Wild flowers: Rudbeckia and rumex

I've talked about the wildflowers along my daily bicycle commute before. Well, right now they are putting on quite a show again. Black eyed susan (Rudbeckia fulgida I think. I'm never sure on rudbeckia species) and behind it the weed, curly dock (Rumex crispus) with a few unidentified grasses mixed in.

 I would never think of letting dock in my garden, but I have to say the brown of the dried seed heads forms an amazing back drop for the rudbeckia flowers. Once again, nature proves to have very sophisticated tastes in design.