Data sources

Each value Trefle shows for Ilex aquifolium, 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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Sourced16 Differs from sources1 Source not recorded9 Not on the record7 Sources: TRY Plant Trait Database, Earlier Trefle data

Field	Shown	What the sources say
Core
Author	L.	No source recorded	Source not recorded
Bibliography	Sp. Pl.: 125 (1753)	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	1753	No source recorded	Source not recorded
Descriptive
Common name	English holly	No source recorded	Source not recorded
Observations	Europe, NW. Africa	No source recorded	Source not recorded
Morphology
Average height	745 cm	745 cm · TRY Plant Trait Database · Measured · 44 observations · 2026-10-09 TRY 7.0 datasets 25, 37, 68, 86, 88, 164, 174, 175, 178, 241, 474, 685, 708, 818, 873, 882, 898	Sourced
Biological type	phanerophyte	phanerophyte · TRY Plant Trait Database · Measured · 12 observations · 2026-10-09 TRY 7.0 datasets 4, 25, 71, 164, 174, 175, 178, 500, 918	Sourced
Flower color	white, magenta	magenta, white · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09 TRY 7.0 datasets 4, 882	Sourced
Foliage texture	empty	coarse · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 4	Not on the record
Fruit color	red	red · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 882	Sourced
Fruit shape	drupe	drupe · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 4, 882	Sourced
Growth habit	Shrub, Tree	Shrub, Tree · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Maximum height	1000 cm	1000 cm · TRY Plant Trait Database · Measured · 7 observations · 2026-10-09 TRY 7.0 datasets 25, 37, 68, 86, 88, 164, 174, 175, 178, 241, 474, 685, 708, 818, 873, 882, 898	Sourced
Vegetable	false	No source recorded	Source not recorded
Phenology
Bloom months	may	may · TRY Plant Trait Database · Measured · 8 observations · 2026-10-20 TRY 7.0 datasets 4, 37, 174 1 earlier or rejected value Superseded jan, may · TRY Plant Trait Database · Measured · 8 observations · 2026-10-09 TRY 7.0 datasets 4, 37, 174	Sourced
Duration	perennial	perennial · TRY Plant Trait Database · Measured · 16 observations · 2026-10-09 TRY 7.0 datasets 4, 25, 28, 37, 86, 178, 460, 818, 882, 918	Sourced
Ecology
Atmospheric humidity	5 / 9 · medium air humidity	5 / 9 · medium air humidity · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Ground humidity	empty	5 / 12 · fresh, never flooded (mesohydric) · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 178	Not on the record
Light	5 / 9 · half-shade	5 / 9 · half-shade · 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 · 16 observations · 2026-10-09 TRY 7.0 datasets 20, 37, 57, 71, 89, 110, 444, 445	Sourced
Ph maximum	pH 5	pH 5 · Earlier Trefle data · Inferred · 2026-10-19 value present before provenance tracking (2022 import), no source recorded derived from a Baseflor soil reaction class by the 2022 import, a class not a measurement	Sourced
Ph minimum	pH 4.5	pH 4.5 · Earlier Trefle data · Inferred · 2026-10-19 value present before provenance tracking (2022 import), no source recorded derived from a Baseflor soil reaction class by the 2022 import, a class not a measurement	Sourced
Soil nutriments	4 / 9 · rather poor (meso-oligotrophic)	5 / 9 · intermediate (mesotrophic) · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 178	Differs from sources
Soil salinity	0 / 9 · absent from saline soils	0 / 9 · absent from saline soils · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 178, 242, 489	Sourced
Cultivation
Minimum root depth	58 cm	58 cm · TRY Plant Trait Database · Measured · 7 observations · 2026-10-09 TRY 7.0 datasets 37, 818, 898	Sourced
Usda legacy
C n ratio	empty	24.2 · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 88	Not on the record
Other
Human usage type	—	medical, ornamental, other, timber · TRY Plant Trait Database · Reported · 1 observation · 2026-10-09 TRY 7.0 datasets 68	Not on the record
Propagation method	—	seed · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 174	Not on the record
Shade tolerance	—	None · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 174	Not on the record
Soil ph indicator	—	5 · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 178, 242	Not on the record

Ilex aquifolium L., 1753 43% complete

English holly

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Data sources