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            Common names: common milkweed, butterfly flower, silkweed, silky swallow-wort, Virginia silkweed (German: Gewöhnliche Seidenpflanze)
           
        
        
        
          
              Taxonomy
           
            cellular organisms, Eukaryota, Viridiplantae, Streptophyta, Streptophytina, Embryophyta, Tracheophyta, Euphyllophyta, Spermatophyta, Magnoliophyta, Mesangiospermae, eudicotyledons, Gunneridae, Pentapetalae, asterids, lamiids, Gentianales, Apocynaceae, Asclepiadoideae, Asclepiadeae, Asclepiadinae, Asclepias
           
          
        
      
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