Synonyms for Bugloss (same or very similar meaning)
WordNet sense 1 (perennial or biennial herb cultivated for its delicate usually blue flowers):
alkanet, Anchusa officinalisWordNet sense 2 (widespread European weed with spiny tongue-shaped leaves and yellow flowers; naturalized in United States):
bitterweed, oxtongue, bristly oxtongue, Picris echioidesFrom the ODE community, based on WordNetadd/edit