Fraser's marsh St. Johnswort
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Malpighiales
- family: Hypericaceae
- genus: Triadenum
- species: Triadenum fraseri
- Burnaby
- Maple Ridge
British Columbia- Fredericton
New Brunswick- Dartmouth
Nova Scotia- Charlottetown
Prince Edward Island
Canada- Middlebury
- Oxford
- Waterbury
- Wilton
Connecticut- Machias
Maine
United States