Widespread European weed with spiny tongue-shaped leaves and yellow flowers, naturalized in United States
English: oxtongue, bristly oxtongue, bitterweed, bugloss, Picris echioides
bitterweedEnglish
bitterweed, Picris echioides, ambrosia, bristly oxtongue, bugloss
Noun
Any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma
English: ragweed, ambrosia, bitterweed