In The Garden: Plant ID Help

There are 3 items I need help with, a tropical flower, a vine on a tree, and common flower and or weed.

 

3 might be Virginia creeper, Parthenocissus quinquefolia.

 

1 - Passiflora coccinea

 

2. Brassicaceae, perhaps Cardamine?

 

This is a funny plant. Recently I walked through the thicket of Cardamine growing along a small creek and got under the artillery fire. Each of the ripe pods was exploding from a slight touch and throwing the seeds several meters around. Here are the details:
http://www.flickr.com/photos/zharkikh/7865447966/

 

Thanks - those photos are really interesting.