- Herbarium ID: NHIC
- Accession Number: MJO77071
- Scientific Name: Carex subspathacea Wormsk. ex Oeder et al.
- Family Name: Cyperaceae
- Location: W side of mouth of Severn River on Hudson Bay coast, approx. 8 km N of Fort Severn, Ont.
- District Located: Kenora
- Longitude/Latitude: 87.56944W / 56.07222 N
- Habitat: Coastal mudflat.
- Notes: Abundant, co-dominant with Puccinellia phraganodes.
- Collector: M.J. Oldham & D.A. Sutherland
- Collection Number: 26535
- Collection Date: 14-Jul-2001
- Determined by: M.J. Oldham
- Annotation by: A.A. Reznicek Feb. 24.