- Herbarium ID: SSMF
- Accession Number: 010675
- Scientific Name: Carex subspathacea Wormsk. ex Oeder et al.
- Family Name: Cyperaceae
- Location: About 15 km SE of the Shagamu River mouth, SW coast of Hudson Bay, Ontario.
- District Located: Kenora
- Longitude/Latitude: 85.73888W / 55.73888 N
- Habitat: Site 78-54 (9). 0.25 km from high tide line, a brackish marsh dominated by Carex subspathacea, Carex glareosa, and Puccinellia spp.
- Notes: [no data]
- Collector: R.A. Sims
- Collection Number: 2237
- Collection Date: 07/28/1978
- Determined by: R.A. Sims
- Annotation by: [no data]