Photo: Ageratum houstonianum.

Flowering plant, drenched by constant rain. Annala, Helsinki, Finland. Planted. 2004-08-18.
Ageratum houstonianum P. Mill. Engl.: bluemink, blue billygoat-weed, flossflower. Deu.: Mexikanischer Leberbalsam. Suom.: sinitähtönen, agera. Sven.: leverbalsam, ageratum, blå leverbalsam. Bot. syn.: Ageratum mexicanum Sims
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Photo: Ageratum houstonianum.