Now, the confusion! This is sarsaparilli (image 3) in spring colors. They have five leafs in a group of three. Notice they are not show shinny and again five leafs.
And now more confusion! This sarsaparilli (image 4) in fall colors. It is still sporting five leafs, and a rusty reddish color. Again, five leafs and it don't cause the rash. Actually, some earthy type drinks have been made from the root of this plant. The problem lying in the eradication of the wrong plant and still the itch appears.