Persicaria bistorta (L.) Samp. [ Polygonum bistorta L.]
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Persicaria bistorta (L.) Samp. [ Polygonum bistorta L.] [Polygonaceae]
F.E. Guérin-Méneville, Dict. Pittores. Hist. Nat., vol. 1 : t. 49, fig. 5 (1833-1834)