This identifier provides two independent, simple, convenient and accurate (text-digital and digital) ampelographic methods for determining 400 grape varieties. Among them - 114 Western European, 71 Central Asian, 65 Transcaucasian, 59 North Caucasian, Don and Dagestan, 18 Moldavian, 14 Crimean, 23 varieties of Soviet breeders and 36 other varieties. The determinant is based on a new polytomic principle of diagnosis.