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Echinopsis Schickendantzii
''Soehrensia schickendantzii'' is a cactus found in northwestern Argentina in provinces of Salta and Tucumán at elevations of 1600 to 3200 meters. Description ''Soehrensia schickendantzii'' grows shrubby, occasionally solitary, but usually branches out from the base and forms clumps. The cylindrical to elongated, shiny light green shoots are 15 to 25 centimeters long and have diameters of up to 6 centimeters. There are 14 to 18 low and somewhat sharp ribs that are notched. The areoles on it are very close together and occasionally even touch. The yellowish thorns originating from the areoles are flexible and up to 1 centimeter long. Four central spines are formed. Occasionally the number increases with age. There are nine marginal spines. The hypanthium is tubular to funnel-shaped, white, unscented flowers appear near the top of the shoot and open at night. They are 20 to 22 inches long. The flower tube is densely hairy black. The spherical, dark green fruits are sweet and tear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frédéric Albert Constantin Weber
Frédéric Albert Constantin Weber (17 May 1830 in Wolfisheim – 27 July 1903 in Paris) was a French botanist, who specialized in Cactaceae. In 1852 he received his medical doctorate from the University of Strasbourg with the thesis ''De l'hémorrhagie des méninges cérébrales''. In 1864–67 he served as a military physician on a French military expedition in Mexico. He is the taxonomic author or co-author of many species of cacti. He also described a few species of agave ''Agave'' (; ; ) is a genus of monocots native to the hot and arid regions of the Americas and the Caribbean, although some ''Agave'' species are also native to tropical areas of North America, such as Mexico. The genus is primarily known for ..., including '' Agave tequilana'', the tequila agave (1902). The genus '' Weberocereus'' commemorates his name. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argentina
Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, the fourth-largest country in the Americas, and the eighth-largest country in the world. It shares the bulk of the Southern Cone with Chile to the west, and is also bordered by Bolivia and Paraguay to the north, Brazil to the northeast, Uruguay and the South Atlantic Ocean to the east, and the Drake Passage to the south. Argentina is a federal state subdivided into twenty-three provinces, and one autonomous city, which is the federal capital and largest city of the nation, Buenos Aires. The provinces and the capital have their own constitutions, but exist under a federal system. Argentina claims sovereignty over the Falkland Islands, South Georgia and the South Sandwich Islands, and a part of Antarctica. The earliest recorded human prese ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salta Province
Salta () is a province of Argentina, located in the northwest of the country. Neighboring provinces are from the east clockwise Formosa, Chaco, Santiago del Estero, Tucumán and Catamarca. It also surrounds Jujuy. To the north it borders Bolivia and Paraguay and to the west lies Chile. History Before the Spanish conquest, numerous native peoples (now called Diaguitas and Calchaquíes) lived in the valleys of what is now Salta Province; they formed many different tribes, the Quilmes and Humahuacas among them, which all shared the Cacán language. The Atacamas lived in the Puna, and the Wichís (Matacos), in the Chaco region. The first conquistador to venture into the area was Diego de Almagro in 1535; he was followed by Diego de Rojas. Hernando de Lerma founded San Felipe de Lerma in 1582, following orders of the viceroy Francisco de Toledo, Count of Oropesa; the name of the city was soon changed to "San Felipe de Salta". By 1650, the city had around five hundred inhabitan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tucumán Province
Tucumán () is the most densely populated, and the second-smallest by land area, of the provinces of Argentina. Located in the northwest of the country, the province has the capital of San Miguel de Tucumán, often shortened to Tucumán. Neighboring provinces are, clockwise from the north: Salta, Santiago del Estero and Catamarca. It is nicknamed El Jardín de la República (''The Garden of the Republic''), as it is a highly productive agricultural area. Etymology The word ''Tucumán'' probably originated from the Quechua languages. It may represent a deformation of the term ''Yucumán'', which denotes the "place of origin of several rivers". It can also be a deformation of the word ''Tucma'', which means "the end of things". Before Spanish colonization, the region lay in the outer limits of the Inca empire. History Before the Spanish colonization, this land was inhabited by the Diaguitas and Tonocotes. In 1533, Diego de Almagro explored the Argentine Northwest, incl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circumscription (taxonomy)
In biological taxonomy, circumscription is the content of a taxon, that is, the delimitation of which subordinate taxa are parts of that taxon. If we determine that species X, Y, and Z belong in Genus A, and species T, U, V, and W belong in Genus B, those are our circumscriptions of those two genera. Another systematist might determine that T, U, V, W, X, Y, and Z all belong in genus A. Agreement on circumscriptions is not governed by the Codes of Zoological or Botanical Nomenclature, and must be reached by scientific consensus. A goal of biological taxonomy is to achieve a stable circumscription for every taxon. This goal conflicts, at times, with the goal of achieving a natural classification that reflects the evolutionary history of divergence of groups of organisms. Balancing these two goals is a work in progress, and the circumscriptions of many taxa that had been regarded as stable for decades are in upheaval in the light of rapid developments in molecular phylogenetics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Friedrich Schickendantz
Friedrich Schickendantz (also known as Federico Schickendantz) (15 January 1837 – 4 April 1896) was a Germans, German naturalized Argentine scientist who worked in the fields of mineralogy, chemistry, botany, geology, and meteorology. He was born in Landau, now in the Rhineland-Palatinate state of Germany. He studied chemistry and mineralogy at the University of Munich and the University of Heidelberg, under the direction of Robert Bunsen. Schickendantz was one of the attendees of the 1860 Karlsruhe Congress. In 1861, while he was at Oxford, he decided to take a job at a mine in Pilciao, Andalgalá, in the Argentine province of Catamarca Province, Catamarca. The mine, called Casa Lafone, was owned by Samuel Fisher Lafone. Schickendantz worked at the mine until 1868; during this time he became a close friend of the supervisor of the mine, Samuel Lafone Quevedo, son of Fisher Lafone and developed what became known as the Schickendantz method for separating gold from copper. Schick ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cacti Of South America
A cactus (, or less commonly, cactus) is a member of the plant family Cactaceae, a family comprising about 127 genera with some 1750 known species of the order Caryophyllales. The word ''cactus'' derives, through Latin, from the Ancient Greek word (''káktos''), a name originally used by Theophrastus for a spiny plant whose identity is now not certain. Cacti occur in a wide range of shapes and sizes. Although some species live in quite humid environments, most cacti live in habitats subject to at least some drought. Many live in extremely dry environments, even being found in the Atacama Desert, one of the driest places on Earth. Because of this, cacti show many adaptations to conserve water. For example, almost all cacti are succulents, meaning they have thickened, fleshy parts adapted to store water. Unlike many other succulents, the stem is the only part of most cacti where this vital process takes place. Most species of cacti have lost true leaves, retaining only spines, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of Northwest Argentina
Flora is all the plant life present in a particular region or time, generally the naturally occurring (indigenous) native plants. Sometimes bacteria and fungi are also referred to as flora, as in the terms ''gut flora'' or '' skin flora''. Etymology The word "flora" comes from the Latin name of Flora, the goddess of plants, flowers, and fertility in Roman mythology. The technical term "flora" is then derived from a metonymy of this goddess at the end of the sixteenth century. It was first used in poetry to denote the natural vegetation of an area, but soon also assumed the meaning of a work cataloguing such vegetation. Moreover, "Flora" was used to refer to the flowers of an artificial garden in the seventeenth century. The distinction between vegetation (the general appearance of a community) and flora (the taxonomic composition of a community) was first made by Jules Thurmann (1849). Prior to this, the two terms were used indiscriminately.Thurmann, J. (1849). ''Essai de Phy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
