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Poison Ivy, Oak, or Sumac - Topic Overview
webmd.com/allergies/tc/poison-ivy-oak-or-sumac-topic-overview
"Poison ivy, poison oak, and poison sumac are plants that can cause a skin rash called allergic contact dermatitis when they touch your skin."

Outsmarting Poison Ivy and Other Poisonous Plants
fda.gov/forconsumers/consumerupdates/ucm049342.htm
"First comes the itching, then a red rash, and then blisters."

Poison Ivy: Toxicodendron radicans
fcps.edu/islandcreekes/ecology/poison_ivy.htm
"Poison Ivy is one of the best-known, and probably the most-hated, plant in Virginia. Because most people are allergic to its sap, Poison Ivy can cause a nasty rash and blisters on the skin."

Poison Ivy
hort.purdue.edu/ext/HO-218.pdf
"Although poison ivy (Rhus radicans or Toxicodendron radicans) is easily identified and should be avoided, countless people experience a painful introduction to the species."

Irritating to Humans but Good for Wildlife
mdc.mo.gov/your-property/problem-plants-and-animals/nuisance-native-plants/poison-ivy-control
"Poison ivy is a woody shrub or vine with hairy-looking aerial roots."

Plants Can Hear:
testtube.com/dnews/dnews-207-plants-can-hear-you
Glowing Plants:
testtube.com/dnews/dnews-284-kickstarter-replaces-lights-with-glowing-plants
Vines Hate You:
testtube.com/naturehates/vines

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