Centaurea alluvialis Soest (original description)
Centaurea croatica (Hayek) Soest accepted as Centaurea jacea L. (original description)
Centaurea diluvialis Soest (original description)
Centaurea gradata (Rouy) Soest accepted as Centaurea decipiens Thuill. (original description)
Centaurea hollandica Soest (original description)
Centaurea julica (Hayek) Soest accepted as Centaurea jacea subsp. julica (Hayek) Greuter (original description)
Centaurea limburgensis Soest (original description)
Centaurea lusitanica (Hayek) Soest accepted as Centaurea jacea L. (original description)
Centaurea majuscula (Rouy) Soest accepted as Centaurea jacea L. (original description)
Centaurea mosana Soest (original description)
Centaurea pseudopratensis Soest (original description)