Data sources

Each value Trefle shows for Alnus incana subsp. tenuifolia, 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 Differs from sources2 Source not recorded12 Not on the record9 Sources: TRY Plant Trait Database, POWO / WCVP (Kew)

Field	Shown	What the sources say
Core
Author	(Nutt.) Breitung	(Nutt.) Breitung · POWO / WCVP (Kew) · Reported · 2026-10-11	Sourced
Bibliography	Amer. Midl. Naturalist 58:25. 1957	No source recorded	Source not recorded
Rank	ssp	No source recorded	Source not recorded
Status	accepted	No source recorded	Source not recorded
Year	1957	No source recorded	Source not recorded
Descriptive
Observations	Alaska to New Mexico	No source recorded	Source not recorded
Morphology
Average height	914 cm	914.4 cm · TRY Plant Trait Database · Measured · 7 observations · 2026-10-09 TRY 7.0 datasets 68, 92, 251	Differs from sources
Flower color	empty	purple · 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	medium · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Differs from sources
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	Rapid · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Sourced
Maximum height	empty	No source recorded 1 earlier or rejected value Rejected 850 cm · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 68, 92, 251 below the average height (914 cm) of the same record	Not on the record
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	empty	Medium · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
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	46 cm · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Other
Human usage type	—	fuelwood, medical · TRY Plant Trait Database · Reported · 1 observation · 2026-10-09 TRY 7.0 datasets 68, 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. tenuifolia (Nutt.) Breitung, 1957 27% complete

No common name

Data sources

Alnus incana subsp. tenuifolia (Nutt.) Breitung, 1957 27% complete

No common name

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

Data sources