Prepared by Jennifer L. D’Appollonio, Assistant Scientist, University of Maine, Orono, ME 04469. Updated April 2019. Scientific name: Chamerion angustifolium (L.) Holub; old Epilobium angustifolium L. Common name(s): fireweed, narrow-leaved fireweed, willow herb, great willow-herb, rosebay willowherb Links: USDA PLANTS Profile , NPIN Profile, Go Botany Images: (to see enlargements [PC]: click on image, then right