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The "Uzen-torikabuto" (Aconitum okuyamae) belongs to Ranunculaceae (the Buttercup family). It is a perennial herb that is distributed in the Tohoku region of Honshu, Japan. It grows in mountain forests, forest edges, and grasslands, and grows to a height of 50 to 180 cm. The stem is erect or sloping. The leaves are kidney-shaped, palmately 5 to 7-lobed, with coarse serrations or frond-like incisions. From August to October, it produces flowers of a blue-purple to pale reddish-purple color in inflorescences at the stem tips. There are 5 to 15 flowers in each inflorescence, which bloom from the top to the bottom. The parts that look like petals are actually sepals, consisting of one upper sepal, two lateral sepals, and two lower sepals. The outer surface of the sepals is covered with spreading hairs. The fruit is a follicle that grows upright. The Japanese name comes from the fact that it was discovered in Yamagata Prefecture (formerly Uzen Province).
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