Blueberries belong to the genus Vaccinium in the heath family Ericaceae . Several sections are agriculturally important, including Cyanococcus (true blueberries), Oxycoccus (cranberries), and Myrtillus (bilberries and whortleberries). Wild representatives of Oxycoccus and Myrtillus are found in both Europe and North America, while Cyanococcus is solely North American.
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Hancock et al. (1989) studied this question.
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