flowers of serpent grass in mountain

adders agent alp alpine bistort bistorta bloom carnea caucasian caucasus cirque corrie elbrus english floral flower flowers glacier grass grassland head hemostatic herb herbage hump knotgrass last line meadow meadows medicinal mount mountain plant plantlet plants polygonum prairie range ridge rock seneca senega serpent serpentary shieling slopes snakeroot snakeweed snow snowfields valley vegetation wilderness wort