Silphium terebinthinaceum var. lucy-brauniae Steyermark
Silphium terebinthinaceum var. lucy-brauniae Steyermark is a synonym sensu FNA Ed. Comm., 2006c of:
Silphium terebinthinaceum Jacquin var. terebinthinaceum, an accepted variety name sensu FNA Ed. Comm., 2006c.