Data sources

Each value Trefle shows for Pilosella officinarum, 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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Sourced15 Differs from sources1 Source not recorded10 Not on the record5 Sources: TRY Plant Trait Database, Earlier Trefle data

Field	Shown	What the sources say
Core
Author	Vaill.	No source recorded	Source not recorded
Bibliography	Königl. Akad. Wiss. Paris Anat. Abh. 5: 703 (1754)	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	1754	No source recorded	Source not recorded
Descriptive
Common name	Mouse-ear hawkweed	No source recorded	Source not recorded
Family common name	Aster family	No source recorded	Source not recorded
Observations	Europe to Siberia and Iran	No source recorded	Source not recorded
Morphology
Average height	4 cm	4 cm · TRY Plant Trait Database · Measured · 99 observations · 2026-10-09 TRY 7.0 datasets 25, 28, 37, 45, 50, 65, 76, 86, 115, 116, 161, 164, 174, 178, 251, 310, 320, 356, 366, 468, 519, 536, 882, 897	Sourced
Biological type	hemicryptophyte	hemicryptophyte · TRY Plant Trait Database · Measured · 45 observations · 2026-10-09 TRY 7.0 datasets 4, 25, 71, 161, 164, 174, 175, 178, 203, 220, 264, 500, 580, 918	Sourced
Flower color	yellow	yellow · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 4	Sourced
Foliage texture	medium	medium · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 4, 71	Sourced
Fruit color	black	black · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 882	Sourced
Fruit shape	achene	achene · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 4, 882	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
Maximum height	4 cm	3.75 cm · TRY Plant Trait Database · Measured · 8 observations · 2026-10-09 TRY 7.0 datasets 25, 28, 37, 45, 50, 65, 76, 86, 115, 116, 161, 164, 174, 178, 251, 310, 320, 356, 366, 468, 519, 536, 882, 897	Differs from sources
Sexuality	hermaphrodite	hermaphrodite · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 4	Sourced
Vegetable	false	No source recorded	Source not recorded
Phenology
Bloom months	may, jun	may, jun · TRY Plant Trait Database · Measured · 9 observations · 2026-10-09 TRY 7.0 datasets 4, 45, 115, 203, 264	Sourced
Duration	perennial	perennial · TRY Plant Trait Database · Measured · 31 observations · 2026-10-09 TRY 7.0 datasets 4, 25, 28, 65, 71, 86, 110, 164, 175, 178, 203, 264, 460, 818, 882, 918	Sourced
Ecology
Ground humidity	4 / 12 · moderately dry (meso-xerophilous)	4 / 12 · moderately dry (meso-xerophilous) · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 178, 203	Sourced
Light	8 / 9 · light	8 / 9 · light · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 178, 489	Sourced
Nitrogen fixation	None	None · TRY Plant Trait Database · Measured · 18 observations · 2026-10-09 TRY 7.0 datasets 37, 71, 89, 110, 444	Sourced
Soil nutriments	empty	2 / 9 · very poor (peroligotrophic) · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 178	Not on the record
Soil salinity	0 / 9 · absent from saline soils	0 / 9 · absent from saline soils · TRY Plant Trait Database · Measured · 5 observations · 2026-10-09 TRY 7.0 datasets 174, 178, 242, 489	Sourced
Cultivation
Minimum root depth	48 cm	48 cm · TRY Plant Trait Database · Measured · 5 observations · 2026-10-09 TRY 7.0 datasets 339, 474, 818, 898	Sourced
Usda legacy
C n ratio	empty	27 · TRY Plant Trait Database · Measured · 14 observations · 2026-10-09 TRY 7.0 datasets 50, 76, 88, 228, 412, 468	Not on the record
Other
Propagation method	—	seed, vegetative · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 174	Not on the record
Shade tolerance	—	None · TRY Plant Trait Database · Measured · 16 observations · 2026-10-09 TRY 7.0 datasets 174	Not on the record
Soil ph indicator	—	6 · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 178, 489	Not on the record

Pilosella officinarum Vaill., 1754 43% complete

Mouse-ear hawkweed

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Data sources