Japanese hawkweed oxtongue
Picris hieracioides L. subsp. japonica (Thunb.) Krylov
[Asteraceae]
Kouzorina (コウゾリナ, 剃刀菜/顔剃菜)
Lifeform: perennial forb
Distribution: temperate Asia (Mongolia - Siberia - China - Korea - Japan - Sakhalin)
Habitat: grasslands and shrubs, often establishing after disturbances
Seed dispersal: wind
Synonyms
P. hieracioides var. glabrescens (Regel) Ohwi, nom. inval.
P. hieracioides var. japonica (Thunb.) Regel ex Herder
P. japonica Thunb. (basionym)
Picris hieracioides on Mount Usu
Near the 4th crater on August 21 1987. The background is the slope of Mount O-usu.
When the photos were in the crater basin on September 19 2008, the defoliation began but the flowering kept going.