Data sources

Each value Trefle shows for Senegalia nigrescens, 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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Sourced4 Source not recorded9 Not on the record4 Sources: TRY Plant Trait Database

Field	Shown	What the sources say
Core
Author	(Oliv.) P.J.H.Hurter	No source recorded	Source not recorded
Bibliography	D.J.Mabberley, Plant-book, ed. 3: 1021 (2008)	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	2008	No source recorded	Source not recorded
Descriptive
Common name	Knobthorn	No source recorded	Source not recorded
Observations	Tanzania to S. Africa	No source recorded	Source not recorded
Morphology
Average height	800 cm	800 cm · TRY Plant Trait Database · Measured · 43 observations · 2026-10-09 TRY 7.0 datasets 47, 60, 873	Sourced
Biological type	empty	phanerophyte · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 350	Not on the record
Fruit shape	empty	legume · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 350	Not on the record
Maximum height	empty	3000 cm · TRY Plant Trait Database · Measured · 1 observation · 2026-10-09 TRY 7.0 datasets 47, 60, 873	Not on the record
Vegetable	false	No source recorded	Source not recorded
Phenology
Duration	perennial	perennial · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 818	Sourced
Ecology
Nitrogen fixation	High	High · TRY Plant Trait Database · Measured · 24 observations · 2026-10-09 TRY 7.0 datasets 20, 47, 57, 130, 444	Sourced
Cultivation
Minimum root depth	80 cm	80 cm · TRY Plant Trait Database · Measured · 3 observations · 2026-10-09 TRY 7.0 datasets 432	Sourced
Usda legacy
C n ratio	empty	16.8 · TRY Plant Trait Database · Measured · 6 observations · 2026-10-09 TRY 7.0 datasets 47, 412	Not on the record

Senegalia nigrescens (Oliv.) P.J.H.Hurter, 2008 16% complete

Knobthorn

.fa-secondary{opacity:.4} Data sources

Data sources