| Plant tribe | Plant genus | Plant species | Part of plant | Region | Literature | Source |
| Carduoideae | Centaurea | alpestris | Flowerhead | Switzerland | Merz (1994) | Breeding - Switzerland |
| scabiosa | Flowerhead | Switzerland | Merz (1994) | Breeding - Switzerland | ||
| tenuifolia | Flowerhead | Switzerland | Merz (1994) | Breeding - Switzerland |