Polymnia canadensis, commonly known as whiteflower leafcup, is a flowering perennial plant in the family Asteraceae. It is native to eastern North America from Ontario south to Alabama and from Kansas, Oklahoma, and Minnesota east to North Carolina, Vermont and Connecticut.[3] It is considered endangered in the last two states.[4] It is typically found in moist forests over calcareous rocks.[5]
^illustration from Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Charles Scribner's Sons, New York. Vol. 3: 458.
^The Plant List, Polymnia canadensis L.
^Biota of North America Program 2014 county distribution map
^"Plants Profile Polymnia canadensis L. whiteflower leafcup". United States Department of Agriculture Natural Resources Conservation Service. Retrieved 17 August 2011.
^Alan Weakley (2015). "Flora of the Southern and Mid-Atlantic States".
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