Osmorhiza longistylis (Longstyle Sweetroot) is a species of perennial herb in the family umbellifers. They are native to Canada and The Contiguous United States. Flowers are visited by Myolepta varipes, Physoconops sylvosus, Sphegina campanulata, and Trypoxylon clavatum. Individuals can grow to 10 dm.
EOL has data for 15 attributes, including: