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 » Polygonum nuttallii
Polygonum nuttallii Small[FNA5, HC, HC2]
Nuttall's knotweed
Publication: Mongr. Amer. Sp. Polygonum. 132, plate 53. 1895.
Origin: Native
Herbarium search: CPNWH
Notes: FNA5: "C. L. Hitchcock (1964) suggested that Polygonum nuttallii is but a small-flowered form of P. spergulariiforme. Although morphologically similar, P. nuttallii differs from P. spergulariiforme in some respects, including its wiry, purplish stems, short and funnelform ocreae, adaxially glaucous leaves, longer bracts, shorter fruiting perianth, and achenes."
Last updated 2/13/2024 by David Giblin.
Synonyms & Misapplied Names:
Polygonum douglasii Greene ssp. nuttallii (Small) J.C. Hickman[ILBC4]
Polygonum intermedium Nutt. ex S. Watson
