I was at Pine Grove Furnace today enjoying my day off.
I have found D. rotundiflora here last year. I figure there is a good chance to find S. purpurea as well.
With the wife along I do not get to explore much at all.
I found this S. purpurea in Michaux State Forest, which is were Pine Grove Furnace is, but it was actually closer to a park called Caledonia. I only knew where to find it because of a co-worker has a cabin in the area and told me about the plant and drew me a map to it. This is the first S. purpurea I have found in PA since I've started to hunt for native CP's.