Comma -Eupatorium cannabinum- Last update: 11 November 2020OBSERVATION:2019-VIII-16 A Comma (Polygonia c-album) drinking nectar on Hemp agrimony (Eupatorium cannabinum). Comma (Polygonia c-album) on Hemp agrimony (Eupatorium cannabinum) Comma (Polygonia c-album) on Hemp agrimony (Eupatorium cannabinum)