Carex crus-corvi

Carex crus-corvi, the raven's foot sedge or crowfoot sedge, is a species of flowering plant in the family Cyperaceae. It is native to southern Ontario in Canada, and the central and southeastern United States, and it has been introduced to Belgium. A perennial reaching 90 cm and hardy to USDA zone 4, it is an obligate wetland species found in a wide variety of such habitats.