Senegalia nigrescens

Plate 1 figs. a–h · 8 separate observations

Senegalia nigrescens, photographed by Margaret Burger — fig. b Margaret Burger, CC BY-SA 4.0 / obs. 139976172

Senegalia nigrescens, photographed by Tony Rebelo — fig. c Tony Rebelo, CC BY-SA 4.0 / obs. 140442319

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Native range 12 botanical countries

Native distribution of Senegalia nigrescens, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows.

Region	TDWG code	Continent
Angola	ANG	AFRICA
Botswana	BOT
Caprivi Strip	CPV
Eswatini	SWZ
KwaZulu-Natal	NAT
Malawi	MLW
Mozambique	MOZ
Namibia	NAM
Northern Provinces	TVL
Tanzania	TAN
Zambia	ZAM
Zimbabwe	ZIM

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Flowering 71 in flower of 131 examined

33%

89%

92%

Proportion of examined Senegalia nigrescens in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	0	4	too few examined
Feb	0	6	0%	0% to 39%
Mar	0	3	too few examined
Apr	0	5	0%	0% to 43%
May	1	12	8%	1% to 35%
Jun	0	5	0%	0% to 43%
Jul	2	6	33%	10% to 70%
Aug	56	63	89%	79% to 95%
Sep	11	12	92%	65% to 99%
Oct	1	3	too few examined
Nov	0	7	0%	0% to 35%
Dec	0	5	0%	0% to 43%

Peak flowering in Sep. Each bar is the share of Senegalia nigrescens observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 71 of 131 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 3 months have fewer than 5 examined observations, so no proportion is drawn for them. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

Also published as 9 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

Acacia brosigii Harms
Acacia nigrescens Oliv.
Acacia nigrescens var. pallens Benth.
Acacia pallens (Benth.) Rolfe
Acacia passargei Passarge
Acacia passargei Harms
Acacia perrottii Warb.
Acacia schliebenii Harms
Albizia lugardii N.E.Br.

Sourcesevery claim on this page

World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.