Synonyms for Rosebay Willowherb (same or very similar meaning)
WordNet sense 1 (tall North American perennial with creeping rootstocks and narrow leaves and spikes of pinkish-purple flowers occurring in great abundance in burned-over areas or recent clearings; an important honey plant):
fireweed, wickup, Epilobium angustifolium, giant willowherbFrom the ODE community, based on WordNetadd/edit