Vaccinium Pennsylvanicum, commonly known as the Hillside blueberry or the Early low-bush blueberry, is a species of deciduous shrub belonging to the family Ericaceae. This plant species is found in the northeastern United States and eastern Canada. Synonyms for Vaccinium Pennsylvanicum include Vaccinium angustifolium, Gaylussacia baccata, and Vaccinium castaneum. These synonyms are often used interchangeably to refer to this species of blueberry bush. Vaccinium Pennsylvanicum is known for its delicate pinkish-white flowers that bloom in spring and its sweet, edible blueberries that ripen in early summer. This species is an important source of food for wildlife and is also popular among humans for its culinary uses.