Just came back from biking in the swampy areas of nearby pine/oak Southaven Park. As well as snapping a few plant shots, I also got my shoes stuck in about 6 inches of mud, kept trying to walk, kept getting stuck. As the shoes dry, here are some plant pics, all taken within 15ft. of a freshwater river. Sorry I couldn't have gotten a better shot of the orange flower, I actually had to roll up my jeans, jump in the river with my camera to get it - didn't want to get the camera uber wet so I snapped as quick as possible. Fun day . :)
2. Looks like Impatiens capensi. See... http://ctyrrell.public.iastate.edu/Mississippi/seminars/plants.pdf Please go to page 11.
1. Possibly Onoclea sensibilis. Common name Sensitive fern. See.... http://ct-botanical-society.org/ferns/onocleasens.html