Data sources

Each value Trefle shows for Echium plantagineum, 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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Sourced14 Differs from sources3 Source not recorded9 Not on the record6 Sources: TRY Plant Trait Database, Earlier Trefle data

Field	Shown	What the sources say
Core
Author	L.	No source recorded	Source not recorded
Bibliography	Mant. Pl. 2: 202 (1771)	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	1771	No source recorded	Source not recorded
Descriptive
Common name	Blue echium	No source recorded	Source not recorded
Observations	Great Britain, Macaronesia to Caucasus	No source recorded	Source not recorded
Morphology
Average height	43 cm	43.25 cm · TRY Plant Trait Database · Measured · 24 observations · 2026-10-09 TRY 7.0 datasets 25, 45, 164, 175, 178, 270, 299, 301, 474, 520, 598, 655, 882, 884	Differs from sources
Biological type	hemicryptophyte	hemicryptophyte · TRY Plant Trait Database · Measured · 9 observations · 2026-10-09 TRY 7.0 datasets 164, 174, 175, 178, 655, 833, 918	Sourced
Flower color	blue, purple, magenta	blue, magenta, purple · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 350, 655, 882	Sourced
Fruit color	brown, grey, black	black, brown, grey · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09 TRY 7.0 datasets 882	Sourced
Fruit shape	mericarp	mericarp · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09 TRY 7.0 datasets 350, 882	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
Inflorescence type	empty	cyme · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 350	Not on the record
Maximum height	60 cm	60 cm · TRY Plant Trait Database · Measured · 8 observations · 2026-10-09 TRY 7.0 datasets 25, 45, 164, 175, 178, 270, 299, 301, 474, 520, 598, 655, 882, 884	Sourced
Vegetable	false	No source recorded	Source not recorded
Phenology
Bloom months	feb, mar, jun	feb, mar, jun · TRY Plant Trait Database · Measured · 11 observations · 2026-10-20 TRY 7.0 datasets 45, 174, 833 1 earlier or rejected value Superseded feb, mar · TRY Plant Trait Database · Measured · 11 observations · 2026-10-09 TRY 7.0 datasets 45, 174, 833	Sourced
Duration	annual, biennial	annual, biennial · TRY Plant Trait Database · Measured · 16 observations · 2026-10-09 TRY 7.0 datasets 25, 110, 164, 178, 299, 301, 460, 882, 918	Sourced
Ecology
Atmospheric humidity	3 / 9 · rather dry air	3 / 9 · rather dry air · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Ground humidity	3 / 12 · rather dry (xerophilous)	3 / 12 · rather dry (xerophilous) · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 178, 489	Sourced
Light	8 / 9 · light	9 / 9 · full sun · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 178	Differs from sources
Nitrogen fixation	None	None · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09 TRY 7.0 datasets 71, 110, 444	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	8 / 9 · very rich (pereutrophic)	6 / 9 · rather rich (meso-eutrophic) · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 178, 489	Differs from sources
Soil salinity	0 / 9 · absent from saline soils	0 / 9 · absent from saline soils · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 178, 489	Sourced
Usda legacy
C n ratio	empty	23.3 · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 412	Not on the record
Other
Propagation method	—	seed · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 174	Not on the record
Shade tolerance	—	None · TRY Plant Trait Database · Measured · 14 observations · 2026-10-09 TRY 7.0 datasets 174	Not on the record
Soil ph indicator	—	6 · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 178, 489	Not on the record
Temperature indicator	—	9 · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 489	Not on the record

Echium plantagineum L., 1771 43% complete

Blue echium

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Data sources