Article 4
1. The material shall have adequate identity and purity relative to the genus or species in question, or where appropriate, group of plants, and, where marketed or intended to be marketed with a reference to the variety pursuant to Article 9 (1) of Directive 91/682/EEC, shall also have identity and purity as to variety. 2. In the case of commonly known varieties referred to in the first indent of Article 9 (2) of Directive 91/682/EEC the official denomination of the variety shall be used by the supplier. 3. In the case of varieties which are already the subject of an application for plant breeders' rights or an official registration referred to in the first indent of Article 9 (2) of Directive 91/682/EEC, the breeders' reference or proposed name must be used until the authorization is granted. 4. In the case of varieties entered on lists kept by suppliers pursuant to the second indent of Article 9 (2) of Directive 91/682/EEC, the requirement referred to in paragraph 1 in respect of variety shall be based on the detailed descriptions given in the lists kept by suppliers.