PoisonIvy

=Poison Ivy = //Anacardiaceae Toxicodendron radicans// media type="file" key="Toxicodendron_radicans.wav" width="210" height="35"
 * [[image:tradicansleaf.jpg width="147" height="253" link="http://uscbiology.wikispaces.com/file/view/tradicansleaf.jpg/154181661/tradicansleaf.jpg"]] || [[image:tradicansform.jpg width="151" height="258" link="http://uscbiology.wikispaces.com/file/view/tradicansform.jpg/154181659/tradicansform.jpg"]] || [[image:photo.jpg width="198" height="258" link="http://uscbiology.wikispaces.com/file/view/photo.jpg/154181971/photo.jpg"]] ||
 * Poison Ivy leaves (3 leaflets) || Poison Ivy roots || Poison Ivy fruit ||
 * **Leaf**: Alternate; pinnately compound with 3 leaflets; range in size from 2"-3" up to 10"-12" on larger plants; shiny top with dull underside; very reddish-orange in fall - TOXIC.
 * Form**: Appears as ground ivy, climbing vines or as a bushy plant. Vines have hairy, aerial roots that cling to host trees.
 * Fruit**: Clusters of greenish berries turning white later in season - TOXIC.
 * Bark**: Dark gray, densely covered in aerial roots. TOXIC.
 * Location**: Found throughout North America. Common on roadsides.
 * Economic/Ecological Importance:**
 * 1) Severe allergen to most people resulting in need for some medical attention. Millions of dollars are spent annually on treating poison ivy-induced dermatitis (rash) and on the removal/destruction of the plants
 * 2) Sometimes planted intentionally for erosion control or for the reddish-orange leaf colors in the fall.
 * 3) Feeds wild birds and animals who eat it without ill effects. One of the favorite winter foods for white-tail deer. || [[image:white.gif width="270" height="270"]] ||

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