Data sources

Each value Trefle shows for Frangula alnus subsp. alnus, 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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Sourced3 Source not recorded6 Not on the record3 Sources: TRY Plant Trait Database, Earlier Trefle data

Field	Shown	What the sources say
Core
Author	empty	No source recorded 1 earlier or rejected value Rejected Miller · Earlier Trefle data · Reported · 2026-10-19 autonym: no authorship under the Code	Not on the record
Bibliography	Gard. Dict. ed. 8: n.º 1 (1768)	No source recorded	Source not recorded
Rank	ssp	No source recorded	Source not recorded
Status	accepted	No source recorded	Source not recorded
Year	1768	No source recorded	Source not recorded
Descriptive
Observations	Europe to C. Siberia and Xinjiang, NW. Africa	No source recorded	Source not recorded
Morphology
Average height	450 cm	450 cm · TRY Plant Trait Database · Measured · 6 observations · 2026-10-09 TRY 7.0 datasets 20, 116, 214, 241	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
Vegetable	false	No source recorded	Source not recorded
Phenology
Duration	empty	perennial · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 28	Not on the record
Ecology
Nitrogen fixation	None	None · TRY Plant Trait Database · Measured · 7 observations · 2026-10-09 TRY 7.0 datasets 20, 57, 71, 444	Sourced
Usda legacy
C n ratio	empty	18.9 · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09 TRY 7.0 datasets 70	Not on the record

Frangula alnus subsp. alnus 1768 10% complete

No common name

Data sources

Frangula alnus subsp. alnus 1768 10% complete

No common name

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

Data sources