Acacia nigrescens Oliv.

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Acacia nigrescens

Photo: Bart Wursten
Victoria Falls

Acacia nigrescens

Photo: Petra Ballings
Rd to Chisumbanje, Save Valley

Acacia nigrescens

Photo: Petra Ballings
Rd to Chisumbanje, Save Valley

Acacia nigrescens

Photo: Petra Ballings
Rd to Chisumbanje, Save Valley

Acacia nigrescens

Photo: Petra Ballings
Rd to Chisumbanje, Save Valley

Acacia nigrescens

Photo: Petra Ballings
Rd to Chisumbanje, Save Valley

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Species details: Click on each item to see an explanation of that item (Note: opens a new window)

Synonyms: Acacia pallens (Benth.) Rolfe
Senegalia nigrescens (Oliv.) P.J.H. Hurter
Common names: Chinanga (Shona) Gakaunga (Shona) Isinanga (Ndebele) Katopa (Ndebele) Knob thorn (English) Micaia (Portuguese) Muguhunga (Shona) Mukaya (Shona) Mukuu (Ndebele) Munanga (Shona) Mupumbu (Ndebele) Umkhayamhlophe (Ndebele)
Description: Medium to large, deciduous tree. Bark dark brown to almost black. The trunk and main branches often covered in numerous knobs,tipped with a hooked prickle. Thorns strongly hooked, in pairs at the nodes. Leaves with 2-3 pairs of pinna, each with only 1-2 pairs of oval to near-circular leaflets. Flowers in long spikes, white, sweetly scented, appearing in great profusion before the leaves. Pod straight, pointed at the apex, dark brown, dehiscent. Note: the leaflets are the largest of any Acacia. See A. burkei and A. mellifera for comparison.
Notes:
Derivation of specific name: nigrescens: 'becoming black', thought to refer to either the colour of the thorns or the pods
Flowering time:Aug - Oct
Worldwide distribution: From Tanzania to KwaZulu-Natal and West to Botswana and the Caprivi of Namibia.
Growth form(s): Tree.
Insects (whose larvae eat this species):
Spot characters: Display spot characters for this species
Image last updated: Sunday 11 March 2007
Literature:

Brenan, J.P.M. (1970). Mimosoideae Flora Zambesiaca 3(1) Pages 69 - 71.

Coates Palgrave, K. et al. (1956). Trees of Central Africa National Publications Trust, Salisbury. Pages 250 - 253. (Includes a picture).

Curtis, B.A. & Mannheimer, C.A. (2005). Tree Atlas of Namibia National Botanic Research Institute, Windhoek Pages 168 - 169. (Includes a picture).

Drummond, R.B. (1972). A list of Rhodesian Legumes. Kirkia 8(2) Page 214.

Drummond, R.B. (1975). A list of trees, shrubs and woody climbers indigenous or naturalised in Rhodesia. Kirkia 10(1) Page 241.

Heath, A. & Heath, R. (2009). Field Guide to the Plants of Northern Botswana including the Okavango Delta Kew Publishing Page 258. (Includes a picture).

Roodt, V. (1998). Trees and Shrubs of the Okavango Delta Shell Field Guide Series: Part I Shell Oil Botswana, Gaberone. Pages 170 - 173. (Includes a picture).

Setshogo, M.P. (2005). Preliminary checklist of the plants of Botswana. Sabonet Report no. 37. Sabonet, Pretoria and Gaborone Page 60.

Steedman, E.C. (1933). Some Trees, Shrubs and Lianes of Southern Rhodesia. Pages 13 - 14.

Timberlake, J., Fagg, C. & Barnes, R. (1999). Field Guide to the Acacias of Zimbabwe CBC Publishing, Harare Pages 90 - 930. (Includes a picture).

Timberlake, J.R. & Childes, S.L. (2004). Biodiversity of the Four Corners Area: Technical Reviews Volume Two (Chapter 5-15) Appendix 5-1: Plant Checklist Occasional Publications in Biodiversity 15 Page 210.

Other sources of information about Acacia nigrescens:

Our websites:

Flora of Botswana: Acacia nigrescens
Flora of Caprivi: Acacia nigrescens
Flora of Malawi: Acacia nigrescens
Flora of Mozambique: Acacia nigrescens
Flora of Zambia: Acacia nigrescens
Flora of Zimbabwe: Acacia nigrescens

External websites:

African Plant Database: Acacia nigrescens
Biodiversity Explorer (Biodiversity of southern Africa): Acacia nigrescens
EOL (Encyclopedia of Life): Acacia nigrescens
ePIC (electronic Plant Information Center): Acacia nigrescens
Flora Zambesiaca web site: Acacia nigrescens
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network) taxonomy for plants report for Acacia nigrescens
IPNI (International Plant Names Index): Acacia nigrescens
Ispot Southern Africa : Acacia nigrescens
JSTOR Plant Science: Acacia nigrescens
Kew Herbarium catalogue: Acacia nigrescens
Mansfeld World Database of Agricultural and Horticultural Crops: Acacia nigrescens
Tropicos: Acacia nigrescens
West African Plants database: Acacia nigrescens


Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-16

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2016). Flora of Zimbabwe: Cultivated Plants: Species information: Acacia nigrescens.
http://www.zimbabweflora.co.zw/cult/species.php?species_id=126070, retrieved 28 June 2016

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