silphium

There are 4 plants in this genus

Cup Plant, Rosinweed

Silphium perfoliatum

Asteraceae or Compositae

Compass Plant, Robinson's compassplant

Silphium laciniatum

Asteraceae or Compositae

Prairie Dockm, Prairie rosinweed, Lucy Braun's rosinweed

Silphium terebinthinaceum

Asteraceae or Compositae