- Herbarium ID: NHIC
- Accession Number: MJO12217
- Scientific Name: Ranunculus rhomboideus Goldie
- Family Name: Ranunculaceae
- Location: Island on S side of Regina Bay, Hwy 71 bridge, 2.5 km ESE of Sioux Narrows, Ont.
- District Located: Kenora
- Longitude/Latitude: 94.06556W / 49.40583 N
- Habitat: Open grassy prairie remnant on slope surrounded by Quercus macrocarpa.
- Notes: Rare.
- Collector: M.J. Oldham & W.D. Bakowsky
- Collection Number: 20749
- Collection Date: 22-Jun-1998
- Determined by: M.J. Oldham
- Annotation by: [no data]