subfam. Polygonoideae genusFallopia speciesFallopia japonica Show Lower Taxa Fallopia japonica var. japonica (Houttuyn) Ronse Decraene Bot. J. Linn. Soc. 98:
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Fallopia cilinodis, Fallopia convolvulus, Fallopia dumetorum, Fallopia japonica, Fallopia sachalinensis, Fallopia scandens, Fallopia ×bohemica Adanson
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C. Freeman, Harold R. Hinds† Common names: Bohemian knotweed Basionym: Reynoutria ×bohemica Chrtek & Chrtková as. Nár. Muz. Praze Rada Prír. 152: 120. 1983
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Like F. japonica, it spreads aggressively and has been declared noxious in California, Oregon, and Washington. It hybridizes with F. japonica, yielding
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