Original: While some Vaccinium species, such as Vaccinium parvifolium, the Red Huckleberry, are always called huckleberries, other species may be called blueberries or huckleberries depending upon local custom.
Simplified: Some Vaccinium species, such as the Red Huckleberry, are always called huckleberries. Other species may be called blueberries or huckleberries in different locations.