The famous rootstock vine is an interspecific new variety between American wild vines of the species Vitis berlandieri x Vitis riparia; it is an all-female variety. Synonyms are 5 BB, 5 BB Selection Kober, Berlandieri x Riparia Kober 5 BB, C-25, Craciunel 25, Kober, Kobera 5 BB, Kobravka, Selektsii Kobera, Teleki 5 BB and Teleki Kober 5 BB. It is one of the first phylloxera-resistant rootstocks that gained worldwide importance and is still used today in countless countries in the form of various clones. The development of this vine is a vivid example of how long and laborious the new vine breeding is and how carefully and precisely one must proceed. All breeding processes must be meticulously documented.