Cassiope tetragona, commonly known as the Arctic bell heather, is a low-growing evergreen shrub found in the Arctic and subarctic regions. It typically grows in rocky, well-drained soils and can thrive in harsh climates. The plant features small, bell-shaped white flowers that bloom in summer, attracting various pollinators. This species is part of the family Ericaceae, which includes other heathers and blueberries. Cassiope tetragona plays a crucial role in its ecosystem, providing habitat and food for wildlife. Its resilience to cold temperatures makes it an important plant for studying climate adaptation in polar environments.