| Plant tribe | Plant genus | Plant species | Part of plant | Region | Literature | Source |
| Carduoideae | Carduus | defloratus | Flowerhead | Switzerland | Merz (1994) | Breeding - Switzerland |
| nutans | Flowerhead | Switzerland | Merz (1994) | Breeding - Switzerland | ||
| Cirsium | arvense | Flowerhead | Italy | Merz (1994) | Breeding - not Switzerland | |
| erisithales | Flowerhead | Merz (1994) | Citation for foreign breed | |||
| oleraceum | Flowerhead | Merz (1994) | Citation for foreign breed | |||
| tuberosum | Flowerhead | England | Merz (1994) | Citation for foreign breed | ||
| vulgare | Flowerhead | Switzerland | Merz (1994) | Breeding - Switzerland |