I've attached the photo of the entire plant, with flowers. Chelone glabra (turtle head) is a plant of calcareous fens and marshes, but is also found in boggy woods. As the common name implies, the flower looks like a turtle's head. Leaves from this species were used to make a tea used for a variety of ailments, including worms, fevers, jaundice, and as a laxative.
To get Justin going, I'm going to point out that some authors (molecular botanists) now put this plant in the family Plantaginaceae. I'm sticking with Scrophulariaceae.