Kamchatka rhododendron (Therorhodion camtschaticum) belongs to Ericaceae (the Azalea family). It is a deciduous shrub that is distributed northward from Tohoku district of Honshu to Hokkaido, as well as the Kuril Islands, Alaska and Siberia. This shrub grows on alpine or cold region screes, and can reach 10-30 cm in height. The stems crawl on the ground and the upper parts are scendent. The leaves are obovate, alternate and foreign papery. The bristly and glandular hairs are borne on the leaf-margins. The dark magenta, bell-shaped flowers bloom at the terminal branches from July to August. The upper petals have dark rose pink, fine dots. The flower has ten stamens.