Lilium philadelphicum

Lilium philadelphicum, also known as the wood lily, Philadelphia lily, prairie lily or western red lily, is a perennial species of lily native to North America. It is widely distributed in much of Canada from British Columbia to Quebec, and parts of the United States (Northeast and Great Lakes regions plus the Rocky and Appalachian Mountains).

This lily grows to a height of approximately 30 to 90 centimeters, and produces red or orange blooms between June and August.
A variant of the species, the western red lily (L. philadelphicum andinum) was designated Saskatchewan's floral emblem in 1941.It is featured on the flag of Saskatchewan.

The wood lily is listed as endangered in Maryland, New Mexico, Tennessee and North Carolina. Its status is "threatened" in Kentucky and Ohio. In Saskatchewan, the flower is protected under the Provincial Emblems and Honours Act, meaning it cannot be picked, uprooted or destroyed in any way.