Euphrasia stricta J.P.Wolff ex J.F.Lehm., 1809 39% complete

Drug eyebright

Prim. Fl. Herbip.: 43 (1809)

Data sources

Each value Trefle shows for Euphrasia stricta, 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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Sourced12 Differs from sources3 Source not recorded9 Not on the record5 Sources: TRY Plant Trait Database, Earlier Trefle data
Field Shown What the sources say
Core
Author J.P.Wolff ex J.F.Lehm. No source recorded
Source not recorded
Bibliography Prim. Fl. Herbip.: 43 (1809) 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 1809 No source recorded
Source not recorded
Descriptive
Common name Drug eyebright No source recorded
Source not recorded
Observations Europe to Siberia No source recorded
Source not recorded
Morphology
Average height 13 cm
  • 12.5 cm · TRY Plant Trait Database · Measured · 13 observations · 2026-10-09
    TRY 7.0 datasets 115, 116, 164, 203, 519, 918, 926
Differs from sources
Biological type therophyte
  • therophyte · TRY Plant Trait Database · Measured · 7 observations · 2026-10-09
    TRY 7.0 datasets 4, 71, 164, 203, 500, 918
Sourced
Flower color blue Differs from sources
Foliage texture empty Not on the record
Fruit shape empty Not on the record
Growth habit Forb/herb
  • Forb/herb · Earlier Trefle data · Reported · 2026-10-19
    value present before provenance tracking (2022 import), no source recorded
Sourced
Maximum height empty
  • 30 cm · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09
    TRY 7.0 datasets 115, 116, 164, 203, 519, 918, 926
Not on the record
Sexuality hermaphrodite Sourced
Vegetable false No source recorded
Source not recorded
Phenology
Bloom months jun, jul, aug, sep, oct Differs from sources
Duration annual
  • annual · TRY Plant Trait Database · Measured · 6 observations · 2026-10-09
    TRY 7.0 datasets 4, 25, 28, 164, 203, 918
Sourced
Ecology
Atmospheric humidity 5 / 9 · medium air humidity
  • 5 / 9 · medium air humidity · Earlier Trefle data · Reported · 2026-10-19
    value present before provenance tracking (2022 import), no source recorded
Sourced
Ground humidity 5 / 12 · fresh, never flooded (mesohydric)
  • 5 / 12 · fresh, never flooded (mesohydric) · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09
    TRY 7.0 datasets 203, 242
Sourced
Light 8 / 9 · light Sourced
Nitrogen fixation None Sourced
Ph maximum 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
Ph minimum pH 7
  • pH 7 · 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 2 / 9 · very poor (peroligotrophic)
  • 2 / 9 · very poor (peroligotrophic) · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09
    TRY 7.0 datasets 242
Sourced
Soil salinity 0 / 9 · absent from saline soils
  • 0 / 9 · absent from saline soils · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09
    TRY 7.0 datasets 242, 489
Sourced
Other
Soil ph indicator — Not on the record
Temperature indicator — Not on the record