Data sources

Each value Trefle shows for Betula ermanii, 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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Sourced2 Differs from sources1 Source not recorded9 Not on the record2 Sources: TRY Plant Trait Database

Field	Shown	What the sources say
Core
Author	Cham.	No source recorded	Source not recorded
Bibliography	Linnaea 6: 537 (1831)	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	1831	No source recorded	Source not recorded
Descriptive
Common name	Russian rock birch	No source recorded	Source not recorded
Observations	Siberia to Japan	No source recorded	Source not recorded
Morphology
Average height	1292 cm	1291.5 cm · TRY Plant Trait Database · Measured · 38 observations · 2026-10-09 TRY 7.0 datasets 68, 214, 251, 273, 431, 685, 873	Differs from sources
Vegetable	false	No source recorded	Source not recorded
Phenology
Duration	perennial	perennial · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09 TRY 7.0 datasets 443, 879	Sourced
Ecology
Nitrogen fixation	None	None · TRY Plant Trait Database · Measured · 7 observations · 2026-10-09 TRY 7.0 datasets 20, 57, 444, 445	Sourced
Usda legacy
C n ratio	empty	19.8 · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09 TRY 7.0 datasets 307, 412	Not on the record
Other
Human usage type	—	timber · TRY Plant Trait Database · Reported · 1 observation · 2026-10-09 TRY 7.0 datasets 68	Not on the record

Betula ermanii Cham., 1831 14% complete

Russian rock birch

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

Data sources