Vaccinium Vitis-idaea

Vaccinium vitis-idaea (lingonberry or cowberry) is a short evergreen shrub in the heath family that bears edible sour, slightly sweet, slightly bitter fruit, native to boreal forest and Arctic tundra throughout the Northern Hemisphere from Eurasia to North America. In the past it was seldom cultivated, but fruit was commonly collected in the wild. Recently, commercial cultivation has begun in the U.S. Pacific Northwest.