Data sources

Each value Trefle shows for Silphium integrifolium, 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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Sourced6 Differs from sources1 Source not recorded10 Not on the record1 Sources: TRY Plant Trait Database, Earlier Trefle data

Field	Shown	What the sources say
Core
Author	Michx.	No source recorded	Source not recorded
Bibliography	Fl. Bor.-Amer. 2: 146 (1803)	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	1803	No source recorded	Source not recorded
Descriptive
Common name	Whole-leaf rosinweed	No source recorded	Source not recorded
Family common name	Aster family	No source recorded	Source not recorded
Observations	SE. Canada to N., C. & E. U.S.A.	No source recorded	Source not recorded
Morphology
Average height	130 cm	130.47 cm · TRY Plant Trait Database · Measured · 36 observations · 2026-10-09 TRY 7.0 datasets 20, 415, 664, 818, 866, 925	Differs from sources
Biological type	hemicryptophyte	hemicryptophyte · TRY Plant Trait Database · Measured · 228 observations · 2026-10-09 TRY 7.0 datasets 925	Sourced
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
Bloom months	jun, jul	jun, jul · TRY Plant Trait Database · Measured · 53 observations · 2026-10-09 TRY 7.0 datasets 163, 415	Sourced
Duration	perennial	perennial · TRY Plant Trait Database · Measured · 233 observations · 2026-10-09 TRY 7.0 datasets 110, 432, 759, 818, 925	Sourced
Ecology
Nitrogen fixation	None	None · TRY Plant Trait Database · Measured · 9 observations · 2026-10-09 TRY 7.0 datasets 20, 57, 67, 96, 444, 822	Sourced
Cultivation
Minimum root depth	170 cm	170 cm · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 432, 818	Sourced
Usda legacy
C n ratio	empty	26 · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09 TRY 7.0 datasets 412, 570	Not on the record

Silphium integrifolium Michx., 1803 25% complete

Whole-leaf rosinweed

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

Data sources