Valeriana dioica (Marsh Valerian) is a species of perennial herb in the family Caprifoliaceae. They are native to The Contiguous United States and Canada. They have achenes. Flowers are visited by green-veined white, Syrphus vitripennis, Pollenia amentaria, and Old World Swallowtail.
EOL has data for 15 attributes, including: