Picris rhagadioloides (syn. Picris sprengeriana; tall oxtongue)
The plant Helenium amarum (yellow sneezeweed).
Any plant in the genus Ambrosia, especially Ambrosia artemisiifolia (common ragweed).
Parthenium hysterophorus (false ragweed)
Artemisia tripartita subsp. tripartita (syn. Artemisia trifida; threetip sagebrush)
Tetraneuris spp.
A flowering plant of the genus Picris, especially Picris echioides (bristly oxtongue).
A flowering plant of the genus Anchusa, especially Anchusa officinalis (true alkanet).
Beef tongue (a foodstuff).