Wolffia arrhiza (L.) Horkel ex Wimm., 1857 31% complete

Rootless duckweed

Fl. Schles., ed. 3: 140 (1857)

Data sources

Each value Trefle shows for Wolffia arrhiza, 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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Sourced10 Differs from sources1 Source not recorded9 Not on the record8 Sources: TRY Plant Trait Database, Earlier Trefle data
Field Shown What the sources say
Core
Author (L.) Horkel ex Wimm. No source recorded
Source not recorded
Bibliography Fl. Schles., ed. 3: 140 (1857) 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 1857 No source recorded
Source not recorded
Descriptive
Common name Rootless duckweed No source recorded
Source not recorded
Observations Africa, Europe to N. India, S. Korea to Philippines No source recorded
Source not recorded
Morphology
Biological type hydrophyte
  • hydrophyte · TRY Plant Trait Database · Measured · 7 observations · 2026-10-09
    TRY 7.0 datasets 25, 71, 174, 178, 500, 918
Sourced
Edible part leaves
  • leaves · Earlier Trefle data · Reported · 2026-10-19
    value present before provenance tracking (2022 import), no source recorded
Sourced
Flower color green
  • green · Earlier Trefle data · Reported · 2026-10-19
    value present before provenance tracking (2022 import), no source recorded
Sourced
Foliage texture empty Not on the record
Growth habit Forb/herb
  • Forb/herb · Earlier Trefle data · Reported · 2026-10-19
    value present before provenance tracking (2022 import), no source recorded
Sourced
Sexuality empty Not on the record
Vegetable false No source recorded
Source not recorded
Phenology
Duration perennial Sourced
Ecology
Atmospheric humidity 9 / 9 · saturated air
  • 9 / 9 · saturated air · Earlier Trefle data · Reported · 2026-10-19
    value present before provenance tracking (2022 import), no source recorded
Sourced
Ground humidity empty
  • 11 / 12 · shallow or floating aquatic, 0 to 50 cm · TRY Plant Trait Database · Measured · 1 observation · 2026-10-20
    TRY 7.0 datasets 178
1 earlier or rejected value
  • Rejected 11 / 12 · shallow or floating aquatic, 0 to 50 cm · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09
    TRY 7.0 datasets 178
Not on the record
Light 8 / 9 · light
  • 7 / 9 · half-light to light · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09
    TRY 7.0 datasets 178
Differs from sources
Nitrogen fixation empty Not on the record
Ph maximum pH 7.5
  • pH 7.5 · 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 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
Soil nutriments 7 / 9 · rich (eutrophic)
  • 7 / 9 · rich (eutrophic) · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09
    TRY 7.0 datasets 178, 242
Sourced
Soil salinity 0 / 9 · absent from saline soils
  • 0 / 9 · absent from saline soils · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09
    TRY 7.0 datasets 178, 242
Sourced
Usda legacy
C n ratio empty Not on the record
Other
Shade tolerance — Not on the record
Soil ph indicator — Not on the record
Temperature indicator — Not on the record