Cup Plant
Cup Plant is one of the tallest plants of the prairie. The flowering stem grows blooms with one or several yellow composite sunflower-like flowers. Leaves are large, broad, and have a rough texture.
Leaves hug the stem in such a way that they create a space where water can collect like in a cup, giving the plant its common name. Often it supplies water to various insects or birds.
It's one of the four plants sometimes grouped as resin weeds (or, rosinweeds): Compass Plant, Cup Plant, Prairie Dock, and Rosinweed.
Scientific Name: Silphium perfoliatum