Carex ericetorum, known as rare spring sedge, is a perennial species of plants in the sedge family Cyperaceae native to central Europe and western Asia growing on calcareous soils in short grassland.

Asia is the largest continent in the world by both land area and population. It covers an area of more than 44 million square kilometres, about 30% of Earth's total land area and 8% of Earth's total s