Persicaria hydropiper (L.) Delarbre [ Polygonum hydropiper L.]
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Persicaria hydropiper (L.) Delarbre [ Polygonum hydropiper L.] [Polygonaceae]
A. Fiori, G. Paoletti, Iconogr. Fl. Ital.: p. 120, t. 959, fig. 6 (1895-1904)