thinleaf sedge
- kingdom: Plantae
- phylum: Tracheophyta
- class: Liliopsida
- order: Poales
- family: Cyperaceae
- genus: Carex
- species: Carex cephaloidea
- St. Thomas
Ontario
Canada- Broad Brook
- Heritage Village
- Oxford
- Plainville
- Southbury
- Watertown
Connecticut- Buckland
- Great Barrington
Massachusetts- Alma
- East Lansing
- Schoolcraft
Michigan
United States