Today, May 26, 2014, is National Blueberry Cheesecake Day. Blueberries are perennial flowering plants with indigo-colored berries from the section Cyanococcus within the genus Vaccinium. Species in the section Cyanococcus are the most common fruits sold as "blueberries" and are native to North America. Commercially cultivated highbush blueberries were not introduced into Europe until the 1930s.