Data sources

Each value Trefle shows for Equisetum arvense, 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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Sourced18 Differs from sources1 Source not recorded11 Not on the record6 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.: 1061 (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	Common horsetail	No source recorded	Source not recorded
Observations	Subarctic & Temp. Northern Hemisphere	No source recorded	Source not recorded
Morphology
Average height	25 cm	25 cm · TRY Plant Trait Database · Measured · 111 observations · 2026-10-09 TRY 7.0 datasets 25, 45, 50, 66, 88, 92, 116, 164, 178, 203, 468, 555, 559, 608, 617, 655, 863, 866, 897, 898, 918, 925, 941	Sourced
Biological type	geophyte	geophyte · TRY Plant Trait Database · Measured · 131 observations · 2026-10-09 TRY 7.0 datasets 4, 71, 164, 174, 175, 178, 203, 559, 655, 918, 925	Sourced
Flower color	empty	green · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Not on the record
Flower conspicuous	false	No source recorded	Source not recorded
Foliage color	green	green · TRY Plant Trait Database · Measured · 9 observations · 2026-10-09 TRY 7.0 datasets 92, 443, 879	Sourced
Foliage texture	coarse	fine · TRY Plant Trait Database · Measured · 5 observations · 2026-10-09 TRY 7.0 datasets 4, 71, 92, 443, 879	Differs from sources
Fruit color	green	green · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Sourced
Fruit conspicuous	false	No source recorded	Source not recorded
Growth form	Rhizomatous	Rhizomatous · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	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
Growth rate	Rapid	Rapid · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 92	Sourced
Maximum height	50 cm	50 cm · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 25, 45, 50, 66, 88, 92, 116, 164, 178, 203, 468, 555, 559, 608, 617, 655, 863, 866, 897, 898, 918, 925, 941	Sourced
Vegetable	false	No source recorded	Source not recorded
Phenology
Bloom months	mar, apr, may	mar, apr, may · TRY Plant Trait Database · Measured · 6 observations · 2026-10-20 TRY 7.0 datasets 4, 45, 174, 203 1 earlier or rejected value Superseded jan, mar, may · TRY Plant Trait Database · Measured · 6 observations · 2026-10-09 TRY 7.0 datasets 4, 45, 174, 203	Sourced
Duration	perennial	perennial · TRY Plant Trait Database · Measured · 141 observations · 2026-10-09 TRY 7.0 datasets 4, 25, 71, 92, 164, 175, 178, 203, 432, 443, 559, 818, 879, 882, 918, 925	Sourced
Ecology
Atmospheric humidity	4 / 9 · moderately dry air	4 / 9 · moderately dry air · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Ground humidity	6 / 12 · moist (meso-hygrophilous)	6 / 12 · moist (meso-hygrophilous) · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 178, 203, 489	Sourced
Light	7 / 9 · half-light to light	7 / 9 · half-light to light · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 178, 489	Sourced
Ph maximum	pH 7	pH 7 · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Ph minimum	pH 4	pH 4 · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Soil nutriments	6 / 9 · rather rich (meso-eutrophic)	6 / 9 · rather rich (meso-eutrophic) · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 178, 489	Sourced
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 174, 178, 242	Sourced
Cultivation
Minimum root depth	22 cm	22 cm · TRY Plant Trait Database · Measured · 23 observations · 2026-10-09 TRY 7.0 datasets 73, 92, 432, 559, 608, 818, 898	Sourced
Usda legacy
C n ratio	empty	19 · TRY Plant Trait Database · Measured · 9 observations · 2026-10-09 TRY 7.0 datasets 88, 412, 617, 931, 941	Not on the record
Other
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
Soil ph indicator	—	6 · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 178, 203, 489	Not on the record
Temperature indicator	—	5 · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 203, 489	Not on the record

Equisetum arvense L., 1753 52% complete

Common horsetail

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Data sources