Data sources

Each value Trefle shows for Oxytropis nigrescens, 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 recorded7 Not on the record2 Sources: TRY Plant Trait Database, Earlier Trefle data, POWO / WCVP (Kew)

Field	Shown	What the sources say
Core
Author	(Pall.) Fisch. ex DC.	(Pall.) Fisch. ex DC. · POWO / WCVP (Kew) · Reported · 2026-10-11	Sourced
Bibliography	Prodr. 2:278. 1825	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	1825	No source recorded	Source not recorded
Descriptive
Observations	Siberia to Russian Far East, Subarctic America to Canada	No source recorded	Source not recorded
Morphology
Average height	empty	2 cm · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 73	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
Vegetable	false	No source recorded	Source not recorded
Phenology
Duration	perennial	perennial · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 110, 460	Sourced
Ecology
Nitrogen fixation	High	High · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 20, 57	Sourced
Cultivation
Minimum root depth	empty	10 cm · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 73	Not on the record

Oxytropis nigrescens (Pall.) Fisch. ex DC., 1825 10% complete

No common name

Data sources

Oxytropis nigrescens (Pall.) Fisch. ex DC., 1825 10% complete

No common name

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

Data sources