Carex capitata is a species of sedge known by the common name capitate sedge. It has a circumboreal distribution, growing in wet places in boreal forests and mountain meadows in alpine climates.
This sedge is a loosely or densely clumping plant growing 10 to 35 centimeters tall. The leaves are quill-like, narrow and rolled tightly. The inflorescence is generally not more than a centimeter long and has several male and female flowers. It reproduces by seed and vegetatively by rhizomes.
Jepson Manual ...