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Taxon author: (Rydb.) T.M. Barkley

ITIS records citing taxon author "(Rydb.) T.M. Barkley"
 
 Kingdom Plantae
  Senecio foetidus var. hydrophiloides (Rydb.) T.M. Barkley ex Cronquist -- not accepted
  Senecio integerrimus var. scribneri (Rydb.) T.M. Barkley -- accepted -- Scribner's ragwort
   

A gray bar