- Herbarium ID: NHIC
- Accession Number: MJO75038
- Scientific Name: Carex x knieskernii Dewey (C. arctata x C. castanea)
- Family Name: Cyperaceae
- Location: Copper Hbr., central Mortimer Isl., Slate Islands Provincial Park, Lake Superior, Ont.
- District Located: not specified
- Longitude/Latitude: 87.03083W / 48.68389 N
- Habitat: Woods near rocky Lake Superior shore.
- Notes: [no data]
- Collector: M.J. Oldham & W.D. Bakowsky
- Collection Number: 25710
- Collection Date: 19-Jun-2001
- Determined by: M.J. Oldham
- Annotation by: [no data]