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"Hime-nogariyasu" (Calamagrostis hakonensis) belongs to Poaceae (the Grass family). It is a perennial herb that is native to Honshu and Hokkaido, as well as East Asia and Russia Far East. This grass grows in mountane valley or slopes and it can reach 25-75 cm in height. The rhizomes are short, the stems are erect and slender. The leaves are cauline and 7-30 cm long. It bears a panicle, 5-15 cm long from July to October. The pancle has usually about 2 branches at each nodes, and produce spikelets sparsely. The spikelets are pale yellowish green and sometimes tinged purple.
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