| Category
| Description
| Spreading
|
|
Clearly identified species or populations imported for scientific aims. |
Authorized spreading only. |
|
Clearly identified species or populations endangered in the wild due to low effectives and/or small distribution area. |
Spreading recommended, but members should be priviligied in order to guarantee hybridization avoidance. |
|
Clearly identified species or populations, not endangered, and which origin is well-known. |
Spreading recommended. Hybridization avoidance should be emphasized. |
|
Clearly identified species, but which origin is uncertain. |
Normal spreading. Hybridization avoidance should be emphasized. |
|
Unkown or probably hybridized species. |
Spreading strongly not recommended. |
