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Sabatia Arkansana
''Sabatia arkansana'', commonly known as Pelton's rose gentian, is an herbaceous annual in the gentian family. It was discovered in 2001 in several glades of the Ouachita Mountains in Saline County, Arkansas by John Pelton, a retired mechanic turned amateur photographer and naturalist. It is known only from two locations in this county and is considered critically imperiled as a result of the presence of nearby housing developments and due to the absence of a fire regime. In summer it shows attractive rose-purple flowers. Description It is an annual plant growing to about 12 cm tall. The leaves are produced in opposite pairs, lanceolate, 5–15 mm long and 2–3 mm broad. The flowers are about 3.5 cm diameter, with a five-lobed corolla, purplish-pink with a pale yellow center, and five yellow stamens. The fruit is a capsule about 1 cm long. Similar species It is similar to and often occurs together with the related ''Sabatia campestris''. Pelton's ro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gentianaceae
Gentianaceae is a family of flowering plants of 103 genera and about 1600 species. Etymology The family takes its name from the genus '' Gentiana'', named after the Illyrian king Gentius. Distribution Distribution is cosmopolitan. Characteristics The family consists of trees, shrubs and herbs showing a wide range of colours and floral patterns. Flowers are actinomorphic and bisexual with fused sepals and petals. The stamens are attached to the inside of the petals ( epipetalous) and alternate with the corolla lobes. There is a glandular disk at the base of the gynoecium, and flowers have parietal placentation. The inflorescence is cymose, with simple or complex cymes. The fruits are dehiscent septicidal capsules splitting into two halves, rarely some species have a berry. Seeds are small with copiously oily endosperms and a straight embryo. The habit varies from small trees, pachycaul shrubs to (usually) herbs, with ascending, erect or twining stems. Plants are usually ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bauxite, Arkansas
Bauxite is a city in Saline County, Arkansas, United States. Located within Central Arkansas, the city is named for bauxite, the source ore for aluminum, which was found in abundant quantities in the area and became a source of aluminium refining. The city's population boomed during expanded aluminium production during World War II and shrank rapidly with output of the ore. Bauxite was incorporated as a town in 1973. The population was 487 at the 2010 census. History The ore for which the city is named was discovered in the area in the early 1890s and mined by the General Bauxite Company until 1905, when the Pittsburgh Reduction Company, a northeastern aluminium refining company, purchased vast tracts of land in Saline County after learning of the high-quality ore that was being shipped from the area. The company bought out the local producers of the ore, including the General Bauxite Company. Pittsburgh Reduction would go on to incorporate as the Aluminum Company of America, or A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of Arkansas
Geobotanically, Arkansas belongs to the North American Atlantic Region. Rare Species A *Amorpha ouachitensis - Ouachita leadplant *Amorpha paniculata - Panicled indigobush * Amsonia hubrichtii - Ouachita blue star * Astragalus soxmaniorum - Soxmans' milk-vetch B C * Calamagrostis porteri ssp. insperata - Ofer hollow reed grass *Calamovilfa arcuata - A sandgrass *Carex decomposita - Epiphytic sedge *Carex latebracteata - Waterfall's sedge *Carex shinnersii - Shinner's sedge *Carex timida - A sedge * Castanea pumila var. ozarkensis - Ozark chinquapin * Chelone obliqua var. speciosa - Rose turtlehead *Cunila origanoides - American dittany, mountain oregano * Cyperus grayoides - Umbrella sedge * Cypripedium kentuckiense - Southern lady's-slipper D *Delphinium newtonianum - Moore's larkspur *Delphinium treleasei - Trelease's larkspur * Dodecatheon frenchii - French's shootingstar *Draba aprica - Open-ground whitlow-grass *Datura E * Echinacea paradoxa - Bush's yellow coneflower ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sabatia
''Sabatia'', the rose gentians, is a genus of about 20 species of flowering plants in the family Gentianaceae, native to eastern and central North America (Nova Scotia west to Wisconsin and New Mexico, and south to Florida and Texas), Central America, and the Caribbean.Huxley, A., ed. (1992). ''New RHS Dictionary of Gardening'' 4: 157. Macmillan . They are annual plant, annual or perennial plant, perennial herbaceous plants growing to 10–130 cm tall, with opposite leaves. The flowers are produced in large Cyme (botany), cymes at the top of the stems; the flower Corolla (flower), corolla has 5–12 lobes, colored pink or white, with a contrasting central yellow 'eye'. The fruit is a capsule (fruit), capsule containing numerous small seeds. Selected species Source: USDA, Arkansas Native Plant SocietyWitsell, T. (2005). Pelton's Rose-Gentian. ''Claytonia'' 25 (2): 3pdf file *''Sabatia angularis'' *''Sabatia arenicola'' *''Sabatia arkansana'' *''Sabatia bartramii'' *''Sabati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montgomery County, Arkansas
Montgomery County is a county in the U.S. state of Arkansas. As of the 2010 census, the population was 9,487. The county seat is Mount Ida. Montgomery County is Arkansas's 45th county, formed on December 9, 1842, and named after Richard Montgomery, an American Revolutionary War general. History Stone spear and dart points found in the area verify that people from the Dalton Culture were present in Montgomery County around 8500 BC. Early signs of houses and American Indian cemeteries are present in and around Caddo Gap, Arkansas, indicating the definite presence of the Caddo Indians having settled in the area in the 13th century and 14th century. In 1541, the explorer Hernando de Soto fought the Tula Indians at Caddo Gap, and he was injured during that battle.Carter, Cecile Elkins''Caddo Indians: Where We Come From''.Norman: University of Oklahoma Press, 2001: 21. The first white settlers arrived in 1812, when Martin and Mary Collier settled what is now Caddo Gap. They befr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Garland County, Arkansas
Garland County is located in the U.S. state of Arkansas. As of the 2020 census, the population was 100,180. The county seat is Hot Springs. Garland County comprises the Hot Springs, AR Metropolitan Statistical Area. The county includes Hot Springs National Park, the only national park in the state of Arkansas as well as the first property to be protected under federal legislation. A law was passed in 1832 supported by President Andrew Jackson to preserve this area, even before Arkansas was admitted as a state. History This area was occupied by the historic Natchitoches people, who frequented the hot springs for their healing powers. Their ancestors among regional indigenous peoples had been coming to this area for thousands of years before their time. After acquiring the Louisiana Territory in 1803, which had been controlled by French and Spanish officials, President Thomas Jefferson requested William Dunbar, a planter and amateur scientist of Natchez, Mississippi, to exp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pulaski County, Arkansas
Pulaski County is located in the U.S. state of Arkansas with a population of 399,125, making it the most populous county in Arkansas. The county is included in the Little Rock–North Little Rock– Conway metropolitan area. Its county seat is Little Rock, which is also Arkansas's capital and largest city. Pulaski County is Arkansas's fifth county, formed on December 15, 1818, alongside Clark and Hempstead Counties. Pulaski County is named for Brigadier General Casimir Pulaski, a Polish-born Continental Army officer who was killed in action at the Siege of Savannah during the Revolutionary War. The county was the site of the Battle of Bayou Fourche on September 10, 1863. The Union army took control the same day and occupied Pulaski County until the end of the Civil War. The county was home to Willow Springs Water Park, one of the oldest water parks in the nation, which opened in 1928 and closed in 2013. Geography According to the U.S. Census Bureau, the county has a total ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Igneous
Igneous rock (derived from the Latin word ''ignis'' meaning fire), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magma or lava. The magma can be derived from partial melts of existing rocks in either a planet's mantle or crust. Typically, the melting is caused by one or more of three processes: an increase in temperature, a decrease in pressure, or a change in composition. Solidification into rock occurs either below the surface as intrusive rocks or on the surface as extrusive rocks. Igneous rock may form with crystallization to form granular, crystalline rocks, or without crystallization to form natural glasses. Igneous rocks occur in a wide range of geological settings: shields, platforms, orogens, basins, large igneous provinces, extended crust and oceanic crust. Geological significance Igneous and metamorphic rocks make up 90–95% of the top ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shale
Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4) and tiny fragments (silt-sized particles) of other minerals, especially quartz and calcite.Blatt, Harvey and Robert J. Tracy (1996) ''Petrology: Igneous, Sedimentary and Metamorphic'', 2nd ed., Freeman, pp. 281–292 Shale is characterized by its tendency to split into thin layers ( laminae) less than one centimeter in thickness. This property is called '' fissility''. Shale is the most common sedimentary rock. The term ''shale'' is sometimes applied more broadly, as essentially a synonym for mudrock, rather than in the more narrow sense of clay-rich fissile mudrock. Texture Shale typically exhibits varying degrees of fissility. Because of the parallel orientation of clay mineral flakes in shale, it breaks into thin layers, often splintery and usually parallel to the otherwise indistinguishable beddin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Missouri Botanical Gardens
The Missouri Botanical Garden is a botanical garden located at 4344 Shaw Boulevard in St. Louis, Missouri. It is also known informally as Shaw's Garden for founder and philanthropist Henry Shaw. Its herbarium, with more than 6.6 million specimens, is the second largest in North America, behind that of the New York Botanical Garden. The '' Index Herbariorum'' code assigned to the herbarium is MO and it is used when citing housed specimens. History The land that is currently the Missouri Botanical Garden was previously the land of businessman Henry Shaw. Founded in 1859, the Missouri Botanical Garden is one of the oldest botanical institutions in the United States and a National Historic Landmark. It is also listed in the National Register of Historic Places. In 1983, the botanical garden was added as the fourth subdistrict of the Metropolitan Zoological Park and Museum District. The garden is a center for botanical research and science education of international repute ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ontario
Ontario ( ; ) is one of the thirteen provinces and territories of Canada.Ontario is located in the geographic eastern half of Canada, but it has historically and politically been considered to be part of Central Canada. Located in Central Canada, it is Canada's most populous province, with 38.3 percent of the country's population, and is the second-largest province by total area (after Quebec). Ontario is Canada's fourth-largest jurisdiction in total area when the territories of the Northwest Territories and Nunavut are included. It is home to the nation's capital city, Ottawa, and the nation's most populous city, Toronto, which is Ontario's provincial capital. Ontario is bordered by the province of Manitoba to the west, Hudson Bay and James Bay to the north, and Quebec to the east and northeast, and to the south by the U.S. states of (from west to east) Minnesota, Michigan, Ohio, Pennsylvania, and New York. Almost all of Ontario's border with the United States f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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