Poison Sumac in Winter

I was able to find poison sumac (on Martha’s Vineyard) in the winter, but only because I used the iNaturalist app to see if it

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Poison ivy is known for its red leaves. Here we see both red and green leaves. Which is poison ivy? Touch the photo for the

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Here are two “leaves of three”. One is poison ivy, one is not. Touch the photo for the answer. (Touch here to turn off the

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