Carex trisperma

Carex trisperma, the three-seeded sedge, is a species of flowering plant in the genus Carex, native to Canada, Greenland, and the northeastern United States. It is typically found in acidic bogs within forests.

Subtaxa
The following subspecies are currently accepted:
 * Carex trisperma var. billingsii O.W.Knight
 * Carex trisperma var. trisperma