| japan | ibaraki prefecture | helwingia japonica var. japonica | varietas | 1 | 0 |
| japan | kochi prefecture | helwingia japonica var. japonica | varietas | 10 | 0 |
| japan | kumamoto prefecture | helwingia japonica var. japonica | varietas | 1 | 0 |
| japan | tochigi prefecture | helwingia japonica var. japonica | varietas | 1 | 0 |