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Topic: Western Poison-oak

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Western Poison-oak - Wikipedia, the free encyclopedia Western Poison-oak is found only on the Pacific Coast, where it is common, and ranges from Southern Canada to the Baja California peninsula. Western Poison-oak leaves and twigs have a surface oil that is an irritant. Western Poison-oak or Pacific Poison-oak (Toxicodendron diversilobum or Rhus diversiloba) is found only on the Pacific Coast of the United States and of Canada. en.wikipedia.org /wiki/Western_Poison-oak   (474 words)

Facts on Poison Ivy, Poison Oak and Poison Sumac The Toxicodendrons: Poison Ivy, Poison Oak and Poison Sumac, The poisonous sap containing urushiol is found in the roots, stems, leaves and fruit of poison ivy, poison oak, and poison sumac. Poison ivy, poison oak, and poison sumac belong to the cashew family, Anacardiaceae. www.griffin.peachnet.edu /ga/cobb/Horticulture/Factsheets/PoisonIvy/pivy.htm   (1053 words)

Toxicodendron - Wikipedia, the free encyclopedia Poison-oak is not an oak (Quercus, family Fagaceae) at all, although leaves in some plants bear a resemblance to oak leaves; nor is poison-ivy an ivy (Hedera, family Araliaceae) despite the superficially similar growth form. Western Poison-ivy (Toxicodendron rydbergii or Rhus rydbergii) is found in northern parts of the eastern United States. Poison Sumac (Toxicodendron vernix or Rhus vernix) grows exclusively in very wet or flooded soils, in swamps and peat bogs in parts of eastern North America, especially in the coastal plains and the Great Lakes region. en.wikipedia.org /wiki/Poison_oak   (1034 words)

Poison Oak - 12/1995 Poison oak may be a low deciduous shrub, but if a means of support is available, it will grow as a vine. Poison ivy and poison oak are the most common cause of contact dermatitis in North America. Poison oak is just one member of a group of plants formerly included in the genus Rhus, but now classified as Toxicodendron. www.friendsofedgewood.org /newsletters/1995/9512/poison.htm   (725 words)

Electronic Textbook of Dermatology---Botanical Dermatology References Poison ivy, poison oak, and poison sumac are now classified in the genus Toxicodendron which is readily distinguished from Rhus. A black, enamel-like deposit is frequently present on injured areas of poison ivy, poison oak, and poison sumac. One hour before both forearms were patch tested with urushiol, the allergenic resin from poison ivy and poison oak, 5% quaternium-18 bentonite lotion was applied on one forearm. www.telemedicine.org /botanica/botrefs2.htm   (2401 words)

CPCS: Poison Oak Western poison oak, in the form of a bushy shrub or a climbing vine, can be found from Western Canada to Mexico. Severity of poison oak skin reaction depends on the degree of patient sensitivity, the amount of exposure, and on which body parts are exposed. Poison oak branches left on a garage roof for 18 months were found to be toxic. www.calpoison.org /public/poak.html   (928 words)

Dermatology Consultants Western poison oak grows wherever there is enough water, and eastern poison oak prefers sandy soil but sometimes grows near lakes. Poison oak grows in the Western United States, Canada, and Mexico (western poison oak), and in the southeastern states (eastern poison oaks). Poison oak, with its oak-like leaves, is a low shrub in the east and can be a low or high shrub in the west. www.dermconsultants.com /poisonivy.html   (1474 words)

Poison Ivy, Oak, and Sumac - Frequently Asked Questions - (www.poisonivy.us) Poison ivy, western poison oak, and poison sumac have the poisonous sap (urushiol) in their roots, stems, leaves and fruit. Poison ivy, poison oak, and poison sumac belong to the cashew family, Anacardiaceae. Poison ivy is a harmful vine or shrub in the cashew family. poisonivy.aesir.com /faq.html   (1263 words)

Stories Poison Ivy Safety Poison ivy, poison oak and poison sumac all have an oil called urushiol in their sap that causes people to break out in an itchy, painful rash when they brush up the plant and get the sap on their skin.” Eastern poison oak grows from New Jersey to Florida and as far west as Texas and Kansas. “Thirdly, poison ivy, poison oak and poison sumac provide ground cover and their root systems help prevent erosion. www.woodalls.com /kidscamp/stories/poisonivy.html   (907 words)

Poison Oak Management Guidelines--UC IPM Poison oak or western poison oak, Toxicodendron diversilobum, is native to western North America, with a distribution extending from British Columbia south to the Baja California peninsula. In Washington and Oregon, poison oak is found mainly in the western regions of the states. Poison oak is a deciduous (loses leaves in winter), woody plant that can have a shrub or vine form. www.ipm.ucdavis.edu /PMG/PESTNOTES/pn7431.html   (2483 words)

Poison Plant Guide Poison Oak (Rhus diversiloba), Poison Ivy (Rhus toxicodendron L.), and Poison Sumac (Rhus toxicodendron V.) emit the poisonous, oily irritant urushiol (oo-ròo-she-all) on the plant's stem, roots, branches, and leaves. Poison oak, ivy, sumac, and other members of the Rhus family grow in all portions of the North American continent (except Nevada, Alaska, and Hawaii) at elevations below 4,000 feet with a rainfall above 8 inches per year. Removal of the poison oil from your pet with a thorough, effective cleanser will help avoid contaminating you and your family with an unwanted and unsuspected rash. www.unec.net /of_interest/POISON_PLANTS/poison_plant_guide.htm   (894 words)

poison oak Western Poison Oak is found throughout California, while Eastern Poison Oak is found in the southern and eastern United States. Poison Oak is found throughout California, at elevations below 4,000 feet, as both a free-standing shrub, 12" to 30" high, and as a vine trailing around tree trunks. Warm water only opens your pores, allowing the Poison Oak oil to enter and increase the area of exposure. www.southernsierrabsa.org /adventure/poison_oak.html   (833 words)

Poison Oak and Poison Ivy Rhus diversiloba T. & G and Rhus radicans L., PNW 108 Poison ivy and poison oak vines climbing on trees should be cut at the base, and as much of the vine as possible should be pulled away from the tree. Poison oak and poison ivy can be effectively controlled by treating the lower stems with herbicides registered for such a method in the winter when the plants are leafless and dormant. Poisonous oils may be transferred from animals grazing in or moving through poison ivy or poison oak to people who handle those animals. eesc.orst.edu /agcomwebfile/edmat/html/pnw/pnw108/pnw108.html   (1889 words)

POISON OAK Western poison oak grows along the Pacific Coast from New Mexico to Canada. Poison oak (Rhus diversiloba), is a common perennial that grows as a dense leafy shrub in the open or in filtered sun. Poison ivy has three leaflets with pointed tips; the stalks of the leaves do not grow from the same point on the stem; the stem is woody, and the plant may have creamy yellow-green flowers or clustered waxy berries that are green to yellow. www.wildfirenews.com /fire/articles/oak.html   (2670 words)

Poison Oak Because the two species of western poison oak often exhibit a viny growth form, they are listed as subspecies of eastern poison ivy by some authors. But there is a positive side to all of this--research on poison oak may lead to a better understanding of the human immune system and the treatment of renegade viruses and tumor cells. Much to the chagrin of unwary gardeners, both poison oak and poison ivy were planted in English gardens for their graceful climbing habit and beautiful autumnal coloration. waynesword.palomar.edu /ww0802.htm   (4779 words)

Electronic Textbook of Dermatology--Botanical Dermatology , Allergic Contact Dermatitis Poison oak and poison ivy are weeds that grow along roads, trails, or streams; they possess three leaflets (sometimes five) per leaf (compound leaves). Poison ivy and poison oak plants are difficult to eradicate once they have developed root growth, which requires only one year. Interestingly, the diolefin (containing two double bonds) is the major component in poison ivy and poison oak urushiol, and the unsaturated version is a minor component. www.telemedicine.org /botanica/bot6.htm   (7569 words)

Poison Ivy, Poison Oak, Poison Sumac - Somerville, New Jersey NJ "Poison Ivy, Western Poison Oak, Poison Sumac." Publication No.1699, Agriculture and Agri-Food Canada. Poison ivy, poison oak, and poison sumac are plants that cause a rash in those allergic to them. Diagnosis of poison ivy, oak, or sumac is based on the presence of a characteristic itchy rash, and possible exposure to plants containing urushiol oil. www.somersetmedicalcenter.com /1661.cfm   (712 words)

Toxicodendron Diversilobum (Western Poison Oak) Western poison oak grows along the Pacific Coast from New Mexico to Canada, in low places, thickets and wooded slopes. Poison oak has blunt-tipped leaflets, hairy on both sides, that cluster in three leaflets per leaf stem. The plant commonly appears as either an unsupported, erect bush or a vine, and the center leaf of the cluster resembles an oak leaf. www.michaelsilveus.com /Herbs/ToxicodendronDiversilobum.html   (406 words)

ISU Extension News Release Firefighters in California and other Western states are especially wary of Western poison oak because smoke from burning plants is extremely toxic, capable of causing lung infections and a burning, itching rash all over the skin of anyone unlucky enough to be downwind. Eastern poison oak (Toxicodendron toxicarium), found growing in sandy soils from southern New Jersey to Florida and west into Texas, Oklahoma and Kansas, has multi-lobed leaflets (three leaflets per leaf) and looks much more like oak than the Western poison oak (Toxicodendron diversilobum) whose leaflets appear wrinkled with a scalloped leaf margin. Poison sumac (Toxicodendron vernix) is the species we are least likely to encounter because it is a water-loving swamp plant of the Northeast, Midwest and Southeast. www.extension.iastate.edu /newsrel/2000/jun00/jun0007.html   (1137 words)

Sunset: How to avoid an itchy summer - avoiding poison oak As any poison oak sufferer knows, what is especially maddening is that the rash seems to spread far beyond the part of the body exposed to the plant. Poison oak is probably the West's most common outdoor hazard. Recognizing poison oak can be difficult because the plant can take a number of forms: freestanding shrub, vine, ground cover. www.findarticles.com /p/articles/mi_m1216/is_n1_v195/ai_17312100   (1137 words)

The Ultimate EMS Resource It is estimated that more than 50 percent of workmen’s compensation cases in California are due to contact dermatitis resulting from contact with western poison oak plants. Poison sumac is a water-loving plant and is usually found in swamps and peat bogs. Members of the poison ivy family (Anacardiacae) are common throughout the United States and parts of Canada. www.merginet.com /index.cfm?searched=clinical/environ/PoisonIvy.cfm   (1763 words)

Poison Ivy, Oak, & Sumac - Fast Facts - (www.poisonivy.us) Western Poison Oak discovered by David Douglas (1799-1834) on Vancouver Island. Poison sumac has 7 to 13 leaves on a branch, although poison ivy and oak have 3 leaves per cluster. Look no further than the Poison oak and ivy translation project for your answer. poisonivy.aesir.com /view/fastfacts.html   (476 words)

Canadian Poisonous Plants Information System Poison sumac (Rhus vernix; synonymy Toxicodendron vernix) is a native shrub or vine found in southern Quebec and southern Ontario. Urushiol, an group of alkylcatechols, is found in the sap of poison sumac. Most parts of poison sumac contain the allergen except the pollen, anthers, xylem, and epidermis. www.cbif.gc.ca /pls/pp/ppack.info?p_psn=88&p_type=all&p_sci=comm&p_x=px   (307 words)

AllRefer - Species: Poison-Oak Toxicodendron diversilobum > Species: Poison-oak and western poison-ivy (Toxicodendron rydbergii) hybridize in the Columbia River Gorge area [38]. Poison-oak is relatively high in phosphorus, sulfur, and calcium as compared to other browse species [24]. Urushiol is the poison present in the oil [46]. reference.allrefer.com /wildlife-plants-animals/plants/shrub/toxdiv/all.html   (3186 words)

eNature.com Nature Guides Western Poison Oak is not a true oak, but a close relative of Poison Ivy (Toxicodendron radicans). Poison Oak is so widespread and common in California that it almost qualifies as the state shrub. Poison Ivy replaces Poison Oak east of the Pacific Coast region. www.enature.com /flashcard/show_flash_card.asp?recordNumber=TS0441   (230 words)

Poison Ivy, Oak & Sumac The male and female flowers of poison sumac are on separate plants, as in poison ivy and western poison oak. However, leaflets of western poison oak have rounded tips, whereas leaflets of poison ivy have tips that are pointed. Poison oak is similar to poison ivy in appearance. users.ev1.net /~siobhan1/pivy.html   (1073 words)

poisonivy.htm The leaf shape and growth habits of poison-ivy and poison-oak plants vary greatly throughout the U.S. Their common features are their poisonous nature and their compound leaves, which consist of three leaflets. It is distributed from southern Canada to western Guatemala, the eastern third of the U.S. and throughout Mexico, on Bermuda, in the western Bahamas, Japan, western and central China and Taiwan, the Kurile Islands, and Sakhalin of Russia (11). The Ramah Navahoes made an arrow poison from poison-ivy sap mixed with deer's blood and charcoal from a lightning-struck tree, the latter probably a black magic connection. www.wssa.net /photo&info/larrymitich_info/poisonivy.htm   (2391 words)

Poison Ivy, Poison Oak and Poison Sumac Poison Oak is divided into the Eastern and Western varieties. Growing from 6 to 20 feet in height, the Poison Sumac is found in the east from Quebec to Florida and westward along the coast to far east Texas between Shelby and Hardin counties. Like many of the look-alikes, Poison Sumac has tiny sweet smelling flowers in the spring and is brightly covered with lovely red and yellow leaves in the fall, but remember, only Poison Sumac has cream colored berries. nac.tamu.edu /x075bb/caddo/frameidx.html   (2475 words)

Poison Ivy Information Cause: Poison Ivy and Western Poison Oak have the poisonous sap called "urushiol" in their fruits, leaves, stems and roots. Healing: Poison Ivy and Poison Oak reaction generally takes a course of two weeks regardless of how it is treated. However, after the sap has come into contact with your skin, it is important to wash the area several times and avoid touching other parts of the body as the oil from the sap can cause irritation. www.essentialsheabutter.com /poison_ivy_information   (274 words)

Poison Ivy Immunology An excellent series of photos in different seasons is at the Poison Ivy, Western Poison Oak, Poison Sumac site by Gerald A. Mulligan of Agriculture and Agri-Food Canada. Poison ivy, sumac, and oak by the American Academy of Dermatology. Poison ivy leaves are coated with a mixture of chemicals called urushiol. www.bio.umass.edu /immunology/poisoniv.htm   (1195 words)

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