Data sources

Each value Trefle shows for Viola sororia, 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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Sourced4 Source not recorded8 Not on the record8 Sources: TRY Plant Trait Database

Field	Shown	What the sources say
Core
Author	Willd.	No source recorded	Source not recorded
Bibliography	Hort. Berol. 1: 72 (1806)	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	1806	No source recorded	Source not recorded
Descriptive
Common name	Violet	No source recorded	Source not recorded
Observations	Canada to U.S.A. and E. Mexico	No source recorded	Source not recorded
Morphology
Average height	14 cm	14 cm · TRY Plant Trait Database · Measured · 14 observations · 2026-10-09 TRY 7.0 datasets 66, 92, 517, 925	Sourced
Biological type	hemicryptophyte	hemicryptophyte · TRY Plant Trait Database · Measured · 165 observations · 2026-10-09 TRY 7.0 datasets 925	Sourced
Flower color	empty	purple · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Foliage color	empty	green · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Foliage texture	empty	medium · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Fruit color	empty	brown · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Growth rate	empty	Moderate · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Phenology
Duration	annual, perennial	annual, perennial · TRY Plant Trait Database · Measured · 167 observations · 2026-10-09 TRY 7.0 datasets 92, 460, 925	Sourced
Cultivation
Minimum root depth	11 cm	11 cm · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 92, 517	Sourced
Other
Human usage type	—	nursery_stock · 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	—	Intermediate · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record

Viola sororia Willd., 1806 14% complete

Violet

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Data sources