East Lansing, Michigan plant identification

Can someone help me identify these plants found in a forest in East Lansing, Michigan? All of the photos are taken in October, and all of the plants are found in the understory of the forest. Thank you.

 

#3 is a hickory seedling.

 

# 4 could be Polygonatum

 

#5 is likely Menispermum canadense (is this riverside forest?). #2 looks like an ash.

 

First one could be Virginia creeper.

 

#4 might be Smilax

 

Yes, it is a riverside forest. Thank you!

 

Great, that makes me more confident about the Menispermum identification then. I'll throw out an alternative for number one as well: an American elm seedling. I spent a summer doing a riverside forest plant inventory, and I vaguely recall that American elm seedlings bear a juvenile foliage like this. Here's a somewhat close example: File:Ulmus americana seedlings.jpg - Wikimedia Commons

 

Julie, a possible for your #5 is Liriodendron tulipifera. The leaves should turn a bright yellow soon if that's the case, and there would likely be a mature specimen in the immediate area.