Zone 5 - Undisturbed short-story woodland. Moisture-retentive soil with plentiful humus. Plant is growing with a southeastern exposure.

The seed body reminds me of clematis, but I'm unfamiliar with the leaf form.
Vertically climbing habit.
I haven't yet seen the bloom on this plant, (unless this is the bloom);-)

Try this: scroll down for the seed heads photo

http://ontariowildflowers.com/...

Thanks, Lee Anne.

That may very well be it. I'll take another look at the actual plant today. I should have taken more pictures of it when I was there the first time.

We have another definite winner here!!

I went back and checked to see if the leaves on this plant were opposite each other on the vine....they are!

Clematis virginiana - Virgin's Bower, it is.

Thanks again, Lee Anne!

It will be on its way to the DB momentarily!