Data sources

Each value Trefle shows for Astragalus drummondii, 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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Sourced2 Differs from sources1 Source not recorded7 Not on the record1 Sources: TRY Plant Trait Database

Field	Shown	What the sources say
Core
Author	Douglas ex Hook.	No source recorded	Source not recorded
Bibliography	Fl. Bor.-Amer. 1: 153 (1831)	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	1831	No source recorded	Source not recorded
Descriptive
Observations	W. & C. Canada to WC. U.S.A.	No source recorded	Source not recorded
Morphology
Average height	23 cm	23.35 cm · TRY Plant Trait Database · Measured · 24 observations · 2026-10-09 TRY 7.0 datasets 296	Differs from sources
Phenology
Duration	perennial	perennial · TRY Plant Trait Database · Measured · 75 observations · 2026-10-09 TRY 7.0 datasets 296	Sourced
Ecology
Nitrogen fixation	High	High · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 444	Sourced
Usda legacy
C n ratio	empty	10.2 · TRY Plant Trait Database · Measured · 10 observations · 2026-10-09 TRY 7.0 datasets 296	Not on the record

Astragalus drummondii Douglas ex Hook., 1831 10% complete

No common name

Data sources

Astragalus drummondii Douglas ex Hook., 1831 10% complete

No common name

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

Data sources