The irritant principle, urushiol, is present in almost all parts of the plant. Direct or indirect contact (clothing, tools, or animals that have touched the plant, or smoke from burning the plants) sets off a skin eruption that may vary from simple itching inflammation to watery blisters, depending upon the sensitivity of the individual. The eruption appears within a day to two weeks depending upon sensitivity. It begins on the portion of the body that has come in contact with the plant, usually the hands, which then can spread it to the face and other areas. Washing contaminated skin as soon as possible after contact can reduce the severity of symptoms. These plants are classified in the division Magnoliophyta, class Magnoliopsida, order Sapindales, family Anacardiaceae.
Licensed from Columbia University Press
Licensed from Columbia University Press
Licensed from Columbia University Press
Licensed from Columbia University Press
See biographies by E. Sprigge (1973) and H. Spurling (1985); studies by C. Burkhart (1965) and R. Liddell (1975).
Licensed from Columbia University Press
Licensed from Columbia University Press
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Poison ivy (Toxicodendron radicans)
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English ivy (Hedera helix).
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(born June 5, 1884, Pinner, Middlesex, Eng.—died Aug. 27, 1969, London) British novelist. She graduated from the University of London and published her first novel, Dolores, in 1911. Her second, Pastors and Masters (1925), introduced the style—employing clipped, precise dialogue to reveal her characters and advance the plot—that made her name. Her novels often dealt with struggles for power: Men and Wives (1931) featured a tyrannical mother, A House and Its Head (1935) a tyrannical father. She was created Dame of the British Empire in 1967.
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