Vaccinium is a genus of shrubs in the plant Family Ericaceae including the cranberry, blueberry, bilberry or whortleberry, cowberry or lingonberry, and huckleberry. The genus contains about 450 species, which are found mostly in the cooler areas of the Northern Hemisphere, although there are tropical species from as widely separated areas as Madagascar and Hawai'i. The plants prefer heath landscapes, as well as open forests.