Data sources

Each value Trefle shows for Jacobaea erratica, 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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Sourced9 Differs from sources4 Source not recorded10 Not on the record5 Sources: TRY Plant Trait Database, Earlier Trefle data

Field	Shown	What the sources say
Core
Author	(Bertol.) Fourr.	No source recorded	Source not recorded
Bibliography	Ann. Soc. Linn. Lyon, sér. 2, 16: 404 (1868)	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	1868	No source recorded	Source not recorded
Descriptive
Common name	Water ragwort	No source recorded	Source not recorded
Family common name	Aster family	No source recorded	Source not recorded
Observations	Europe to Caucasus	No source recorded	Source not recorded
Morphology
Average height	60 cm	60 cm · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 71, 164, 500, 918	Sourced
Biological type	hemicryptophyte	hemicryptophyte · TRY Plant Trait Database · Measured · 6 observations · 2026-10-09 TRY 7.0 datasets 4, 71, 164, 500, 918	Sourced
Flower color	yellow	yellow · TRY Plant Trait Database · Measured · 2 observations · 2026-10-20 TRY 7.0 datasets 4 1 earlier or rejected value Superseded yellow · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 4	Sourced
Fruit shape	empty	nut · TRY Plant Trait Database · Measured · 1 observation · 2026-10-20 TRY 7.0 datasets 4 1 earlier or rejected value Superseded nut · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 4	Not on the record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	78 cm	77.5 cm · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 71, 164, 500, 918	Differs from sources
Sexuality	empty	gynomonoecious · TRY Plant Trait Database · Measured · 1 observation · 2026-10-20 TRY 7.0 datasets 4 1 earlier or rejected value Superseded gynomonoecious · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 4	Not on the record
Vegetable	false	No source recorded	Source not recorded
Phenology
Duration	biennial	biennial · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 4, 164, 918	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
Ground humidity	empty	6 / 12 · moist (meso-hygrophilous) · TRY Plant Trait Database · Measured · 1 observation · 2026-10-20 TRY 7.0 datasets 242 1 earlier or rejected value Superseded 6 / 12 · moist (meso-hygrophilous) · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 242	Not on the record
Light	8 / 9 · light	7 / 9 · half-light to light · TRY Plant Trait Database · Measured · 1 observation · 2026-10-20 TRY 7.0 datasets 489 1 earlier or rejected value Superseded 7 / 9 · half-light to light · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 489	Differs from sources
Nitrogen fixation	None	None · TRY Plant Trait Database · Measured · 2 observations · 2026-10-20 TRY 7.0 datasets 71 1 earlier or rejected value Superseded None · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 71	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	5 / 9 · intermediate (mesotrophic)	6 / 9 · rather rich (meso-eutrophic) · TRY Plant Trait Database · Measured · 1 observation · 2026-10-20 TRY 7.0 datasets 242 1 earlier or rejected value Superseded 6 / 9 · rather rich (meso-eutrophic) · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 242	Differs from sources
Soil salinity	0 / 9 · absent from saline soils	1 / 9 · barely saline (hyperoligohaline) · TRY Plant Trait Database · Measured · 2 observations · 2026-10-20 TRY 7.0 datasets 242, 489 1 earlier or rejected value Superseded 1 / 9 · barely saline (hyperoligohaline) · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 242, 489	Differs from sources
Other
Soil ph indicator	—	7 · TRY Plant Trait Database · Measured · 1 observation · 2026-10-20 TRY 7.0 datasets 489 1 earlier or rejected value Superseded 7 · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 489	Not on the record
Temperature indicator	—	6 · TRY Plant Trait Database · Measured · 1 observation · 2026-10-20 TRY 7.0 datasets 242 1 earlier or rejected value Superseded 6 · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 242	Not on the record

Jacobaea erratica (Bertol.) Fourr., 1868 37% complete

Water ragwort

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Data sources