Data sources

Each value Trefle shows for Larix occidentalis, 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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Sourced9 Differs from sources1 Source not recorded16 Not on the record4 Sources: TRY Plant Trait Database

Field	Shown	What the sources say
Core
Author	Nutt.	No source recorded	Source not recorded
Bibliography	N. Amer. Sylv. 2: 199 (1846)	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	1846	No source recorded	Source not recorded
Descriptive
Common name	Western larch	No source recorded	Source not recorded
Family common name	Pine family	No source recorded	Source not recorded
Observations	W. Canada to NW. U.S.A.	No source recorded	Source not recorded
Morphology
Average height	2275 cm	2275 cm · TRY Plant Trait Database · Measured · 58 observations · 2026-10-09 TRY 7.0 datasets 28, 68, 92, 241, 431, 484, 742, 873	Sourced
Flower color	red	red · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Sourced
Flower conspicuous	false	No source recorded	Source not recorded
Foliage color	yellow	green, yellow · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Differs from sources
Foliage texture	fine	fine · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Sourced
Fruit color	brown	brown · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Sourced
Fruit conspicuous	true	No source recorded	Source not recorded
Growth form	Single Stem	No source recorded	Source not recorded
Growth habit	Tree	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	5800 cm	5800 cm · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 28, 68, 92, 241, 431, 484, 742, 873	Sourced
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 28, 92, 818	Sourced
Ecology
Nitrogen fixation	None	None · TRY Plant Trait Database · Measured · 14 observations · 2026-10-09 TRY 7.0 datasets 57, 67, 89, 445	Sourced
Ph maximum	pH 7	No source recorded	Source not recorded
Ph minimum	pH 6	No source recorded	Source not recorded
Cultivation
Minimum root depth	40 cm	40 cm · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 92, 432	Sourced
Usda legacy
C n ratio	empty	30.4 · TRY Plant Trait Database · Measured · 8 observations · 2026-10-09 TRY 7.0 datasets 79	Not on the record
Other
Human usage type	—	fuelwood, lumber, nursery_stock, posts, pulpwood, veneer · 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	—	None · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record

Larix occidentalis Nutt., 1846 43% complete

Western larch

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Data sources