American bistort (Western bistort) (smokeweed) (mountain meadow knotweed) (Polygonum bistortoides (Bistorta bistortoides), Gunnison National Forest, Colorado, United States of America, North America
Spring bloom of Persicaria bistorta at Lej da Champfer, St. Moritz, Upper Engadine, Canton of Graubunden, Switzerland, Europe
Spring bloom of Persicaria bistorta at Lej da Champfer, St. Moritz, Upper Engadine, Canton of Graubunden, Switzerland, Europe