Data sources

Each value Trefle shows for Helminthotheca echioides, 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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Sourced13 Differs from sources3 Source not recorded10 Not on the record6 Sources: TRY Plant Trait Database, Earlier Trefle data

Field	Shown	What the sources say
Core
Author	(L.) Holub	No source recorded	Source not recorded
Bibliography	Folia Geobot. Phytotax. 8: 176 (1973)	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	1973	No source recorded	Source not recorded
Descriptive
Common name	Oxtongue	No source recorded	Source not recorded
Family common name	Aster family	No source recorded	Source not recorded
Observations	Medit. to Caucasus, E. Europe to Turkmenistan	No source recorded	Source not recorded
Morphology
Average height	49 cm	49.11 cm · TRY Plant Trait Database · Measured · 22 observations · 2026-10-09 TRY 7.0 datasets 25, 86, 116, 164, 174, 175, 178, 251, 500, 574, 818, 882, 898, 926	Differs from sources
Biological type	therophyte	therophyte · TRY Plant Trait Database · Measured · 13 observations · 2026-10-09 TRY 7.0 datasets 4, 25, 71, 164, 174, 175, 178, 500, 918	Sourced
Flower color	yellow	yellow · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 4, 882	Sourced
Foliage texture	empty	coarse · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 4	Not on the record
Fruit color	white, red, brown	brown, red, white · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 882	Sourced
Fruit shape	achene	achene · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09 TRY 7.0 datasets 4, 882	Sourced
Maximum height	70 cm	70 cm · TRY Plant Trait Database · Measured · 6 observations · 2026-10-09 TRY 7.0 datasets 25, 86, 116, 164, 174, 175, 178, 251, 500, 574, 818, 882, 898, 926	Sourced
Sexuality	empty	hermaphrodite · 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
Bloom months	jun, jul, aug, sep	jun, jul · TRY Plant Trait Database · Measured · 5 observations · 2026-10-20 TRY 7.0 datasets 4, 174 1 earlier or rejected value Superseded feb, jul · TRY Plant Trait Database · Measured · 5 observations · 2026-10-09 TRY 7.0 datasets 4, 174	Differs from sources
Duration	annual, biennial, perennial	annual, biennial, perennial · TRY Plant Trait Database · Measured · 14 observations · 2026-10-09 TRY 7.0 datasets 4, 86, 164, 175, 178, 818, 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	empty	5 / 12 · fresh, never flooded (mesohydric) · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 178	Not on the record
Light	8 / 9 · light	7 / 9 · half-light to light · 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 · 3 observations · 2026-10-09 TRY 7.0 datasets 71, 445	Sourced
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	6 / 9 · rather rich (meso-eutrophic)	6 / 9 · rather rich (meso-eutrophic) · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 178	Sourced
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, 242	Sourced
Cultivation
Minimum root depth	70 cm	70 cm · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 818	Sourced
Other
Shade tolerance	—	None · TRY Plant Trait Database · Measured · 8 observations · 2026-10-09 TRY 7.0 datasets 174	Not on the record
Soil ph indicator	—	8 · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 178, 242	Not on the record
Temperature indicator	—	7 · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 242	Not on the record

Helminthotheca echioides (L.) Holub, 1973 43% complete

Oxtongue

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Data sources