- Herbarium ID: NHIC
- Accession Number: MJO12203
- Scientific Name: Glyceria grandis S.Watson ex A.Gray
- Family Name: Poaceae
- Location: Approx. 6 km W of Seine River bridge at Hwy 11 and 4 km ENE of Seine River Village, Ont.
- District Located: not specified
- Longitude/Latitude: 92.37583W / 48.73889 N
- Habitat: Roadside ditch adjacent to seepage bank with prairie affinities.
- Notes:
- Collector: M.J. Oldham & W.D. Bakowsky
- Collection Number: 20736
- Collection Date: 21-Jun-1998
- Determined by: M.J. Oldham
- Annotation by: [no data]