Data sources

Each value Trefle shows for Vicia tetrasperma, 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 sources3 Source not recorded9 Not on the record5 Sources: TRY Plant Trait Database, Earlier Trefle data

Field	Shown	What the sources say
Core
Author	(L.) Schreb.	No source recorded	Source not recorded
Bibliography	Spic. Fl. Lips.: 26 (1771)	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	1771	No source recorded	Source not recorded
Descriptive
Common name	Four-seed vetch	No source recorded	Source not recorded
Observations	Macaronesia, Temp. Eurasia to Indian Subcontinent, N. Africa	No source recorded	Source not recorded
Morphology
Average height	50 cm	50 cm · TRY Plant Trait Database · Measured · 27 observations · 2026-10-09 TRY 7.0 datasets 25, 108, 115, 116, 164, 174, 178, 203, 500, 654, 918	Sourced
Biological type	therophyte	therophyte · TRY Plant Trait Database · Measured · 12 observations · 2026-10-09 TRY 7.0 datasets 4, 25, 71, 164, 174, 175, 178, 203, 500, 918	Sourced
Flower color	blue	magenta · TRY Plant Trait Database · Measured · 2 observations · 2026-10-20 TRY 7.0 datasets 4, 882 1 earlier or rejected value Superseded magenta · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 4, 882	Differs from sources
Foliage texture	medium	medium · TRY Plant Trait Database · Measured · 2 observations · 2026-10-20 TRY 7.0 datasets 4, 71 1 earlier or rejected value Superseded medium · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 4, 71	Sourced
Fruit color	brown	brown · TRY Plant Trait Database · Measured · 3 observations · 2026-10-20 TRY 7.0 datasets 882 1 earlier or rejected value Superseded brown · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 882	Sourced
Fruit shape	legume	legume · TRY Plant Trait Database · Measured · 4 observations · 2026-10-20 TRY 7.0 datasets 4, 882 1 earlier or rejected value Superseded legume · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09 TRY 7.0 datasets 4, 882	Sourced
Growth habit	Vine, Forb/herb	Vine, Forb/herb · Earlier Trefle data · Reported · 2026-10-19 value present before provenance tracking (2022 import), no source recorded	Sourced
Maximum height	60 cm	60 cm · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 25, 108, 115, 116, 164, 174, 178, 203, 500, 654, 918	Sourced
Sexuality	empty	hermaphrodite · TRY Plant Trait Database · Measured · 1 observation · 2026-10-20 TRY 7.0 datasets 4 1 earlier or rejected value Superseded hermaphrodite · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 4	Not on the record
Vegetable	false	No source recorded	Source not recorded
Phenology
Bloom months	may, jun, jul	may, jun, jul · TRY Plant Trait Database · Measured · 6 observations · 2026-10-20 TRY 7.0 datasets 4, 45, 115, 174, 203 1 earlier or rejected value Superseded jan, may, jun, jul · TRY Plant Trait Database · Measured · 6 observations · 2026-10-09 TRY 7.0 datasets 4, 45, 115, 174, 203	Sourced
Duration	annual	annual · TRY Plant Trait Database · Measured · 22 observations · 2026-10-09 TRY 7.0 datasets 4, 25, 71, 164, 175, 178, 203, 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	5 / 12 · fresh, never flooded (mesohydric)	5 / 12 · fresh, never flooded (mesohydric) · TRY Plant Trait Database · Measured · 3 observations · 2026-10-20 TRY 7.0 datasets 178, 203, 489 1 earlier or rejected value Superseded 5 / 12 · fresh, never flooded (mesohydric) · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 178, 203, 489	Sourced
Light	6 / 9 · half-shade to half-light	7 / 9 · half-light to light · TRY Plant Trait Database · Measured · 1 observation · 2026-10-20 TRY 7.0 datasets 178 1 earlier or rejected value Superseded 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	High	High · TRY Plant Trait Database · Measured · 7 observations · 2026-10-20 TRY 7.0 datasets 71, 444, 445 1 earlier or rejected value Superseded High · TRY Plant Trait Database · Measured · 7 observations · 2026-10-09 TRY 7.0 datasets 71, 444, 445	Sourced
Ph maximum	pH 5.5	pH 5.5 · 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 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
Soil nutriments	5 / 9 · intermediate (mesotrophic)	6 / 9 · rather rich (meso-eutrophic) · TRY Plant Trait Database · Measured · 2 observations · 2026-10-20 TRY 7.0 datasets 178, 242 1 earlier or rejected value Superseded 6 / 9 · rather rich (meso-eutrophic) · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 178, 242	Differs from sources
Soil salinity	0 / 9 · absent from saline soils	0 / 9 · absent from saline soils · TRY Plant Trait Database · Measured · 4 observations · 2026-10-20 TRY 7.0 datasets 174, 178, 242, 489 1 earlier or rejected value Superseded 0 / 9 · absent from saline soils · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09 TRY 7.0 datasets 174, 178, 242, 489	Sourced
Cultivation
Minimum root depth	49 cm	49 cm · TRY Plant Trait Database · Measured · 2 observations · 2026-10-20 TRY 7.0 datasets 818 1 earlier or rejected value Superseded 49 cm · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 818	Sourced
Other
Propagation method	—	seed · TRY Plant Trait Database · Measured · 1 observation · 2026-10-20 TRY 7.0 datasets 174 1 earlier or rejected value Superseded 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 · 4 observations · 2026-10-20 TRY 7.0 datasets 174 1 earlier or rejected value Superseded None · TRY Plant Trait Database · Measured · 4 observations · 2026-10-09 TRY 7.0 datasets 174	Not on the record
Soil ph indicator	—	6 · TRY Plant Trait Database · Measured · 2 observations · 2026-10-20 TRY 7.0 datasets 178, 203 1 earlier or rejected value Superseded 6 · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 178, 203	Not on the record
Temperature indicator	—	6 · TRY Plant Trait Database · Measured · 2 observations · 2026-10-20 TRY 7.0 datasets 203, 242 1 earlier or rejected value Superseded 6 · TRY Plant Trait Database · Measured · 2 observations · 2026-10-09 TRY 7.0 datasets 203, 242	Not on the record

Vicia tetrasperma (L.) Schreb., 1771 47% complete

Four-seed vetch

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Data sources