- Herbarium ID: NHIC
- Accession Number: MJO55636
- Scientific Name: Sisymbrium loeselii L.
- Family Name: Brassicaceae
- Location: 1 km S of Hwy 588, near S end of Dodds Pond on road to Arrow Lake Provincial Park, Ont.
- District Located: not specified
- Longitude/Latitude: 90.25083W / 48.19222 N
- Habitat: Gravel roadside through woods.
- Notes: Early flowering; roadside patch of approx. 10 plants.
- Collector: M.J. Oldham
- Collection Number: 21723
- Collection Date: 10-Jun-1999
- Determined by: M.J. Oldham
- Annotation by: A.A. Reznicek March 24.