Thaspium barbinode var. chapmanii J.M. Coulter & Rose, nom. illeg.

Thaspium barbinode var. chapmanii J.M. Coulter & Rose, nom. illeg. is a synonym sensu FNA Ed. Comm., 2024 of:

Thaspium chapmanii (J.M. Coulter & Rose) Small, an accepted species name sensu FNA Ed. Comm., 2024.