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Echinacea
''Echinacea'' is a genus of herbaceous flowering plants in the daisy family. It has ten species, which are commonly called coneflowers. They are found only in eastern and central North America, where they grow in moist to dry prairies and open wooded areas. They have large, showy heads of composite flowers, blooming in summer. The generic name is derived from the Greek word ('), meaning "sea urchin", due to the spiny central disk. These flowering plants and their parts have different uses. Some species are cultivated in gardens for their showy flowers. Two of the species, '' E. tennesseensis'' and '' E. laevigata'', are listed in the United States as endangered species. '' Echinacea purpurea'' is used in traditional medicine. Although commonly sold as a dietary supplement, there is insufficient scientific evidence that ''Echinacea'' products are effective or safe for improving health or treating any disease. Description ''Echinacea'' species are herbaceous, drought-toler ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinacea 3
''Echinacea'' is a Genus Species, genus of Herbaceous plant, herbaceous flowering plants in the Asteraceae, daisy family. It has ten species, which are commonly called coneflowers. They are found only in eastern and central North America, where they grow in moist to dry prairies and open wooded areas. They have large, showy Flower heads, heads of composite flowers, blooming in summer. The generic name is derived from the Greek word ('), meaning "sea urchin", due to the spiny central disk. These flowering plants and their parts have different uses. Some species are cultivated in gardens for their showy flowers. Two of the species, ''Echinacea tennesseensis, E. tennesseensis'' and ''Echinacea laevigata, E. laevigata'', are listed in the United States as endangered species. ''Echinacea purpurea'' is used in traditional medicine. Although commonly sold as a dietary supplement, there is insufficient evidence-based medicine, scientific evidence that ''Echinacea'' products are effect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinacea Purpurea
''Echinacea purpurea'', the eastern purple coneflower, purple coneflower, hedgehog coneflower, or echinacea, is a North American species of flowering plant in the family Asteraceae. It is native to parts of eastern North America and present to some extent in the wild in much of the eastern, southeastern and midwestern United States as well as in the Canadian Province of Ontario. It is most common in the Ozarks and in the Mississippi/Ohio Valley. Its habitats include dry open woods, prairies and barrens. Taxonomy ''Echinacea'' is derived from Greek, meaning 'spiny one', in reference to the spiny sea urchins 'εχίνοι' which the ripe flower heads of species of this genus resemble. The epithet ''purpurea'' means 'reddish-purple'. Originally named ''Rudbeckia purpurea'' by Linnaeus in 1753 in Species plantarum 6, it was reclassified in 1794 by Conrad Moench, in a new genus named ''Echinacea purpurea'' (L.) Moench. In 1818, Thomas Nuttall describes a new variety that he named ''Ru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echinacea Laevigata
''Echinacea laevigata'', the smooth purple coneflower, is an Endangered Species Act federally listed endangered speciesUSFWS''Echinacea laevigata'' (smooth coneflower) determined to be endangered.''Federal Register'' October 8, 1992. of plant found in the piedmont of the eastern United States. Most populations are found on roadsides and other open areas with plenty of sunlight, often on calcium- and magnesium- rich soils. Description ''Echinacea laevigata'' is a rhizomatous perennial herb that resembles its close relative, the common echinacea (''Echinacea purpurea''). The two can be told apart by the leaves, which are cordate (heart-shaped) in the common species. ''E. laevigata'' grows up to about 1.5 meters (5 feet) in height with a mostly naked, smooth, leafless stem. Any leaves are roughly lance-shaped. On top of the stem is a flower head containing narrow pink or purplish ray florets up to 8 centimeters (3.2 inches) long.USFWSSmooth Coneflower Recovery Plan.April 1995. Th ... [...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 Ruth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drought
A drought is defined as drier than normal conditions.Douville, H., K. Raghavan, J. Renwick, R.P. Allan, P.A. Arias, M. Barlow, R. Cerezo-Mota, A. Cherchi, T.Y. Gan, J. Gergis, D. Jiang, A. Khan, W. Pokam Mba, D. Rosenfeld, J. Tierney, and O. Zolina, 2021Water Cycle Changes In Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change [Masson-Delmotte, V., P. Zhai, A. Pirani, S.L. Connors, C. Péan, S. Berger, N. Caud, Y. Chen, L. Goldfarb, M.I. Gomis, M. Huang, K. Leitzell, E. Lonnoy, J.B.R. Matthews, T.K. Maycock, T. Waterfield, O. Yelekçi, R. Yu, and B. Zhou (eds.)]. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA, pp. 1055–1210, doi:10.1017/9781009157896.010. This means that a drought is "a moisture deficit relative to the average water availability at a given location and season". A drought can last for days, months or years. Drought ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yellow Coneflower Echinacea Paradoxa Closeup Bee 3008px
Yellow is the color between green and orange on the spectrum of light. It is evoked by light with a dominant wavelength of roughly 575585 nm. It is a primary color in subtractive color systems, used in painting or color printing. In the RGB color model, used to create colors on television and computer screens, yellow is a secondary color made by combining red and green at equal intensity. Carotenoids give the characteristic yellow color to autumn leaves, corn, canaries, daffodils, and lemons, as well as egg yolks, buttercups, and bananas. They absorb light energy and protect plants from photo damage in some cases. Sunlight has a slight yellowish hue when the Sun is near the horizon, due to atmospheric scattering of shorter wavelengths (green, blue, and violet). Because it was widely available, yellow ochre pigment was one of the first colors used in art; the Lascaux cave in France has a painting of a yellow horse 17,000 years old. Ochre and orpiment pigments were ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bee Pollinating A Flower At The National Zoo
Bees are winged insects closely related to wasps and ants, known for their roles in pollination and, in the case of the best-known bee species, the western honey bee, for producing honey. Bees are a monophyly, monophyletic lineage within the superfamily Apoidea. They are presently considered a clade, called Anthophila. There are over 16,000 known species of bees in seven recognized Family (biology), biological families. Some speciesincluding honey bees, bumblebees, and stingless beeslive eusociality, socially in colonies while most species (>90%)including mason bees, carpenter bees, Megachile, leafcutter bees, and Halictidae, sweat beesare solitary. Bees are found on every continent except Antarctica, in every habitat on the planet that contains insect-pollinated flowering plants. The most common bees in the Northern Hemisphere are the Halictidae, or sweat bees, but they are small and often mistaken for wasps or flies. Bees range in size from tiny stingless bee species, whose ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fasciation On An Echinacea Purpurea
Fasciation (pronounced , from the Latin root meaning "band" or "stripe"), also known as cresting, is a relatively rare condition of abnormal growth in vascular plants in which the apical meristem (growing tip), which normally is concentrated around a single point and produces approximately cylindrical tissue, instead becomes elongated perpendicularly to the direction of growth, thus producing flattened, ribbon-like, crested (or "cristate"), or elaborately contorted tissue. Fasciation may also cause plant parts to increase in weight and volume in some instances. The phenomenon may occur in the stem, root, fruit, or flower head. Some plants are grown and prized aesthetically for their development of fasciation. Any occurrence of fasciation has several possible causes, including hormonal, genetic, bacterial, fungal, viral and environmental causes. Cause Fasciation can be caused by hormonal imbalances in the meristematic cells of plants, which are cells where growth can occur. F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conrad Moench
Conrad Moench (sometimes written Konrad Mönch; 15 August 1744 – 6 January 1805) was a German botanist, professor of botany at Marburg University from 1786 until his death. He wrote 'Methodus Plantas horti botanici et agri Marburgensis' in 1794, an arranged account of plants in the fields and gardens of Marburg. In 1802 he named the plant '' Gillenia trifoliata'' in a supplement to a local flora of the city of Marburg. He also named the plant genus ''Echinacea'' (1794). The botanical genus '' Moenchia'' (family Caryophyllaceae Caryophyllaceae, commonly called the pink family or carnation family, is a family of flowering plants. It is included in the dicotyledon order Caryophyllales in the APG III system, alongside 33 other families, including Amaranthaceae, Cactacea ...) is named in his honor. The standard botanical author abbreviation Moench is applied to plants he described. Principal writings * ''Enumeratio plantarum indigenarum Hassiae praesertim inferioris, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evidence-based Medicine
Evidence-based medicine (EBM) is "the conscientious, explicit and judicious use of current best evidence in making decisions about the care of individual patients". The aim of EBM is to integrate the experience of the clinician, the values of the patient, and the best available scientific information to guide decision-making about clinical management. The term was originally used to describe an approach to teaching the practice of medicine and improving decisions by individual physicians about individual patients. Background, history and definition Medicine has a long history of scientific inquiry about the prevention, diagnosis, and treatment of human disease. The concept of a controlled clinical trial was first described in 1662 by Jan Baptist van Helmont in reference to the practice of bloodletting. Wrote Van Helmont: The first published report describing the conduct and results of a controlled clinical trial was by James Lind, a Scottish naval surgeon who conducted re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taproot
A taproot is a large, central, and dominant root from which other roots sprout laterally. Typically a taproot is somewhat straight and very thick, is tapering in shape, and grows directly downward. In some plants, such as the carrot, the taproot is a storage organ so well developed that it has been cultivated as a vegetable. The taproot system contrasts with the adventitious or fibrous root system of plants with many branched roots, but many plants that grow a taproot during germination go on to develop branching root structures, although some that rely on the main root for storage may retain the dominant taproot for centuries, for example ''Welwitschia''.Taproot also store nutrition. Plants with taproots are often vegetables. Description Dicots, one of the two divisions of flowering plants (angiosperms), start with a taproot, which is one main root forming from the enlarging radicle of the seed. The tap root can be persistent throughout the life of the plant but is most oft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caudex
A caudex (plural: caudices) of a plant is a stem, but the term is also used to mean a rootstock and particularly a basal stem structure from which new growth arises.pages 456 and 695 In the strict sense of the term, meaning a stem, "caudex" is most often used with plants that have a different stem morphology from the typical angiosperm dicotyledon stem: examples of this include palms, ferns, and cycad Cycads are seed plants that typically have a stout and woody ( ligneous) trunk with a crown of large, hard, stiff, evergreen and (usually) pinnate leaves. The species are dioecious, that is, individual plants of a species are either male or ...s. The related term caudiciform, literally meaning stem-like, is sometimes used to mean pachycaul, thick-stemmed. Etymology The term is from the Latin ''caudex'', a noun meaning "tree trunk". See also * Stipe References External links Bihrmann's Caudiciforms''Extensive listing of caudiciforms, images for most specie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
