I was surprised to find several plants new to me at Bognor Marsh, plants which I had to look up, either to remember or to figure out. Maybe I'm getting forgetful in my old age, but I do have quite a collection of field guides from my years teaching field studies at university, so I enjoyed making use of them. Here's a report on some of the species I found; sorry, but this post is pretty long. Any botanists among my readers, please feel free to correct me!
Note, 2 days later - I'm assured that this is NOT Smooth Rose, but haven't figured out what it is; may have to just wait til next year and go back when it's in flower.