| Plant tribe | Plant genus | Plant species | Part of plant | Region | Literature | Source |
| Carduoideae | Centaurea | alba | Flowerhead | Italy | Merz (1994) | Breeding - not Switzerland |
| splendens | Flowerhead | Merz (1994) | Citation for foreign breed | |||
| Flowerhead | Merz (1994) | Doubtful or uncertain citation | ||||
| stoebe | Flowerhead | Switzerland | Merz (1994) | Breeding - Switzerland | ||
| vallesiaca | Flowerhead | Switzerland | Merz (1994) | Breeding - Switzerland |