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May 10, 2010
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Southeastern, New Hampshire
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Western Poison Ivy is a deciduous, upright shrub with brown-to-gray woody stems. The leaves alternate up the stem.
Each leaf stalk (petiole) has three leaflets. You can see that the stalk of the central leaflet
is much longer than the stalks of the side leaflets. This is a common feature of poison ivy. The leaf
edges can be slightly lobed or smooth (entire). It seems that there is often (but not always) a slight redish
tinge to some of the leaves. There will be a group of small yellowish flowers and in the Winter, ivory-colored
fruit. A detail description can be found at:
http://www.fs.fed.us/global/iitf/pdf/shrubs/Toxicodendron%20rydbergii.pdf.
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