| Plant tribe | Plant genus | Plant species | Part of plant | Region | Literature | Source |
| Carduoideae | Cirsium | acaule | Flowerhead | Switzerland | Merz (1994) | Breeding - Switzerland |
| erisithales | Flowerhead | Switzerland | Merz (1994) | Breeding - Switzerland | ||
| heterophyllum | Flowerhead | Switzerland | Merz (1994) | Breeding - Switzerland | ||
| oleraceum | Flowerhead | Switzerland | Merz (1994) | Breeding - Switzerland | ||
| palustre | Flowerhead | England | Merz (1994) | Citation for foreign breed | ||
| spinosissimum | Flowerhead | Switzerland | Merz (1994) | Breeding - Switzerland |