What are the names of these wildflowers (see picture inside)?

I copied this picture from myWildflowers.com onto my desktop, but I don’t know the names of most of them. The red one in the middle is milkweed and I think the one on the bottom left is trout lilly, definitely a lily of some sort. I think the one on the top in the middle may be Queen Ann’s lace. I am clueless regarding the rest.

I sent a request for the names to the Web site, but never got a return. The people who run the site are from western Pennsylvania, so I am assuming the flowers grow in that region.