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Paysonia Perforata
''Paysonia perforata'', known by the common name Spring Creek bladderpod, is a rare species of flowering plant in the mustard family. It is endemic to Tennessee in the United States, where it is known only from Wilson County.''Lesquerella perforata''. The Nature Conservancy. This very rare plant is threatened by the loss and degradation of its .USFWS ''Lesquerella perforata'' Recovery Plan. September 2006. It is federally listed as an |
Brassicaceae
Brassicaceae () or (the older) Cruciferae () is a medium-sized and economically important family of flowering plants commonly known as the mustards, the crucifers, or the cabbage family. Most are herbaceous plants, while some are shrubs. The leaves are simple (although are sometimes deeply incised), lack stipules, and appear alternately on stems or in rosettes. The inflorescences are terminal and lack bracts. The flowers have four free sepals, four free alternating petals, two shorter free stamens and four longer free stamens. The fruit has seeds in rows, divided by a thin wall (or septum). The family contains 372 genera and 4,060 accepted species. The largest genera are ''Draba'' (440 species), ''Erysimum'' (261 species), ''Lepidium'' (234 species), ''Cardamine'' (233 species), and ''Alyssum'' (207 species). The family contains the cruciferous vegetables, including species such as ''Brassica oleracea'' (cultivated as cabbage, kale, cauliflower, broccoli and collards), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agriculture
Agriculture or farming is the practice of cultivating plants and livestock. Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people to live in cities. The history of agriculture began thousands of years ago. After gathering wild grains beginning at least 105,000 years ago, nascent farmers began to plant them around 11,500 years ago. Sheep, goats, pigs and cattle were domesticated over 10,000 years ago. Plants were independently cultivated in at least 11 regions of the world. Industrial agriculture based on large-scale monoculture in the twentieth century came to dominate agricultural output, though about 2 billion people still depended on subsistence agriculture. The major agricultural products can be broadly grouped into foods, fibers, fuels, and raw materials (such as rubber). Food classes include cereals (grains), vegetables, fruits, cooking oils, meat, milk, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of Tennessee
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 Phyt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paysonia
''Paysonia'' is a genus of flowering plants in the family Brassicaceae. They are generally referred to by the common name bladderpod or mustard. The genus is found in southern North America. Until 2002 it was considered to be part of the genus '' Lesquerella'' but was separated based on genetic and morphological features. Species include: *'' Paysonia auriculata'' *'' Paysonia densipila'' *'' Paysonia grandifloa'' *''Paysonia lasiocarpa'' *'' Paysonia lescurii'' *''Paysonia lyrata ''Paysonia lyrata'' is a rare species of flowering plant in the family Brassicaceae known by the common name lyreleaf bladderpod. It is endemic to Alabama in the United States, where it is known from only three occurrences.USFWS''Lesquerella lyra ...'' *'' Paysonia perforata'' *'' Paysonia stonensis'' References {{Taxonbar, from=Q7156912 Brassicaceae genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nashville Metropolitan Statistical Area
The Nashville metropolitan area (officially, the Nashville-Davidson–Murfreesboro–Franklin, TN Metropolitan Statistical Area) is a metropolitan statistical area centered on Nashville, Tennessee, the capital and largest city in Tennessee, in the United States. With a population of just over 2 million, it is the most populous metropolitan area in Tennessee. It is also the largest metropolitan area in Tennessee, in terms of land area. The Office of Management and Budget defines the metro area for statistical use by the United States Census Bureau and other agencies. The area is the 35th largest metropolitan area in the United States. The metropolitan statistical area was first designated in 1950 and initially included only Davidson County. As surrounding counties increased in population and densities and in the number of their residents employed in Davidson County, the OMB added new counties to the MSA. Today, the metro area includes Davidson and 12 other counties. Geography T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinacea Tennesseensis
''Echinacea tennesseensis'', also known as the Tennessee coneflower or Tennessee purple coneflower, is a flowering plant in the family Asteraceae, endemic to the cedar glades of the central portion of the U.S. state of Tennessee. Description ''Echinacea tennesseensis'' is a herbaceous perennial plant growing to tall. The leaves are hairy, lanceolate, and arranged in a basal whorl with only a few small leaves on the flower stems. The flowers are produced in a capitulum (flowerhead) up to 8 cm (3.2 inches) broad, with a ring of purple ray florets surrounding the brown disc florets. A noticeable characteristic is its generally erect ray flowers, in contrast to the more drooping rays of its most similar congener, '' E. angustifolia'' (widespread throughout the prairie of the central U.S.) and other common ''Echinacea'' species such as '' E. purpurea''. Distribution ''Echinacea tennesseensis'' is a rare species, found in fewer than 10 locations in Davidson, Wilson, and Ru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dalea Gattingeri
''Dalea gattingeri'', commonly called purpletassles or Gattinger prairie clover, is a species of flowering plant in the legume family. It is native to the Southeastern United States, where it is restricted to limestone cedar glades of Tennessee, Alabama, Georgia, Missouri, and Arkansas. Its populations are widely dispersed and geographically small, with most populations being found in the Nashville Basin. It is a perennial that produces purple flowers in the summer. It has been shown to have alleopathic chemicals that inhibit the growth of nearby species ''Minuartia patula ''Minuartia patula'', common names pitcher's stitchwort or lime-barren sandwort, is an annual plant in the family Caryophyllaceae. It is native to sections of the eastern and central United States, primarily the lower Mississippi Valley, the sou ...''. References {{Taxonbar, from=Q15463120 gattingeri Flora of the Southeastern United States Endemic flora of the United States ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dalea Foliosa
''Dalea foliosa'', commonly called leafy prairie clover, is a species of flowering plant in the legume family ( Fabaceae). It is an endangered species in the United States, where it occurs in three states: Illinois, Tennessee, and Alabama.USFWS''Dalea foliosa'' (Leafy Prairie-Clover) determined to be endangered.''Federal Register'' May 1, 1991. Description This is a perennial herb growing 20 to 80 centimeters tall, with a number of erect stems sprouting from a hard root crown. The leaves are each made up of hairless oval leaflets measuring up to 1.3 centimeters long. The inflorescence is a cone-shaped or cylindrical spike of many purple flowers with pointed green bracts between them. Blooming occurs in summer.''Dalea foliosa''. Illinois Wildflowers. The flowers are pollinated by |
Boechera Perstellata
''Borodinia perstellata'', commonly known as Braun's rockcress and Nevada rockcress, is a rare species of flowering plant in the mustard family. It is native to Kentucky and Tennessee, where it is known from perhaps 25 total populations.Center for Plant Conservation Most of the occurrences have few individuals, and all are deteriorating in quality.The Nature Conservancy /ref> The plant grows in shady forest habitat on substrates, usually near streams or rivers. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limestone
Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly dolomite, a closely related rock, which contains a high percentage of the mineral dolomite, . ''Magnesian limestone'' is an obsolete and poorly-defined term used variously for dolomite, for limes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
No-till Farming
No-till farming (also known as zero tillage or direct drilling) is an agricultural technique for growing crops or pasture without disturbing the soil through tillage. No-till farming decreases the amount of soil erosion tillage causes in certain soils, especially in sandy and dry soils on sloping terrain. Other possible benefits include an increase in the amount of water that infiltrates into the soil, soil retention of organic matter, and nutrient cycling. These methods may increase the amount and variety of life in and on the soil. While conventional no-tillage systems use herbicides to control weeds, organic systems use a combination of strategies, such as planting cover crops as mulch to suppress weeds. There are three basic methods of no-till farming. "Sod seeding" is when crops are sown with seeding machinery into a sod produced by applying herbicides on a cover crop (killing that vegetation). "Direct seeding" is when crops are sown through the residue of previous crop. "S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plow
A plough or plow ( US; both ) is a farm tool for loosening or turning the soil before sowing seed or planting. Ploughs were traditionally drawn by oxen and horses, but in modern farms are drawn by tractors. A plough may have a wooden, iron or steel frame, with a blade attached to cut and loosen the soil. It has been fundamental to farming for most of history. The earliest ploughs had no wheels; such a plough was known to the Romans as an ''aratrum''. Celtic peoples first came to use wheeled ploughs in the Roman era. The prime purpose of ploughing is to turn over the uppermost soil, bringing fresh nutrients to the surface while burying weeds and crop remains to decay. Trenches cut by the plough are called furrows. In modern use, a ploughed field is normally left to dry and then harrowed before planting. Ploughing and cultivating soil evens the content of the upper layer of soil, where most plant-feeder roots grow. Ploughs were initially powered by humans, but the use of farm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
