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Poison Ivy |
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poison ivy /poi·son ivy/ (poiz´'n i´ve) Rhus radicans.
poison ivy, any of several species of climbing vine of the genus Rhus, characterized by shiny three-pointed leaves. It is common in North America and causes severe allergic contact dermatitis in many people. Localized vesicular eruption with itching and burning results and may be treated with antipruritic lotions, cool compresses, or topical corticosteroid ointment or cream. Severe cases may require corticosteroids given intramuscularly or orally. See also rhus dermatitis, urushiol. Poison Ivy Pharmacognosy A plant that is highly allergenic due to urushiol—which is also present in mango, japanese lacquer tree, cashews, as well as poison oak and poison sumac
Common urushiol-rich plants Poison ivy (Toxicodendron radicans, eastern US) poison oak (T diversilobium or Rhus diversiloba, western US), poison sumac (T vernix, southern US) Public health A popular term for any allergic reaction or dermatopathy caused by T radicans, as in ‘Bob has poison ivy’ poison a substance that, on ingestion, inhalation, absorption, application, injection or development within the body, in relatively small amounts, may cause structural damage or functional disturbance. Corrosives are poisons that destroy tissues directly. They include the mineral acids, such as nitric acid, sulfuric acid and hydrochloric acid, and the caustic alkalis, such as ammonia, sodium hydroxide (lye), sodium carbonate and sodium hypochlorite; and carbolic acid (phenol). Irritants are poisons that inflame the mucous membranes by direct action. These include copper sulfate, salts of lead, cantharidin, oxalate raphides, and many plant and insect poisons. Nerve toxins act on the nerves or affect some of the basic cell processes. This large group includes the narcotics, such as opium, heroin and cocaine, and the barbiturates, anesthetics and alcohols. Blood toxins act on the blood and deprive it of oxygen. They include carbon monoxide, carbon dioxide, hydrocyanic acid and the gases used in chemical warfare. Some blood toxins destroy the blood cells or the platelets. See also poisoning and names of individual poisons. poison bean sesbania spp., thermopsismontana. berry poison gastrolobiumparvifolium. box poison gastrolobiumparviflorum. bullock poison gastrolobiumtrilobum. poison bush thesiumnamaquense. bushman's poison acokanthera spp. poison buttercup ranunculusscleratus. camel poison erythrophleumchlorostachys. candyup poison Champion Bay poison gastrolobiumoxyloboides. clover-leaf poison goodialotifolia. cluster poison gastrolobiumbennettsianum. poison Control Center public facility set up to provide information around the clock to provide information on toxicity of substances and current information of correct first aid methods and antidotes for poisoning emergencies. crinkle-leaf poison gastrolobiumvillosum. desert poison bush gastrolobiumgrandiflorum. poison elder toxicodendronvernix. Gilbernene poison gastrolobiumrotundifolium. granite poison gastrolobiumgraniticum. heart-leaf poison bush gastrolobiumbilobum or G. grandiflorum. poison hemlock Hill River poison gastrolobiumpolystachyum. hook-point poison gastrolobiumhamulosum. horned poison gastrolobiumpolystachyum. Hutt River poison gastrolobiumpropinquum. insect poison poison ivy toxicodendronradicans. kite-leaf poison gastrolobiumlaytonii. lamb poison isotropiscuneifolia. poison leaf dichapetalumcymosum. poison lobelia lobeliapratioides. mallet poison gastrolobiumdensifolium. marlock poison gastrolobiumparviflorum. poison morning glory ipomoeamuelleri. narrow-leaf poison gastrolobiumstenophyllum. net-leaf poison gastrolobiumracemosum. poison oak toxicodendrondiversilobum, T. quercifolium. poison onion dipcadiglaucum. pea-blossom poison isotropis spp. poison peach trematomentosa. Called also peach-leaf poison bush. poison pimelea pimeleapauciflora. poison pod albizia albiziaversicolor. prickly poison gastrolobiumspinosum. rigid-leaf poison gastrolobiumrigidum. river poison gastrolobiumforrestii. river poison tree excoecariadallachyana. rock poison gastrolobiumcallistachys. Roe's poison gastrolobiumspectabile. round-leaf poison gastrolobiumpycnostachyum. runner poison gastrolobiumovalifolium. poison sage isotropisatropurpurea. sandplain poison gastrolobiummicrocarpum. scale-leaf poison gastrolobiumappressum. poison sedge schoenusasperocarpus. slender poison gastrolobiumheterophyllum. slender lamb poison isotropisjuncea. spike poison gastrolobiumglaucum. Stirling Range poison gastrolobiumvelutinum. poison suckleya poison sumac toxicodendronvernix. thick-leaf poison gastrolobiumcrassifolium. poison vetch astragalus spp., oxytropis spp. wallflower poison gastrolobiumgrandiflorum. poison walnut wodjil poison gastrolobiumfloribundum. woolly poison gastrolobiumtomentosum. York Road poison
gastrolobiumcalycinum. poison ivy 1. A plant that is highly allergenic due to urushiol, which is also found in mango, japanese lacquer tree, cashews; common urushiol-rich plants: poison ivy–Toxicodendron radicans, eastern US, poison oak–T
diversilobium or Rhus diversiloba, western US; poison sumac–T vernix, southern US. See Urushiol 2. A popular term for any allergic reaction or dermatopathy caused by T radicans Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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