Carex blanda

Carex blanda, the common woodland sedge or eastern woodland sedge, is a species of sedge native to a wide variety of habitats in the eastern and central United States and Canada.
Its leaves are wide and long. The stem usually has a staminate spike at the tip, two pistillate spikes closely clustered near it, as well as another pistillate spike lower down. The pistillate spikes have 4 to 36 perigynia each, which develop into seeds.
Carex blanda is rather common in its native range, and tends to spread aggressively, particularly in disturbed soils.