Data sources

Each value Trefle shows for Pseudotsuga menziesii var. menziesii, 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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Sourced10 Source not recorded7 Not on the record6 Sources: TRY Plant Trait Database, Earlier Trefle data, GBIF

Field	Shown	What the sources say
Core
Bibliography	Unknown	Unknown · GBIF · Reported · 2026-09-05 1 earlier or rejected value Superseded Unknown · GBIF · Reported · 2026-09-05	Sourced
Phylum	Tracheophyta	Tracheophyta · GBIF · Reported · 2026-09-05	Sourced
Rank	var	No source recorded	Source not recorded
Status	accepted	No source recorded	Source not recorded
Year	1950	No source recorded	Source not recorded
Descriptive
Common name	Coast douglas-fir	No source recorded	Source not recorded
Family common name	Pine family	No source recorded	Source not recorded
Observations	SE. Alaska to W. U.S.A.	No source recorded	Source not recorded
Morphology
Average height	3450 cm	3450 cm · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 55, 68, 882	Sourced
Foliage texture	coarse	coarse · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Fruit color	empty	brown, red, yellow · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 882	Not on the record
Fruit shape	empty	strobilus · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 882	Not on the record
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 · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Maximum height	empty	4000 cm · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 55, 68, 882	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 882	Sourced
Ecology
Nitrogen fixation	empty	None · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 55	Not on the record
Ph maximum	pH 7.5	pH 7.5 · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Ph minimum	pH 5.5	pH 5.5 · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Cultivation
Minimum root depth	empty	140 cm · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 432	Not on the record
Usda legacy
C n ratio	empty	53.5 · TRY Plant Trait Database · Measured · 20 observations · 2026-10-09 TRY 7.0 datasets 981	Not on the record

Pseudotsuga menziesii var. menziesii 1950 25% complete

Coast douglas-fir

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

Data sources