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