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Tall Fescue
''Festuca arundinacea'' ( syn., ''Schedonorus arundinaceus'' and ''Lolium arundinaceum'') is a species of grass commonly known as tall fescue. It is a cool-season perennial C3 species of bunchgrass native to Europe. It is an important forage grass throughout Europe, and many cultivars have been used in agriculture. It is also an ornamental grass in gardens, and a phytoremediation plant. The predominant cultivar found in British pastures is S170, an endophyte-free variety. In its native European environment, tall fescue is found in damp grasslands, river banks, and in coastal seashore locations. Its distribution is a factor of climatic, edaphic, or other environmental attributes. In New Zealand, where it is introduced, the species is particularly prolific in salt marshes, where it is often a major part of the plant biota. History Festuca arundinacea was originally developed in Kew Gardens in the United Kingdom.Cougnon et al. (2013). Performance and quality of tall fescue (Festu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Christian Daniel Von Schreber
Johann Christian Daniel von Schreber (17 January 1739 in Weißensee, Thuringia – 10 December 1810 in Erlangen), often styled J.C.D. von Schreber, was a German naturalist. Career He was appointed professor of'' materia medica'' at the University of Erlangen in 1769. In 1774, he began writing a multivolume set of books entitled ''Die Säugethiere in Abbildungen nach der Natur mit Beschreibungen'', which focused on the mammals of the world. Many of the animals included were given a scientific name for the first time, following the binomial system of Carl Linnaeus. From 1791 until his death in 1810, he was the president of the German Academy of Sciences Leopoldina. He was elected a member of the Royal Swedish Academy of Sciences in 1787. In April 1795, he was elected a Fellow of the Royal Society Numerous honors were bestowed on him, including the office of an imperial count palatine. Schreber also wrote on entomology, notably ''Schreberi Novae Species Insectorvm''. His herba ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Invasive Species
An invasive species otherwise known as an alien is an introduced organism that becomes overpopulated and harms its new environment. Although most introduced species are neutral or beneficial with respect to other species, invasive species adversely affect habitats and bioregions, causing ecological, environmental, and/or economic damage. The term can also be used for native species that become harmful to their native environment after human alterations to its food webfor example the purple sea urchin ('' Strongylocentrotus purpuratus'') which has decimated kelp forests along the northern California coast due to overharvesting of its natural predator, the California sea otter (''Enhydra lutris''). Since the 20th century, invasive species have become a serious economic, social, and environmental threat. Invasion of long-established ecosystems by organisms is a natural phenomenon, but human-facilitated introductions have greatly increased the rate, scale, and geographic range ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Auricle (botany)
In botany, an auricle is a small ear-like projection from the base of a leaf or petal Petals are modified leaves that surround the reproductive parts of flowers. They are often brightly colored or unusually shaped to attract pollinators. All of the petals of a flower are collectively known as the ''corolla''. Petals are usuall .... ReferencesDictionary of Botany Plant morphology {{botany-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ligule
A ligule (from "strap", variant of ''lingula'', from ''lingua'' "tongue") is a thin outgrowth at the junction of leaf and leafstalk of many grasses (Poaceae) and sedges. A ligule is also a strap-shaped extension of the corolla, such as that of a ray floret in plants in the daisy family Asteraceae. Poaceae and Cyperaceae The ligule is part of the leaf that is found at the junction of the blade and sheath of the leaf. It may take several forms, but it is commonly some form of translucent membrane or a fringe of hairs. The membranous ligule can be very short 1–2 mm ( Kentucky bluegrass, ''Poa pratensis'') to very long 10–20 mm ( Johnson grass, ''Sorghum halepense''), it can also be smooth on the edge or very ragged. Some grasses do not have a ligule, for example barnyardgrass ('' Echinochloa crus-galli''). A ligule can also be defined as a membrane-like tissue or row of delicate hairs typically found in grasses at the junction of the leaf sheath and blade. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photosynthesis
Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's activities. Some of this chemical energy is stored in carbohydrate molecules, such as sugars and starches, which are synthesized from carbon dioxide and water – hence the name ''photosynthesis'', from the Greek ''phōs'' (), "light", and ''synthesis'' (), "putting together". Most plants, algae, and cyanobacteria perform photosynthesis; such organisms are called photoautotrophs. Photosynthesis is largely responsible for producing and maintaining the oxygen content of the Earth's atmosphere, and supplies most of the energy necessary for life on Earth. Although photosynthesis is performed differently by different species, the process always begins when energy from light is absorbed by proteins called reaction centers that contain green chlorophyll (and other colored) pigments/chromophor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schedonorus Arundinaceus - Flickr - Matt Lavin
''Lolium'' is a genus of tufted grasses in the bluegrass subfamily (Pooideae). It is often called ryegrass, but this term is sometimes used to refer to grasses in other genera. They are characterized by bunch-like growth habits. ''Lolium'' is native to Europe, Asia and northern Africa, as well as being cultivated and naturalized in Australia, the Americas, and various oceanic islands. Ryegrasses are naturally diploid, with 2n=14, and are closely related to the fescues (''Festuca''). Ryegrass should not be confused with rye, which is a grain crop. Species Species of ''Lolium'' include: * ''Lolium arundinaceum'' (Schreb.) Darbysh. - Eurasia + North Africa from Portugal + Canary Islands to Himalayas + Xinjiang; naturalized in East Asia, Australia, North + South America, various islands * ''Lolium canariense'' Steud. - Canary Islands ryegrass - Canary Islands, Cape Verde * ''Lolium giganteum '' Lam. - Eurasia from Ireland to China; Bioko * ''Lolium hybridum'' Hausskn. - Assam, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White House
The White House is the official residence and workplace of the president of the United States. It is located at 1600 Pennsylvania Avenue NW in Washington, D.C., and has been the residence of every U.S. president since John Adams in 1800. The term "White House" is often used as a metonym for the president and his advisers. The residence was designed by Irish-born architect James Hoban in the neoclassical style. Hoban modelled the building on Leinster House in Dublin, a building which today houses the Oireachtas, the Irish legislature. Construction took place between 1792 and 1800, using Aquia Creek sandstone painted white. When Thomas Jefferson moved into the house in 1801, he (with architect Benjamin Henry Latrobe) added low colonnades on each wing that concealed stables and storage. In 1814, during the War of 1812, the mansion was set ablaze by British forces in the Burning of Washington, destroying the interior and charring much of the exterior. Reconstr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Lawn
The South Lawn at the White House in Washington, D.C., is directly south of the house and is bordered on the east by East Executive Drive and the Treasury Building, on the west by West Executive Drive and the Old Executive Office Building, and along its curved southern perimeter by South Executive Drive and a large circular public lawn called The Ellipse. Since the address of the White House is 1600 Pennsylvania Avenue NW, and the North Lawn faces Pennsylvania Avenue, the South Lawn is sometimes described as the back lawn of the White House. Description and use The South Lawn presents a long north–south vista from the house. Open to the public until the Second World War, it is now a closed part of the White House grounds that provides a setting for official events like the State Arrival Ceremony as well as informal gatherings including the annual White House Egg Rolling Contest and staff barbecues. Marine One, the presidential helicopter, departs from and lands on the Sout ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sweet Sorghum
Sweetness is a basic taste most commonly perceived when eating foods rich in sugars. Sweet tastes are generally regarded as pleasurable. In addition to sugars like sucrose, many other chemical compounds are sweet, including aldehydes, ketones, and sugar alcohols. Some are sweet at very low concentrations, allowing their use as non-caloric sugar substitutes. Such non-sugar sweeteners include saccharin and aspartame. Other compounds, such as miraculin, may alter perception of sweetness itself. The perceived intensity of sugars and high-potency sweeteners, such as Aspartame and Neohesperidin Dihydrochalcone, are heritable, with gene effect accounting for approximately 30% of the variation. The chemosensory basis for detecting sweetness, which varies between both individuals and species, has only begun to be understood since the late 20th century. One theoretical model of sweetness is the multipoint attachment theory, which involves multiple binding sites between a sweetn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Menifee County, Kentucky
Menifee County is a county located in the U.S. state of Kentucky. As of the 2020 census, the population was 6,113, making it the fifth-least populous county in Kentucky. Its county seat is Frenchburg. The county is named for Richard Hickman Menefee, U.S. Congressman, although the spelling has changed. It is a prohibition or dry county. Menifee County is part of the Mount Sterling, KY Micropolitan Statistical Area, which is also included in the Lexington-Fayette-Richmond- Frankfort, KY Combined Statistical Area. It is located in the foothills of the Cumberland Plateau. History Menifee County was formed on May 29, 1869, from portions of Bath, Montgomery, Morgan, Powell, and Wolfe counties. In the 2008 Presidential Election Menifee County was one of eight in the state of Kentucky where the majority of voters voted for Barack Obama. On March 2, 2012, an EF3 tornado hit Menifee county and several other surrounding counties. Many were injured, and three were killed. Geog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Kentucky
The University of Kentucky (UK, UKY, or U of K) is a public land-grant research university in Lexington, Kentucky. Founded in 1865 by John Bryan Bowman as the Agricultural and Mechanical College of Kentucky, the university is one of the state's two land-grant universities (the other being Kentucky State University) and the institution with the highest enrollment in the state, with 30,545 students as of fall 2019. The institution comprises 16 colleges, a graduate school, 93 undergraduate programs, 99 master programs, 66 doctoral programs, and four professional programs. It is classified among "R1: Doctoral Universities – Very high research activity". According to the National Science Foundation, Kentucky spent $393 million on research and development in 2018, ranking it 63rd in the nation. The University of Kentucky has fifteen libraries on campus. The largest is the William T. Young Library, a federal depository, hosting subjects related to social sciences, humanit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kentucky 31
Kentucky ( , ), officially the Commonwealth of Kentucky, is a state in the Southeastern region of the United States and one of the states of the Upper South. It borders Illinois, Indiana, and Ohio to the north; West Virginia and Virginia to the east; Tennessee to the south; and Missouri to the west. Its northern border is defined by the Ohio River. Its capital is Frankfort, and its two largest cities are Louisville and Lexington. Its population was approximately 4.5 million in 2020. Kentucky was admitted into the Union as the 15th state on June 1, 1792, splitting from Virginia in the process. It is known as the "Bluegrass State", a nickname based on Kentucky bluegrass, a species of green grass found in many of its pastures, which has supported the thoroughbred horse industry in the center of the state. Historically, it was known for excellent farming conditions for this reason and the development of large tobacco plantations akin to those in Virginia and North Carolina in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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