Xanthium spinosum L., 1753 41% complete

Clotweed

Sp. Pl.: 987 (1753)

Data sources

Each value Trefle shows for Xanthium spinosum, 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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Sourced11 Differs from sources4 Source not recorded10 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.: 987 (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 Clotweed No source recorded
Source not recorded
Family common name Aster family No source recorded
Source not recorded
Observations C. & E. Canada to Mexico, Peru to S. South America No source recorded
Source not recorded
Morphology
Average height 61 cm
  • 61.25 cm · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09
    TRY 7.0 datasets 25, 164, 500, 882, 918
Differs from sources
Biological type therophyte
  • therophyte · TRY Plant Trait Database · Measured · 7 observations · 2026-10-09
    TRY 7.0 datasets 4, 25, 71, 164, 500, 918
Sourced
Flower color green Sourced
Foliage texture empty Not on the record
Fruit shape achene 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 100 cm
  • 100 cm · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09
    TRY 7.0 datasets 25, 164, 500, 882, 918
Sourced
Sexuality empty Not on the record
Vegetable false No source recorded
Source not recorded
Phenology
Bloom months aug, sep, oct
  • aug|sep|oct · Earlier Trefle data · Reported · 2026-10-19
    value present before provenance tracking (2022 import), no source recorded
Differs from sources
Duration annual Sourced
Fruit months empty
  • jan, feb, mar, apr, may, jun, jul, aug, sep, oct, nov, dec · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09
    TRY 7.0 datasets 882
Not on the record
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 empty
  • 4 / 12 · moderately dry (meso-xerophilous) · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09
    TRY 7.0 datasets 242
Not on the record
Light 8 / 9 · light Sourced
Nitrogen fixation None Sourced
Ph maximum pH 7
  • pH 7 · 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 6.5
  • pH 6.5 · 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 6 / 9 · rather rich (meso-eutrophic)
  • 7 / 9 · rich (eutrophic) · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09
    TRY 7.0 datasets 242, 489
Differs from sources
Soil salinity 0 / 9 · absent from saline soils
  • 1 / 9 · barely saline (hyperoligohaline) · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09
    TRY 7.0 datasets 242, 489
Differs from sources
Other
Soil ph indicator — Not on the record
Temperature indicator — Not on the record