?Centaurea nigra subsp. aterrima
Synonymy
Source: Greuter, W. (2006+): Compositae (pro parte majore). – In: Greuter, W. & Raab-Straube, E. von (ed.): Compositae. Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
Centaurea nigra subsp. aterrima in Verh. K. K. Zool.-Bot. Ges. Wien 68: 213. 1918