Ezo-lousewort (tentative translation)
Pedicularis yezoensis Maxim. [Scrophulariaceae]
Ezoshiogama (エゾシオガマ, 蝦夷塩竃)
Lifeform: perennial forb
Distribution: Japan (central Honshu and Hokkaido)
Habitat: grassland in alpine and subalpine zones (not strict)
Varieties
- var. pubescens Hara (ビロウドエゾシオガマ)
Pedicularis yezoensis on Mount Usu

The photo was taken in the crater basion.