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Tansy
Tansy (''Tanacetum vulgare'') is a perennial, herbaceous flowering plant in the genus ''Tanacetum'' in the aster family, native to temperate Europe and Asia. It has been introduced to other parts of the world, including North America, and in some areas has become invasive. It is also known as common tansy, bitter buttons, cow bitter, or golden buttons. The Latin word ''vulgare'' means "common". Description Tansy is a flowering herbaceous plant with finely divided compound leaves and yellow, button-like flowers. It has a stout, somewhat reddish, erect stem, usually smooth, tall, and branching near the top. The leaves are alternate, long and are pinnately lobed, divided almost to the center into about seven pairs of segments, or lobes, which are again divided into smaller lobes having saw-toothed edges, giving the leaf a somewhat fern-like appearance. The roundish, flat-topped, button-like, yellow flower heads are produced in terminal clusters from mid-to-late summer. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tansy Beetle
The tansy beetle (''Chrysolina graminis'') is a species of leaf beetle. It measures 7.7–10.5 mm in length and has a characteristic bright metallic green colouration. The common name derives from the tansy plant on which they often feed as both larvae and adults. In addition to the nominotypical subspecies, which repeats the specific name, ''C. graminis graminis'', there are five further distinct subspecies of tansy beetle, which, collectively, have a Palearctic distribution, although in the majority of countries where it is found the species is declining. In the United Kingdom it is designated as 'Nationally Rare' and this localised population, centred on York, North Yorkshire, has been the subject of much recent research. Taxonomy The tansy beetle was first described by Carl Linnaeus in his landmark 1758 10th edition of ''Systema Naturae'' as ''Chrysomela graminis'' and was later transferred to the genus '' Chrysolina''. The genus ''Chrysolina'' currently contains 39 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tanacetum
''Tanacetum'' is a genus of about 160 species of flowering plants in the aster family, Asteraceae, native to many regions of the Northern Hemisphere.''Tanacetum''. Flora of North America. They are known commonly as tansies.''Tanacetum''. Integrated Taxonomic Information System (ITIS). The name tansy can refer specifically to '''', which may be called the common tansy or garden tansy for clarity. The generic name ''Tanacetum'' means 'immortality' in [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jacobaea Vulgaris
''Jacobaea vulgaris'', syn. ''Senecio jacobaea'', is a very common wild flower in the family Asteraceae that is native to northern Eurasia, usually in dry, open places, and has also been widely distributed as a weed elsewhere. Common names include ragwort, common ragwort, smegplant, stinking willie, tansy ragwort, benweed, James, son of Zebedee, St. James-wort, stinking nanny/ninny/willy, staggerwort, dog standard, cankerwort, stammerwort. In the western United States it is generally known as tansy ragwort, or tansy, though its resemblance to the true tansy is superficial. In some countries it is an invasive species and regarded as a noxious weed. In the UK, where it is native, it is often unwanted because of its toxic effect for cattle and horses, but it is also valued for its nectar production which feeds insect pollinators and its ecological importance is thus considered significant. Description The plant is generally considered to be biennial but it has the tendency to e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Descurainia Pinnata
''Descurainia pinnata'' is a species of flowering plant in the family Brassicaceae known by the common name western tansymustard. It is native to North America, where it is widespread and found in varied habitats. It is especially successful in deserts. It is a hardy plant which easily becomes weedy, and can spring up in disturbed, barren sites with bad soil. This is a hairy, heavily branched, mustardlike annual which is quite variable in appearance. There are several subspecies which vary from each other and individuals within a subspecies may look different depending on the climate they endure. This may be a clumping thicket or a tall, erect mustard. It generally does not exceed 70 centimeters in height. It has highly lobed or divided leaves with pointed, toothed lobes or leaflets. At the tips of the stem branches are tiny yellow flowers. The fruit is a silique one half to two centimeters long upon a threadlike pedicel. This plant reproduces only from seed. This tansymustard is t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thujone
Thujone () is a ketone and a monoterpene that occurs predominantly in two diastereomeric (epimeric) forms: (−)-α-thujone and (+)-β-thujone. Though it is best known as a chemical compound in the spirit absinthe, it is unlikely to be responsible for absinthe's alleged stimulant and psychoactive effects due to the small quantities present. Thujone acts on the neurotransmitter gamma-aminobutyric acid (GABA) as an antagonist (opposite to the effects of alcohol). As a competitive antagonist of GABA, thujone alone is considered to be convulsant, though by interfering with the inhibitory transmitter GABA, it may convey stimulating, mood-elevating effects at low doses. It is also used in perfumery as a component of several essential oils. In addition to the naturally occurring (−)-α-thujone and (+)-β-thujone, two other forms are possible: (+)-α-thujone and (−)-β-thujone. In 2016, they were found in nature as well, in ''Salvia officinalis''. File:(-)-alpha-Thujon.svg, (−) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteraceae
The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae were first described in the year 1740. The number of species in Asteraceae is rivaled only by the Orchidaceae, and which is the larger family is unclear as the quantity of extant species in each family is unknown. Most species of Asteraceae are annual, biennial, or perennial herbaceous plants, but there are also shrubs, vines, and trees. The family has a widespread distribution, from subpolar to tropical regions in a wide variety of habitats. Most occur in hot desert and cold or hot semi-desert climates, and they are found on every continent but Antarctica. The primary common characteristic is the existence of sometimes hundreds of tiny individual florets which are held together by protective involucres in flower heads, or more technicall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbaceous
Herbaceous plants are vascular plants that have no persistent woody stems above ground. This broad category of plants includes many perennials, and nearly all annuals and biennials. Definitions of "herb" and "herbaceous" The fourth edition of the ''Shorter Oxford English Dictionary'' defines "herb" as: #"A plant whose stem does not become woody and persistent (as in a tree or shrub) but remains soft and succulent, and dies (completely or down to the root) after flowering"; #"A (freq. aromatic) plant used for flavouring or scent, in medicine, etc.". (See: Herb) The same dictionary defines "herbaceous" as: #"Of the nature of a herb; esp. not forming a woody stem but dying down to the root each year"; #"BOTANY Resembling a leaf in colour or texture. Opp. scarious". Botanical sources differ from each other on the definition of "herb". For instance, the Hunt Institute for Botanical Documentation includes the condition "when persisting over more than one growing season, the parts of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medicinal Plant
Medicinal plants, also called medicinal herbs, have been discovered and used in traditional medicine practices since prehistoric times. Plants synthesize hundreds of chemical compounds for various functions, including defense and protection against insects, fungi, diseases, and herbivorous mammals. The earliest historical records of herbs are found from the Sumerian civilization, where hundreds of medicinal plants including opium are listed on clay tablets, c. 3000 BC. The Ebers Papyrus from ancient Egypt, c. 1550 BC, describes over 850 plant medicines. The Greek physician Dioscorides, who worked in the Roman army, documented over 1000 recipes for medicines using over 600 medicinal plants in ''De materia medica'', c. 60 AD; this formed the basis of pharmacopoeias for some 1500 years. Drug research sometimes makes use of ethnobotany to search for pharmacologically active substances, and this approach has yielded hundreds of useful compounds. These include the common drug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dodd, Mead And Company
Dodd, Mead and Company was one of the pioneer publishing houses of the United States, based in New York City. Under several names, the firm operated from 1839 until 1990. History Origins In 1839, Moses Woodruff Dodd (1813–1899) and John S. Taylor, at that time a leading publisher in New York, formed the company of Taylor and Dodd as a publisher of religious books. In 1840, Dodd bought out Taylor and renamed the company as M.W. Dodd. Frank Howard Dodd (1844–1916) joined his father in business in 1859 and became increasingly involved in the publishing company's operation. With the retirement of founder Moses Dodd in 1870, control passed to his son Frank Howard Dodd, who joined in partnership with his cousin Edward S. Mead (1847–1894), and the company was reorganized as Dodd and Mead. In 1876, Bleecker Van Wagenen became a member of the firm and the name was changed to Dodd, Mead and Company. Tebbel, John, ''Between Covers: The Rise and Transformation of Book Publishing in A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iowa State University
Iowa State University of Science and Technology (Iowa State University, Iowa State, or ISU) is a public land-grant research university in Ames, Iowa. Founded in 1858 as the Iowa Agricultural College and Model Farm, Iowa State became one of the nation's first designated land-grant institution when the Iowa Legislature accepted the provisions of the 1862 Morrill Act on September 11, 1862, making Iowa the first state in the nation to do so. On July 4, 1959, the college was officially renamed Iowa State University of Science and Technology. Iowa State is classified among "R1: Doctoral Universities – Very high research activity". The university is home to the Ames Laboratory, one of ten national U.S. Department of Energy Office of Science research laboratories, the Biorenewables Research Laboratory, the Plant Sciences Institute, and various other research institutes. Iowa State is the second-largest university in the State of Iowa by undergraduate enrollment. The university's ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angus & Robertson
Angus & Robertson (A&R) is a major Australian bookseller, publisher and printer. As book publishers, A&R has contributed substantially to the promotion and development of Australian literature.Alison, Jennifer (2001). "Publishers and editors: Angus & Robertson, 1888–1945". In: ''The History of the Book in Australia 1891–1945''. (Edited by Martyn Lyons & John Arnold), pp. 27–36. St Lucia: University of Queensland Press. This well known Australian brand currently exists as an online shop owned by online bookseller Booktopia. The Angus & Robertson imprint is still seen in books published by HarperCollins, a News Corporation company. Bookselling history The first bookstore was opened in 110½ Market Street, Sydney by Scotsman David Mackenzie Angus (1855-1901) in 1884; it initially sold only secondhand books. In 1886, he went into partnership with fellow Scot George Robertson. This George Robertson should not be confused with his older contemporary, George Robertson th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Measles
Measles is a highly contagious infectious disease caused by measles virus. Symptoms usually develop 10–12 days after exposure to an infected person and last 7–10 days. Initial symptoms typically include fever, often greater than , cough, runny nose, and inflamed eyes. Small white spots known as Koplik's spots may form inside the mouth two or three days after the start of symptoms. A red, flat rash which usually starts on the face and then spreads to the rest of the body typically begins three to five days after the start of symptoms. Common complications include diarrhea (in 8% of cases), middle ear infection (7%), and pneumonia (6%). These occur in part due to measles-induced immunosuppression. Less commonly seizures, blindness, or inflammation of the brain may occur. Other names include ''morbilli'', ''rubeola'', ''red measles'', and ''English measles''. Both rubella, also known as ''German measles'', and roseola are different diseases caused by unrelated viruses. Mea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
