| Olgaea eriocephala (C.Winkl.) Iljin trib. Cardueae | |
| Olgaea lomonossowii (Trautv.) Iljin trib. Cardueae | |
| Olgaea longifolia (C.Winkl.) Iljin trib. Cardueae | |
| Olgaea roborowskyi Iljin trib. Cardueae |
| Olgaea eriocephala (C.Winkl.) Iljin trib. Cardueae | |
| Olgaea lomonossowii (Trautv.) Iljin trib. Cardueae | |
| Olgaea longifolia (C.Winkl.) Iljin trib. Cardueae | |
| Olgaea roborowskyi Iljin trib. Cardueae |