beautiful butterfly on the eupatorium perfoliatum (boneset, boneset, agueweed, feverwort, sweating plant)

agueweed asteraceae benefit blooming blossom bones boneset botany bud butterfly cold common dune effort eupatorium perfoliatum fever feverwort field flora flower head fragrance garden gardening heal healthcare medicine herb indonesia inflorescence ingredient insects macro meadow organic midwest perennial petal pollination rural scene scenery science sweating plant white wild wildflower medical