Diapensia is a genus of flowering plants belonging to the family Ericaceae. It consists of small, evergreen shrubs that are typically found in rocky or alpine environments. These plants are characterized by their leathery leaves and small, bell-shaped flowers, which can vary in color from white to pink. The most well-known species within this genus is Diapensia lapponica, commonly referred to as Lapland diapensia. This species is native to the Arctic and subarctic regions, thriving in cold climates. Diapensia plays a role in its ecosystem by providing habitat and food for various wildlife, particularly in harsh environments.