- Herbarium ID: NHIC
- Accession Number: MJO9704
- Scientific Name: Carex tonsa var. tonsa (Fernald) E.P.Bicknell
- Family Name: Cyperaceae
- Location: Canadian Pacific Railway (CPR), E of Angler Creek, approx. 5 km NW of Marathon, Ont.
- District Located: not specified
- Longitude/Latitude: 86.42444W / 48.76528 N
- Habitat: Angler Settlement, open, sandy ground, common.
- Notes:
- Collector: M.J. Oldham & W.D. Bakowsky
- Collection Number: 18648
- Collection Date: 25-Jun-1996
- Determined by: M.J. Oldham
- Annotation by: A.A. Reznicek 1997.