Data sources

Each value Trefle shows for Hieracium chlorocephalum subsp. stygium, 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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Sourced4 Source not recorded3 Not on the record2 Sources: TRY Plant Trait Database, POWO / WCVP (Kew)

Field	Shown	What the sources say
Core
Author	(R.Uechtr.) Zahn	(R.Uechtr.) Zahn · POWO / WCVP (Kew) · Reported · 2026-10-11	Sourced
Bibliography	(1921). Zahn, in Engler, Pflanzenr. 77. 1921.	No source recorded	Source not recorded
Rank	ssp	No source recorded	Source not recorded
Status	accepted	accepted · POWO / WCVP (Kew) · Reported · 2026-10-11	Sourced
Year	1921	1921 · POWO / WCVP (Kew) · Reported · 2026-10-11	Sourced
Descriptive
Family common name	Aster family	No source recorded	Source not recorded
Morphology
Average height	empty	50 cm · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 500	Not on the record
Biological type	hemicryptophyte	hemicryptophyte · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 500, 918	Sourced
Phenology
Duration	empty	perennial · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 918	Not on the record

Hieracium chlorocephalum subsp. stygium (R.Uechtr.) Zahn, 1921 4% complete

No common name

Data sources

Hieracium chlorocephalum subsp. stygium (R.Uechtr.) Zahn, 1921 4% complete

No common name

.fa-secondary{opacity:.4} Data sources

Data sources