- Herbarium ID: NHIC
- Accession Number: MJO12160
- Scientific Name: Carex echinata subsp. echinata Murray
- Family Name: Cyperaceae
- Location: Mamainse Hill (1957 ft.), E side Mamainse Lk., approx. 13.5 km E of Hwy 17, Lake Superior, Ont.
- District Located: Algoma
- Longitude/Latitude: 84.60889W / 47.02694 N
- Habitat: Woods on summit of mountain.
- Notes: Depauperate shade form (AAR).
- Collector: M.J. Oldham
- Collection Number: 20700
- Collection Date: 19-Jun-1998
- Determined by: A.A. Reznicek 2 (sub. C. interior det. M.J.O.).
- Annotation by: [no data]