Data sources

Each value Trefle shows for Populus nigra, 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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Sourced21 Differs from sources1 Source not recorded11 Not on the record9 Sources: TRY Plant Trait Database, Earlier Trefle data

Field	Shown	What the sources say
Core
Author	L.	No source recorded	Source not recorded
Bibliography	Sp. Pl.: 1034 (1753)	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	1753	No source recorded	Source not recorded
Descriptive
Common name	Lombardy poplar	No source recorded	Source not recorded
Observations	Europe to Medit. and Xinjiang	No source recorded	Source not recorded
Morphology
Average height	2100 cm	2100 cm · TRY Plant Trait Database · Measured · 85 observations · 2026-10-09 TRY 7.0 datasets 25, 68, 86, 90, 92, 174, 175, 178, 191, 214, 241, 500, 673, 685, 873, 880, 882, 918	Sourced
Biological type	phanerophyte	phanerophyte · TRY Plant Trait Database · Measured · 7 observations · 2026-10-09 TRY 7.0 datasets 4, 25, 71, 174, 175, 178, 500, 918	Sourced
Flower color	purple	purple · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 4, 92	Sourced
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	medium	medium · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 4, 92	Sourced
Fruit color	empty	white · 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
Fruit shape	capsule	capsule · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09 TRY 7.0 datasets 4, 882	Sourced
Growth form	Multiple Stem	Multiple Stem · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Growth habit	Tree	Tree · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Growth rate	Rapid	Rapid · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Sourced
Maximum height	3000 cm	3000 cm · TRY Plant Trait Database · Measured · 5 observations · 2026-10-09 TRY 7.0 datasets 25, 68, 86, 90, 92, 174, 175, 178, 191, 214, 241, 500, 673, 685, 873, 880, 882, 918	Sourced
Sexuality	dioecious	dioecious · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09 TRY 7.0 datasets 4, 365	Sourced
Vegetable	false	No source recorded	Source not recorded
Phenology
Bloom months	mar, apr	mar, apr · TRY Plant Trait Database · Measured · 2 observations · 2026-10-20 TRY 7.0 datasets 4, 174 1 earlier or rejected value Superseded jan, apr · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 4, 174	Sourced
Duration	perennial	perennial · TRY Plant Trait Database · Measured · 21 observations · 2026-10-09 TRY 7.0 datasets 4, 25, 71, 86, 92, 178, 365, 460, 759, 818, 882, 918	Sourced
Ecology
Atmospheric humidity	8 / 9 · very humid air	8 / 9 · very humid air · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Ground humidity	empty	8 / 12 · very wet, flooded several months a year (hydrophilous) · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 178	Not on the record
Light	8 / 9 · light	6 / 9 · half-shade to half-light · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 178, 489	Differs from sources
Nitrogen fixation	None	None · TRY Plant Trait Database · Measured · 13 observations · 2026-10-09 TRY 7.0 datasets 37, 71, 89, 110, 444, 445, 822	Sourced
Ph maximum	pH 8.5	pH 8.5 · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Ph minimum	pH 5	pH 5 · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Soil nutriments	7 / 9 · rich (eutrophic)	7 / 9 · rich (eutrophic) · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 178	Sourced
Soil salinity	0 / 9 · absent from saline soils	0 / 9 · absent from saline soils · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09 TRY 7.0 datasets 178, 242, 489	Sourced
Cultivation
Minimum root depth	138 cm	138 cm · TRY Plant Trait Database · Measured · 6 observations · 2026-10-09 TRY 7.0 datasets 92, 818, 898	Sourced
Planting description	""	"" · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Planting sowing description	""	"" · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Usda legacy
C n ratio	empty	18.7 · TRY Plant Trait Database · Measured · 6 observations · 2026-10-09 TRY 7.0 datasets 90, 412	Not on the record
Other
Human usage type	—	coppice_potential, fuelwood, medical, nursery_stock, other, pulpwood, timber · TRY Plant Trait Database · Reported · 1 observation · 2026-10-09 TRY 7.0 datasets 68, 92	Not on the record
Salt tolerance	—	Low · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Shade tolerance	—	None · TRY Plant Trait Database · Measured · 5 observations · 2026-10-09 TRY 7.0 datasets 92, 174, 191	Not on the record
Soil ph indicator	—	7 · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 178	Not on the record
Temperature indicator	—	6 · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 242	Not on the record

Populus nigra L., 1753 54% complete

Lombardy poplar

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Data sources