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The "Inu-douna" (Parasenecio aidzuensis) belongs to Asteraceae (the Aster family). It is a perennial herb that is distributed from northern Kanto region to Tohoku region in Honshu, and Hokkaido. It grows in mountain forest floors, forest edges, and valleys, reaching a height of 1 to 2 m. The stem is erect and hollow. The leaves are triangular with irregular serrations on the edges. The leaves below the middle of the stem have broad wings, and the base of the wings is large and ear-shaped, enfolding the stem. From August to October, white flower heads bloom at the tips of the stems. The flower heads consist of 8 to 9 small flowers, all of which are hermaphroditic tubular flowers. In the Tohoku region on the Sea of Japan side and in Nagano Prefecture, the spring shoots are eaten as a wild vegetable.
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