<nowiki>Ageratum houstonianum ʽBlue Danube’; Ageratum houstonianum ʽBlue Danube’; Ageratum houstonianum ʽBlue Danube’; Ageratum houstonianum ʽBlue Danube’; Ageratum houstonianum ʽBlue Danube’; Ageratum houstonianum ʽBlue Danube’; Ageratum houstonianum ʽBlue Danube’; Ageratum houstonianum ʽBlue Danube’; Ageratum houstonianum ʽBlue Danube’; Ageratum houstonianum ʽBlue Danube’; Ageratum houstonianum ʽBlue Danube’; Ageratum houstonianum ʽBlue Danube’; Ageratum houstonianum ʽBlue Danube’; Ageratum houstonianum ʽBlue Danube’; Ageratum houstonianum ʽBlue Danube’; Ageratum houstonianum ʽBlue Danube’; 蓝色多瑙河熊耳草; Ageratum houstonianum ʽBlue Danube’; Ageratum houstonianum ʽBlue Danube’; Ageratum houstonianum ʽBlue Danube’; 蓝色多瑙河熊耳草; 蓝色多瑙河熊耳草; Ageratum houstonianum ʽBlue Danube’; cultivar of Ageratum houstonianum; 菊科藿香蓟属植物</nowiki>