Data sources

Each value Trefle shows for Alnus incana subsp. rugosa, 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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Sourced6 Differs from sources1 Source not recorded12 Not on the record9 Sources: TRY Plant Trait Database, POWO / WCVP (Kew)

Field	Shown	What the sources say
Core
Author	(Du Roi) R.T.Clausen	(Du Roi) R.T.Clausen · POWO / WCVP (Kew) · Reported · 2026-10-11	Sourced
Bibliography	Mem. Cornell Univ. Agric. Exp. Sta. 291:8. 1949	No source recorded	Source not recorded
Rank	ssp	No source recorded	Source not recorded
Status	accepted	No source recorded	Source not recorded
Year	1949	No source recorded	Source not recorded
Descriptive
Observations	C. & E. Canada to NC. & NE. U.S.A.	No source recorded	Source not recorded
Morphology
Average height	960 cm	960 cm · TRY Plant Trait Database · Measured · 10 observations · 2026-10-09 TRY 7.0 datasets 68, 92, 500, 909	Sourced
Biological type	empty	nanophanerophyte · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 500	Not on the record
Flower color	empty	yellow · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Flower conspicuous	false	No source recorded	Source not recorded
Foliage color	empty	green · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Foliage texture	coarse	coarse · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Sourced
Fruit color	empty	brown · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Fruit conspicuous	false	No source recorded	Source not recorded
Growth form	Thicket Forming	No source recorded	Source not recorded
Growth habit	Tree, Shrub	No source recorded	Source not recorded
Growth rate	Rapid	Moderate · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Differs from sources
Maximum height	1460 cm	1460 cm · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 68, 92, 500, 909	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 28, 92	Sourced
Ecology
Nitrogen fixation	High	High · TRY Plant Trait Database · Measured · 5 observations · 2026-10-09 TRY 7.0 datasets 20, 57, 71, 92, 94	Sourced
Ph maximum	pH 7	No source recorded	Source not recorded
Ph minimum	pH 5	No source recorded	Source not recorded
Cultivation
Minimum root depth	empty	61 cm · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Usda legacy
C n ratio	empty	18 · TRY Plant Trait Database · Measured · 5 observations · 2026-10-09 TRY 7.0 datasets 981	Not on the record
Other
Human usage type	—	coppice_potential, nursery_stock · TRY Plant Trait Database · Reported · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Salt tolerance	—	None · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Shade tolerance	—	Intermediate · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record

Alnus incana subsp. rugosa (Du Roi) R.T.Clausen, 1949 29% complete

No common name

Data sources

Alnus incana subsp. rugosa (Du Roi) R.T.Clausen, 1949 29% complete

No common name

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

Data sources