| canada | ontario | lactuca sativa var. crispa | varietas | 0 | 1 |
| japan | chiba prefecture | lactuca sativa var. crispa | varietas | 2 | 0 |
| japan | hokkaido prefecture | lactuca sativa var. crispa | varietas | 0 | 1 |
| turkey | ankara province | lactuca sativa var. crispa | varietas | 0 | 1 |
| united states | california | lactuca sativa var. crispa | varietas | 0 | 2 |