many-headed sedge
- kingdom: Plantae
- phylum: Tracheophyta
- class: Liliopsida
- order: Poales
- family: Cyperaceae
- genus: Carex
- species: Carex sychnocephala
- Fort Saskatchewan
Alberta- New Westminster
British Columbia- Belleville
- Fort Frances
- Guelph
- Ottawa
- Owen Sound
Ontario- Meadow Lake
Saskatchewan
Canada- Moscow
Idaho- Spirit Lake
Iowa- Great Falls
Montana
United States