A Checklist of the Vascular Plants of Washington State
Hosted by the University of Washington Herbarium, Burke Museum
Hosted by the University of Washington Herbarium, Burke Museum
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Polygonaceae » Persicaria wallichii
Last updated 2/12/2024 by David Giblin.
Persicaria wallichii Greuter & Burdet[FNA5, HC2]
garden knotweed, Himalayan knotweed
Publication: Willdenowia. 19: 41. 1989.
Origin: Introduced from eastern Asia
selected vouchers: WTU
Notes: FNA5: "Persicaria wallichii is an ornamental that escapes infrequently in the flora area. A population in Nova Scotia apparently was ephemeral. Plants with leaf blades sparsely to densely pubescent abaxially and pedicels glabrous are var. wallichii, to which naturalized North American plants appear to be referable. Plants with leaf blades brownish-tomentose abaxially and pedicels usually pubescent are var. tomentosa S. P. Hong, which may be in cultivation in North America."
References: (none)
Infraspecies:
Synonyms & Misapplied Names:
Aconogonon polystachyum (Wall. ex Meisn.) M. Král
Pleuropteropyrum polystachyum (Wall. ex Meisn.) Munshi & G.N. Javied
Polygonum polystachyum Wall. ex Meisn.[HC]
Reynoutria polystachya (Wall. ex Meisn.) Moldenke
Rubrivena polystachya (Wall. ex Meisn.) M. Král
