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"Oo-kasamochi" (Pleurospermum camtschaticum) belongs to Apiaceae (the Carrot family). It is a perennial herb that is native from Chubu district north to Tohoku district in Honshu, Hokkaido, the Korean Peninsula, China and Siberia. This herb grows in mountainous to alpine grasslands, and can reach 50-150 cm in height. The stem is thick, hollow and 1-2 cm in diameter. The leaves are 1-3 times triternate pinnately compound, 10-30 cm in length, with pinnately split lobes and sharp tips. The large compound umbel are borne from July to August and usually have more than a dozen umbellets. There are more than 20 small white flowers with a diameter of about 3 mm in the umbellet. The base of the inflorescence has bracts, and the base of the umbellet has involucels. The fruit consists of 2 oblong mericarps.
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