Vaccinium angustifolium is a deciduous shrub in the family Ericaceae, commonly known as the lowbush blueberry or wild blueberry. It is native to northeastern North America, including eastern Canada and the northeastern United States, where it grows in acidic, well-drained soils such as barrens, forests, and rocky landscapes. The genus name Vaccinium is derived from a classical Latin term used for berry-producing plants, possibly related to bacca meaning “berry,” while the species epithet angustifolium comes from Latin angustus (“narrow”) and folium (“leaf”), referring to the plant’s relatively narrow leaves compared to other species in the genus.

The plant is a low-growing, spreading shrub that forms dense colonies through underground rhizomes. It produces small, bell-shaped white to pink flowers in spring, followed by small, deep blue to purple berries in summer. These berries are typically smaller and more intensely flavored than those of cultivated highbush blueberries (Vaccinium corymbosum), with a higher skin-to-pulp ratio contributing to their robust taste. Vaccinium angustifolium is often managed through wild harvesting systems rather than conventional cultivation, particularly in regions such as Maine and the Canadian Maritimes.

The berries of Vaccinium angustifolium are widely consumed fresh, frozen, or processed into jams, juices, baked goods, and desserts. They are especially valued for their concentrated flavor and natural sweetness balanced with acidity. Historically, Indigenous peoples of North America used wild blueberries as a food source, preserving them by drying and incorporating them into pemmican and other traditional foods. Today, they remain an important commercial crop, particularly in wild blueberry industries.

Nutritionally, Vaccinium angustifolium berries are rich in vitamin C, dietary fiber, and manganese, and they contain a high concentration of polyphenolic compounds. Key bioactive compounds include anthocyanins, which are responsible for the berries’ deep blue coloration and have been studied for antioxidant and anti-inflammatory effects. Other compounds include flavonols such as quercetin, phenolic acids like chlorogenic acid, and tannins. These compounds contribute to the fruit’s antioxidant capacity and potential health benefits related to cardiovascular and cognitive function in experimental and epidemiological studies.