Carex rupestris

Carex rupestris, called the curly sedge and rock sedge (names it shares with other members of its genus), is a species of flowering plant in the family Cyperaceae, native to temperate and subarctic North America, Greenland, Iceland, Europe, and Asia. It prefers to grow on rocky ledges.

Subtaxa
The following subspecies are currently accepted:
 * Carex rupestris subsp. altimontana T.V.Ebel
 * Carex rupestris subsp. rupestris