Reynoutria japonica
Reynoutria japonica
(Itadori knotweed)
Plants
Exotic
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5 results for Reynoutria japonica (Itadori knotweed)
Download Data

Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
1669467 IDGemMain St., abandoned townsite.2010 17050122 Payetteunknown
1660320 MAPlymouthBare Cove Park2010 01090001 Charlesunknown
1667134 MEWashingtonca 5 km SSW of Lubec, just S of Boot Cove Rd2010 01050004 Passamaquoddy Bay-Bay of Fundyunknown
1669367 MEWashingtonTown of Machias, N bank of the Machias River, W of US 12010 01050002 Maine Coastalunknown
1669347 WVFayetteGorge of Kanawha River, around private campground, NE side of Kanawha River, Hwy. 60, 1 km SE of bridge of Gauley Bridge.2010 05050004 Lower Newunknown

Data Disclaimer: Number of records does not imply species abundance. This summary represent collection records only and may not reflect the actual distribution of established populations. These data are preliminary or provisional and are subject to revision. They are being provided to meet the need for timely best science. The data have not received final approval by the U.S. Geological Survey (USGS) and are provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the data.

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The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2026]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [2/20/2026].

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