australian National Herbarium ( APNI). The IPNI database is a collection of the names registered by the three cooperating institutions and they work towards standardizing the information. The stand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oran
Oran () is a major coastal city located in the northwest of Algeria. It is considered the second most important city of Algeria, after the capital, Algiers, because of its population and commercial, industrial and cultural importance. It is west-southwest from Algiers. The total population of the city was 803,329 in 2008, while the metropolitan area has a population of approximately 1,500,000, making it the second-largest city in Algeria. Etymology The word ''Wahran'' comes from the Berber expression ''wa - iharan'' (place of lions). A locally popular legend tells that in the period around AD 900, there were sightings of Barbary lions in the area. The last two lions were killed on a mountain near Oran, and it became known as ''la montagne des lions'' ("The Mountain of Lions"). Two giant lion statues stand in front of Oran's city hall, symbolizing the city. History Overview During the Roman Empire, a small settlement called ''Unica Colonia'' existed in the area of the current ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alkali Soil
Alkali, or alkaline, soils are clay soils with high pH (greater than 8.5), a poor soil structure and a low infiltration capacity. Often they have a hard calcareous layer at 0.5 to 1 metre depth. Alkali soils owe their unfavorable physico-chemical properties mainly to the dominating presence of sodium carbonate, which causes the soil to swellManaging irrigation water quality, Oregon State University, USA Retrieved on 2012-10-04. and difficult to clarify/settle. They derive their name from the group of elements, to which |
Cistus
''Cistus'' (from the Greek ''kistos'') is a genus of flowering plants in the rockrose family Cistaceae, containing about 20 species (Ellul ''et al.'' 2002). They are perennial shrubs found on dry or rocky soils throughout the Mediterranean region, from Morocco, Spain, Italy, Greece, through to the Middle East, and also on the Canary Islands. ''Cistus'', with its many hybrids and cultivars, is commonly encountered as a garden flower. The common name rockrose (rock rose in the UK) is applied to the species, a name also shared by the related genera '' Helianthemum'' and '' Tuberaria'', all in the family Cistaceae. The common name ''gum cistus'' is applied to resin-bearing species, especially ''C. ladanifer''. Sometimes known as 'Pheasant's Compromise' Description The leaves are evergreen, opposite, simple, usually slightly rough-surfaced, 2–8 cm long. In a few species (notably ''C. ladanifer''), the leaves are coated with a highly aromatic resin called labdanum. They ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clade
In biology, a clade (), also known as a Monophyly, monophyletic group or natural group, is a group of organisms that is composed of a common ancestor and all of its descendants. Clades are the fundamental unit of cladistics, a modern approach to taxonomy adopted by most biological fields. The common ancestor may be an individual, a population, or a species (extinct or Extant taxon, extant). Clades are nested, one in another, as each branch in turn splits into smaller branches. These splits reflect evolutionary history as populations diverged and evolved independently. Clades are termed ''monophyletic'' (Greek: "one clan") groups. Over the last few decades, the cladistic approach has revolutionized biological classification and revealed surprising evolutionary relationships among organisms. Increasingly, taxonomists try to avoid naming Taxon, taxa that are not clades; that is, taxa that are not Monophyly, monophyletic. Some of the relationships between organisms that the molecul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molecular Phylogenetics
Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to determine the processes by which diversity among species has been achieved. The result of a molecular phylogenetics, phylogenetic analysis is expressed in a phylogenetic tree. Molecular phylogenetics is one aspect of molecular systematics, a broader term that also includes the use of molecular data in Taxonomy (biology), taxonomy and biogeography. Molecular phylogenetics and molecular evolution correlate. Molecular evolution is the process of selective changes (mutations) at a molecular level (genes, proteins, etc.) throughout various branches in the tree of life (evolution). Molecular phylogenetics makes inferences of the evolutionary relationships that arise due to molecular evolution and results in the construction of a phylogenetic tre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Auguste Nicolas Pomel
Nicolas Auguste Pomel (20 September 1821 – 2 August 1898) was a French geologist, paleontologist and botanist. He worked as a mines engineer in Algeria and became a specialist in north African vertebrate fossils. He was Senator of Algeria for Oran from 1876 to 1882. Life Nicolas-Auguste Pomel was born in Issoire, Puy-de-Dôme, on 20 September 1821. He studied at the Lycée de Clermont and earned his '' licence ès sciences''. He was conscripted into the army when he was prepared to enter the École des mines. He became a civil engineer after being released. After the coup d'état of 2 December 1851 his Republican beliefs earned him deportation. He became a ''Garde des mines'' in Oran in 1866, and was promoted to the 1st class in 1872. From 1876 to 1882 he was member of the Senate (Oran division). In 1882 he was tasked with geological mapping of Algeria. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Martin Vahl
Martin Henrichsen Vahl (10 October 1749 – 24 December 1804) was a Denmark-Norway, Danish-Norwegian botanist, herbalist and zoologist. Biography Martin Vahl was born in Bergen, Norway and attended Bergen Cathedral School. He studied botany at the University of Copenhagen and at Uppsala University under Carl Linnaeus. He edited ''Flora Danica'' fasc. XVI-XXI (1787–1799), ''Symbolæ Botanicæ'' I-III (1790–1794), ''Eclogæ Americanæ'' I-IV (1796–1807) and ''Enumeratio Plantarum'' I-II (1804–1805). He lectured at the University of Copenhagen Botanical Garden from 1779 to 1782. Vahl made several research trips in Europe and North Africa between 1783 and 1788. He became professor at Naturhistorieselskabet, the Society for Natural History at the University of Copenhagen in 1786 and was a full professor of botany from 1801 to his death. In 1792, he was elected a foreign member of the Royal Swedish Academy of Sciences. He died in Copenhagen, Denmark at age 55. His son Jens Va ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour, or ecological niche. In addition, palaeontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. About 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomen". The first part of a binomen is the name of a genus to which the species belongs. The second part is called the specific name (zoology), specific name or the specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giles Munby
Giles Munby (1813–1876) was an English botanist. His major work concerned plants in North Africa, where he lived for 15 years. Life Born at York, was the youngest son of Joseph Munby, a solicitor and under-sheriff of Yorkshire, but was orphaned when still very young. On leaving school Munby was apprenticed to a surgeon named Brown in York, and was involved in attending to the poor during the cholera epidemic of 1832. Entering the medical school of the University of Edinburgh, he attended the botanical lectures and excursions held by Robert Graham. Munby then "walked the hospitals" in London and, in 1835, in Paris, where he began a lifelong friendship with John Percy. Together they studied under Adrien-Henri de Jussieu and his assistants, Jean Baptiste Antoine Guillemin and Joseph Decaisne, and Munby passed the examinations for the degree of M.D. at the University of Montpellier. They visited Dijon and, after returning to Edinburgh, started once more, in 1836, for the south of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
