Recognize it? I photograph it from time to time just to refresh my memory. The woods here are full of it.
Now here's something I didn't know about Toxicodendron radicans:
"It is more common now than when Europeans first arrived in North America. The development of real estate adjacent to wild, undeveloped land has engendered 'edge effects', enabling poison ivy to form vast, lush colonies in these areas. It is listed as a noxious weed in the US states of Minnesota and Michigan and in the Canadian province of Ontario." ~ Wikipedia