The Kamchatka thistle (Cirsium kamtschaticum) belongs to Asteraceae (the Aster family). It is a perennial herb that is native to Hokkaido, the Kuril Islands, as well as Sakhalin, Alaska and Siberia. This herb grows in alpine open grasslands, and can reach 50-100 cm in height. The leaves are broad-elliptic to obovate, and subentire to coarsely pinnatifid. The basal leaves blight in flower season. The pink to purple flower-heads bloom from July to September. The bracts are globose, and the phyllaries are aslant spreading or inner phyllaries are inflected.