An amazing wetland plant is skunk cabbage. It attracts its pollinators by producing a scent of rotting meat. I have not personally experienced this aroma even though I have spent several years photographing the beauty of the plant coming up through the early spring bog.
This plant creates its own heat source as it comes up through the ground, even as the snow lies on the frozen earth, allowing it to become one of the first bloomers of the year.
But the true wonder of this plant, for me, is the beauty of its swirls in red and green reflecting in the bog water. And the treasure it keeps hidden in its center.