APPLE TREES are very varied fruit trees! There are about forty species (trees or shrubs) of which the most important, in terms of human food, is the domestic apple tree ... and more than 20,000 varieties (subspecies and cultivars) including: Chanteclerc - Reine de Reinettes - Golden - Belle de Boskoop - Reinette grise du Canada - Royal Gala - Granny Smith ...