Edited: Langsdorff's Lousewort Pedicularis langsdorffii ssp. arctica). I initially suggested White-coloured Lousewort (Genus Pedicularis), because I did not appreciate there are white-coloured variants of Pedicularis langsdorffii ssp. arctica. White, alpine, Keno City, Keno Hill, Yukon, June 28/07