Centaurea tuba Sommier & Levier in Trudy Imp. S.-Peterburgsk. Bot. Sada 12: 156. 1892 Centaurea tuba Sommier & Levier in Trudy Imp. S.-Peterburgsk. Bot. Sada 12: 156. 1892Taxon for this nameCentaurea tuba Sommier & Levier in Trudy Imp. S.-Peterburgsk. Bot. Sada 12: 156. 1892