The genus Reynoutria includes ca. six species native to East Asia. Hybridization is rather common in this genus. The hybrid Reynoutria ×bohemica Chrtek & Chrtková is currently widespread in Europe, Asia, North and partly South America, Australia and New Zealand. A hybrid between Fallopia compacta (Hook. f.) G.H. Loos & P. Keil and F. sachalinensis (F. Schmidt) Nakai was described recently as Fallopia ×moravica Hodálová & Mereďa. Since we accept the genus Reynoutria as separate from Fallopia, we propose a new combination for this hybrid: Reynoutria ×moravica (Hodálová & Mereďa) Olshan­skyi & Antonenko, comb. nov.

Keywords: Reynoutria, Fallopia, Polygonaceae, Fallopia ×moravica, Reynoutria ×moravica, hybrid, nomenclature

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