Polygonum majus (Meisn.) Piper, 1901 14% complete

Wiry knotweed

C.V.Piper & R.K.Beattie, Fl. Palouse Reg.: 63 (1901)

Data sources

Each value Trefle shows for Polygonum majus, with what every source says about it. When sources disagree, the strongest source is shown (how sources are ranked). Values imported before sources were recorded one by one are marked Source not recorded.

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Sourced4 Source not recorded8 Sources: TRY Plant Trait Database, Earlier Trefle data, POWO / WCVP (Kew)
Field Shown What the sources say
Core
Author (Meisn.) Piper Sourced
Bibliography C.V.Piper & R.K.Beattie, Fl. Palouse Reg.: 63 (1901) No source recorded
Source not recorded
Phylum Tracheophyta No source recorded
Source not recorded
Rank species No source recorded
Source not recorded
Status accepted No source recorded
Source not recorded
Year 1901 No source recorded
Source not recorded
Descriptive
Common name Wiry knotweed No source recorded
Source not recorded
Observations W. Canada to W. U.S.A. No source recorded
Source not recorded
Morphology
Growth habit Forb/herb
  • Forb/herb · Earlier Trefle data · Reported · 2026-10-19
    value present before provenance tracking (2022 import), no source recorded
Sourced
Vegetable false No source recorded
Source not recorded
Phenology
Duration annual Sourced
Cultivation
Minimum root depth 17 cm Sourced