- Herbarium ID: NHIC
- Accession Number: MJO18911
- Scientific Name: Cirsium pitcheri (Torr. ex Eaton) Torr. & A.Gray
- Family Name: Asteraceae
- Location: Dominion Bay, S shore of Manitoulin Island, Ont.
- District Located: Manitoulin
- Longitude/Latitude: 82.41556W / 45.70667 N
- Habitat: Sand dunes.
- Notes: Uncommon, approx. 15 fertile & 30 vegetative plants seen; some apparently suitable habitat not checked, therefore maybe more common.
- Collector: M.J. Oldham & Mireille Delisle-Oldham
- Collection Number: 9585
- Collection Date: 7-Jul-1989
- Determined by: M. J. Oldham
- Annotation by: [no data]