Scorzonera rigida DC., Prodr. 7: 123. 1838 Scorzonera rigida DC., Prodr. 7: 123. 1838is basionym for Gelasia rigida (DC.) Zaika, Sukhor. & N. Kilian in PhytoKeys 137: 58. 2020Taxon for this nameScorzonera rigida DC., Prodr. 7: 123. 1838