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20b. Polygonum japonicum var. conspicuum Nakai, J. Coll. Sci. Imp. Univ. Tokyo. 23: 10. 1908.
显花蓼 xian hua liao
Persicaria conspicua (Nakai) Nakai ex T. Mori; P. sterilis (Nakai) Nakai & Ohki; Polygonum conspicuum (Nakai) Nakai; P. japonicum var. micranthum Nakai; P. japonicum var. micranthum Nakai f. brevistylum Nakai; P. sterile Nakai; P. sterile var. brevistylum (Nakai) Nakai.
Flowers large. Perianth 5-6 mm, glandular dotted. Achenes opaque.
Streamsides, riverbanks; sea level to 1500 m. Anhui, Fujian, Jiangsu, Taiwan, Zhejiang [Japan, Korea].
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