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 1–10 mm (1⁄32–13⁄32 in) wide and 14–36 cm (5.5–14.2 in) long. The stem usually has a staminate (male) spike at the tip, two pistillate (female) 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 (achenes). Carex blanda is rather common in its native range, and tends to spread aggressively, particularly in disturbed soils....read more on Wikipedia.