Term for a cross or new breeding between two grape varieties of different species. These are combinations between the European species Vitis vinifera (there is only one) and an American or an Asian species (there are 30 of each). But also crosses between two different American (e.g. Vitis labrusca x Vitis rupestris) or Asian (for example Vitis amurensis x Vitis coignetiae) or between American and Asian species (for example Vitis amurensis x Vitis riparia) are interspecific crosses (inter = between). As a rule, only interspecific crossing products are called hybrids in common usage.
For me, Lexicon from wein.plus is the most comprehensive and best source of information about wine currently available.
Egon Mark
Diplom-Sommelier, Weinakademiker und Weinberater, Volders (Österreich)