Carex dolichostachya is a species of flowering plant in the sedge genus Carex, family Cyperaceae. It is native to eastern Asia; central and southeast China, Taiwan, the Philippines, Korea, the Ryukyu Islands, and Japan. Its popular cultivar 'Kaga-nishiki' is sold in the US by the trade designation .
Subtaxa The following subtaxa are accepted: Carex dolichostachya subsp. dolichostachya Carex dolichostachya f. imbecillis (Ohwi) T.Koyama – Kyushu, Japan Carex dolichostachya subsp. trichosperma (Ohwi) T.Koyama – Alishan Range, Taiwan
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