I need help identifying these plants please!! pics provided!!?

Question

I live in MN twin cities area... these pictures were taken by the Mississippi river hope this helps..

plant #1

http://img.photobucket.com/albums/v444/eastcoastbabe/mysteryplant00013.jpg

http://img.photobucket.com/albums/v444/eastcoastbabe/mysteryplant00001.jpg

http://img.photobucket.com/albums/v444/eastcoastbabe/mysteryplant00003.jpg

http://img.photobucket.com/albums/v444/eastcoastbabe/mysteryplant00004.jpg

http://img.photobucket.com/albums/v444/eastcoastbabe/mysteryplant00012.jpg

plant #2

http://img.photobucket.com/albums/v444/eastcoastbabe/mysteryplant00026.jpg

http://img.photobucket.com/albums/v444/eastcoastbabe/mysteryplant00027.jpg

http://img.photobucket.com/albums/v444/eastcoastbabe/mysteryplant00028.jpg

plant #3

http://img.photobucket.com/albums/v444/eastcoastbabe/mysteryplant00042.jpg

http://img.photobucket.com/albums/v444/eastcoastbabe/mysteryplant00047.jpg

http://img.photobucket.com/albums/v444/eastcoastbabe/mysteryplant00048.jpg

Answer 1

Plant #1 looks like a type of elderberry (Sambucus) to me.  Any local key to shrubs should be able to help you find the species.

Plant #2 could be a lot of things.  Sorry.

Plant #3 looks like a member of the buckeye genus (Aesculus).  It may be horsechestnut, which is not native.  Unfortunately, I don't have a guide to your area.

Answer 2

The first one is elderflower.

I am not sure what the second one is.

The last one looks like either a baby chestnut tree, or a sumac.