Large-flowered trillium
- kingdom: Plantae
- phylum: Tracheophyta
- class: Liliopsida
- order: Liliales
- family: Melanthiaceae
- genus: Trillium
- species: Trillium grandiflorum
Wolfville
Nova Scotia- Hawkesbury
- Ottawa
- St. Thomas
- Vaughan
Ontario- Beloeil
- Berthierville
- Charlemagne
- Hampstead
- Hudson
- Huntingdon
- La Prairie
- Laval
- Longueuil
- Magog
- Mont-Royal
- Mont-Saint-Hilaire
- Montréal
- Neuville
- Nicolet
- Oka
- Papineauville
- Repentigny
- Rivière-Rouge
- Rougemont
- Saint-Bruno-de-Montarville
- Saint-Eustache
- Saint-Henri
- Saint-Laurent
- Sainte-Anne-de-Bellevue
- Sainte-Anne-des-Plaines
- Sainte-Julienne
- Terrebonne
Quebec
Canada
Jönköping
Jönköping- Bergshamra
- Djursholm
Stockholm- Göteborg
Västra Götaland
Sweden
LaPorte
Indiana- Colmar Manor
- Cottage City
Maryland- East Lansing
- Haslett
Michigan- Richford
Vermont- Spokane
Washington- Washington, D. C.
Washington, D.C.
United States