DistributionRead full entry
Cypripedium arietinum is found from northeastern North America and the Great Lakes region, west to Manitoba and Saskatchewan. The species occurs specifically in USA [Connecticut (SH), Maine (S1), Massachusetts (S1), Michigan (S3), Minnesota (S2), New Hampshire (S1), New York (S2), Vermont (S2), Wisconsin (S2)] and Canada [Manitoba (S2S3), Nova Scotia (S1), Ontario (S3), Quebec (S3), Saskatchewan (S1)].
The extent of occurrence (EOO) is estimated at 1,180,348 km ² and the area of occupancy (AOO) is estimated at 368 km ².
The species can be found from sea level up to 1,000 m altitude.
Sources: Blaney and Mazerolle 2007, Brackley 1985, Brzeskiewicz 2000, Case 1987, Cribb 1997, Frosch and Cribb 2012, Kartesz 1994, and Penskar and Higman 1999.