Parnassia palustris (Bog Star) is a species of perennial herb in the family Celastraceae. They have a self-supporting growth form. They are native to Alaska, North America, The Contiguous United States, and Canada. They have simple, broad leaves and white flowers. Flowers are visited by Dolichopus, Rhamphomyia, Phyllolabis macroura, and Delia piliventris. Individuals can grow to 2.2 feet.
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