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"Tani-jakou-so" (Chelonopsis longipes) belongs to Lamiaceae (the Mint family). It is an endemic species of Japan, distributed from the southwestern part of Hokkaido to Honshu, Shikoku and Kyushu. This herb grows in the valleys of the mountain area, and the height is 60-100 cm. The leaves are broad lanceolate to oblong, and arranged in opposite. The purplish red flowers bloom on the long peduncles from the axils, in September and October. The flower is labiate and it is 3.5-4 cm in length.
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