Fallopia japonica × Fallopia sachalinensis

Washington: Clallam County: Silty floodplain of Dungeness River, near Route 101 bridge, W of Sequim. Elev. 80 meters
48.0767° N, 123.1533° W; T30N R4W S23
Coordinate Source: Field measured.
Local adventive, full sun, with Salix sitchensis, Alnus rubra, Rubus spectabilis. White male flowers, 1.5 m tall herbs.

Peter F. Zika 16599, Sep 27, 2001
WS, Accession: 372288