Data sources

Each value Trefle shows for Madia gracilis, 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 Source not recorded10 Not on the record2 Sources: TRY Plant Trait Database, Earlier Trefle data

Field	Shown	What the sources say
Core
Author	(Sm.) D.D.Keck & J.C.Clausen ex Applegate	No source recorded	Source not recorded
Bibliography	Amer. Midl. Naturalist 19: 364 (1938)	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	1938	No source recorded	Source not recorded
Descriptive
Common name	Slender tarweed	No source recorded	Source not recorded
Family common name	Aster family	No source recorded	Source not recorded
Observations	W. Canada to Mexico (Baja California Norte)	No source recorded	Source not recorded
Morphology
Average height	empty	48 cm · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 818	Not on the record
Growth habit	Forb/herb	Forb/herb · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Vegetable	false	No source recorded	Source not recorded
Phenology
Duration	annual	annual · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 28, 818	Sourced
Cultivation
Minimum root depth	empty	17 cm · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 818	Not on the record

Madia gracilis (Sm.) D.D.Keck & J.C.Clausen ex Applegate, 1938 14% complete

Slender tarweed

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

Data sources