Polygonum arenarium Waldst. & Kit., 1802 31% complete

European knotweed

Descr. Icon. Pl. Hung. 1: 69 (1802)

Data sources

Each value Trefle shows for Polygonum arenarium, 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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Sourced11 Source not recorded9 Not on the record1 Sources: TRY Plant Trait Database, Earlier Trefle data
Field Shown What the sources say
Core
Author Waldst. & Kit. No source recorded
Source not recorded
Bibliography Descr. Icon. Pl. Hung. 1: 69 (1802) 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 1802 No source recorded
Source not recorded
Descriptive
Common name European knotweed No source recorded
Source not recorded
Observations EC. & SE. Europe to Caucasus No source recorded
Source not recorded
Morphology
Average height 18 cm Sourced
Biological type therophyte Sourced
Flower color purple
  • purple · Earlier Trefle data · Reported · 2026-10-19
    value present before provenance tracking (2022 import), no source recorded
Sourced
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
Ecology
Atmospheric humidity 7 / 9 · humid air
  • 7 / 9 · humid air · Earlier Trefle data · Reported · 2026-10-19
    value present before provenance tracking (2022 import), no source recorded
Sourced
Light 9 / 9 · full sun
  • 9 / 9 · full sun · Earlier Trefle data · Reported · 2026-10-19
    value present before provenance tracking (2022 import), no source recorded
Sourced
Nitrogen fixation empty Not on the record
Ph maximum pH 8
  • pH 8 · Earlier Trefle data · Inferred · 2026-10-19
    value present before provenance tracking (2022 import), no source recorded derived from a Baseflor soil reaction class by the 2022 import, a class not a measurement
Sourced
Ph minimum pH 7.5
  • pH 7.5 · Earlier Trefle data · Inferred · 2026-10-19
    value present before provenance tracking (2022 import), no source recorded derived from a Baseflor soil reaction class by the 2022 import, a class not a measurement
Sourced
Soil nutriments 8 / 9 · very rich (pereutrophic)
  • 8 / 9 · very rich (pereutrophic) · Earlier Trefle data · Reported · 2026-10-19
    value present before provenance tracking (2022 import), no source recorded
Sourced
Soil salinity 7 / 9 · strongly saline (euhaline)
  • 7 / 9 · strongly saline (euhaline) · Earlier Trefle data · Reported · 2026-10-19
    value present before provenance tracking (2022 import), no source recorded
Sourced