Epilobium tetragonum L., 1753 39% complete

Square-stemmed willowherb

Sp. Pl.: 348 (1753)

Data sources

Each value Trefle shows for Epilobium tetragonum, 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.

Something wrong? Suggest a correction.

Sourced10 Differs from sources2 Source not recorded12 Not on the record7 Sources: TRY Plant Trait Database
Field Shown What the sources say
Core
Author L. No source recorded
Source not recorded
Bibliography Sp. Pl.: 348 (1753) 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 1753 No source recorded
Source not recorded
Descriptive
Common name Square-stemmed willowherb No source recorded
Source not recorded
Observations Macaronesia, Europe, Medit. to C. Asia and W. Himalaya No source recorded
Source not recorded
Morphology
Average height 65 cm
  • 65 cm · TRY Plant Trait Database · Measured · 9 observations · 2026-10-09
    TRY 7.0 datasets 25, 174, 178, 203, 500, 617, 882, 918
Sourced
Biological type hemicryptophyte
  • hemicryptophyte · TRY Plant Trait Database · Measured · 17 observations · 2026-10-09
    TRY 7.0 datasets 4, 25, 71, 174, 175, 178, 203, 500, 918
Sourced
Flower color magenta Sourced
Foliage texture empty Not on the record
Fruit shape capsule Sourced
Maximum height 88 cm
  • 87.5 cm · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09
    TRY 7.0 datasets 25, 174, 178, 203, 500, 617, 882, 918
Differs from sources
Sexuality empty Not on the record
Vegetable false No source recorded
Source not recorded
Phenology
Bloom months feb, jul Sourced
Duration perennial
  • perennial · TRY Plant Trait Database · Measured · 10 observations · 2026-10-09
    TRY 7.0 datasets 4, 25, 71, 175, 178, 203, 882, 918
Sourced
Ecology
Atmospheric humidity 7 / 9 · humid air No source recorded
Source not recorded
Ground humidity 7 / 12 · wet, flooded a few weeks a year (hygrophilous)
  • 7 / 12 · wet, flooded a few weeks a year (hygrophilous) · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09
    TRY 7.0 datasets 178, 203, 489
Sourced
Light 6 / 9 · half-shade to half-light
  • 7 / 9 · half-light to light · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09
    TRY 7.0 datasets 178, 489
Differs from sources
Nitrogen fixation None Sourced
Ph maximum pH 7.5 No source recorded
Source not recorded
Ph minimum pH 7 No source recorded
Source not recorded
Soil nutriments 6 / 9 · rather rich (meso-eutrophic)
  • 6 / 9 · rather rich (meso-eutrophic) · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09
    TRY 7.0 datasets 178, 489
Sourced
Soil salinity 0 / 9 · absent from saline soils
  • 0 / 9 · absent from saline soils · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09
    TRY 7.0 datasets 178
Sourced
Usda legacy
C n ratio empty Not on the record
Other
Propagation method — Not on the record
Shade tolerance — Not on the record
Soil ph indicator — Not on the record
Temperature indicator — Not on the record