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Leaves of three, leave them be! Close-up image of a poison ivy plant in the woods
poison ivy on the ground with warning flag
Spring Flowers
Poison Ivy, Toxicodendron radicans
Poisonous liana Toxicodendron on the background of a tree trunk, South Kuriles
 Poison Ivy (Toxicodendron radicans) is a plant common throughout North America. It contains a toxic clear liquid compound in its sap called urushiol that causes itching and skin rashes, it is to be avoided at all costs.
Poison ivy (Toxicodendron radicans) at a forest edge in Connecticut. The saying is, \
Poison Ivy plant, forest floor
Poison ivy vine and leaves growing on a tree in North Carolina backlit to show the details.
Shiny reddish green poison ivy leaves grow in a Cape Cod garden filled with lily of the valley in mid May.  As the seasons progress the leaves will turn green in the summer and bright red in Autumn.
Close up of western poison ivy, Toxicodendron rydbergii, growing along canal bank. Glen Echo, Maryland, USA.
This is poison ivy.  Dont touch.
chinese medicine plant Tetradium ruticarpum (A. Juss.) T. G. Hartley in outdoor in Spring
Young Red Poison Oak Leaf Surrounded With Mature Green Poison Oak Leafs For Plant Identification High Quality
This is a nature background of a green vine growing up a tree trunk in Great Smoky Mountains National Park along the Deep Creek area in North Carolina.
Meadow in Autumn
Poison ivy growing across the forest floor that is covered in pine needles and broken tree limbs.
Posion Ivy on a tree in the woods of Tennessee
Poison Oak bush with fresh spring growth and little flower buds near Los Angeles California.
[b]Poison Ivy (Toxicodendron radicans).[/b] Note the three glossy leaflets, with notched edges. Thus, the saying \
Selective focus on distinctive three leaves of a poison ivy plant. High quality photo
Poison ivy (Toxicodendron radicans) is a common plant native to North America.  It is well known for causing allergic reactions in humans due to its potent oil called urushiol. The poison ivy plant is a woody vine or shrub that can vary in appearance depending on its growth environment. It usually has three shiny, almond-shaped leaflets arranged in a cluster, with the middle leaflet having a longer stem than the two side leaflets. The leaves can be green during the spring and summer, turning red or orange in the fall.  This poison ivy plant was photographed by the Arizona Trail in the Coconino National Forest near Flagstaff, Arizona, USA.
Poison sumac, Rhus radicans grows as a shrub, but is also able to climb with its roots
chinese medicine plant Chimonanthus praecox (L.) Link in outdoor in Spring
Macro of two Poison Ivy leaves growing back to back on leafy forest floor
A tree trunk covered with buds
Dangerous Red Mature Poison Oak Leaf Surrounded With New Green Poison Oak Leaves Close Up For Plant Identification
Creeping fig on a large tree trunk
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