bitterweed

Meanings

Plural: bitterweeds

Noun

• widespread European weed with spiny tongue-shaped leaves and yellow flowers; naturalized in United States
• any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma
• Any plant in the genus Ambrosia, especially Ambrosia artemisiifolia (common ragweed).
• The plant Helenium amarum (yellow sneezeweed).
• Parthenium hysterophorus (false ragweed)
• Artemisia tripartita subsp. tripartita (syn. Artemisia trifida; threetip sagebrush)
• Picris rhagadioloides (syn. Picris sprengeriana; tall oxtongue)
• Tetraneuris spp.

Synonyms

ambrosia, bristly oxtongue, bugloss, oxtongue, Picris echioides, ragweed