- Herbarium ID: NHIC
- Accession Number: MJO6856
- Scientific Name: Cirsium pitcheri (Torr. ex Eaton) Torr. & A.Gray
- Family Name: Asteraceae
- Location: W side of Carroll Wood Bay, Manitoulin Island, Ont.
- District Located: Manitoulin
- Longitude/Latitude: 82.84306W / 45.80833 N
- Habitat: Small dune, with Ammophila, Elymus lanceolatus subsp. psammophilum.
- Notes: Flowering, approx. 50 plants, also with Populus balsamifera, Smilacina stellata, and Juncus balticus.
- Collector: M.J. Oldham
- Collection Number: 16339
- Collection Date: 22-Jun-1994
- Determined by: M.J. Oldham
- Annotation by: A.A. Reznicek 1995.