Photo: Chelone glabra 1.

Closeup of flower. Botanical garden Kaisaniemi, Helsinki, Finland. Planted. 2000-08-22.

Chelone glabra L.
Engl.: white turtlehead, balmony, salt-rheum weed, shellflower, snakehead, turtlebloom, turtlehead.
Deu.: Kahle Schildblume, Kahler Schlangenkopf.
Bot. syn.: Chelone chlorantha Pennell & Wherry, Chelone montana (Raf.) Pennell & Wherry