71348444 - Meadow knotweed (Bistorta officinalis) in flower meadow, Black Forest, Baden-Wuerttemberg, Germany71438799 - Meadow landscape with snake knotweed in the Vltava Valley near Stožec in the Šumava National Park in the Bohemian Forest in the Czech Republic13814098 - Lupine and Bistort wildflowers cover high alpine meadow, Absaroka Mountains near Cody and Meeteetse, Wyoming, USA.
