Persicaria bistorta (L.) Samp. [ Polygonum bistorta L.]
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Persicaria bistorta (L.) Samp. [ Polygonum bistorta L.] [Polygonaceae]
W. Woodville, W.J. Hooker, G. Spratt, Med. Bot., ed. 3, vol. 4 : t. 232 (1832)