Sarracenia purpurea

The range of Sarracenia purpurea, also known as the purple pitcher plant, includes the east coast of the USA, the Great Lakes region, most of Canada, Washington state, and even Alaska. This is the most widely distributed species of Sarracenia which also includes established naturalised populations in Europe.

There are two subspecies: Sarracenia purpurea subsp. purpurea and Sarracenia purpurea subsp. venosa. The former populates colder regions with the latter confined to the southern states. Sarracenia purpurea subsp. venosa is further divided into a few different varieties: Sarracenia purpurea subsp. venosa var. venosa, Sarracenia purpurea subsp. venosa var. burkii and finally Sarracenia purpurea subsp. venosa var. montana.

Sarracenia purpurea subsp. venosa var. burkii is considered to be a species in its own right with the species name Sarracenia rosea. Read more about that here - Sarracenia rosea or Sarracenia purpurea subsp. venosa var. burkii?