Acacia welwitschii Oliv.
subsp. delagoensis (Harms) J.H. Ross & Brenan

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Acacia welwitschii subsp. delagoensis

Photo: Warren McCleland
Quissanga, Cabo Delgado.

Acacia welwitschii subsp. delagoensis

Photo: Warren McCleland
Quissanga, Cabo Delgado.

Acacia welwitschii subsp. delagoensis

Photo: Warren McCleland
Quissanga, Cabo Delgado.

Acacia welwitschii subsp. delagoensis

Photo: Bart Wursten
Sandforest loop, Gorongosa National Park.

Acacia welwitschii subsp. delagoensis

Photo: Bart Wursten
Sandforest loop, Gorongosa National Park.

Acacia welwitschii subsp. delagoensis

Photo: Bart Wursten
Sandforest loop, Gorongosa National Park.

Acacia welwitschii subsp. delagoensis

Photo: Bart Wursten
Sandforest loop, Gorongosa National Park.

Acacia welwitschii subsp. delagoensis

Photo: Bart Wursten
Sandforest loop, Gorongosa National Park.

Acacia welwitschii subsp. delagoensis

Photo: Bart Wursten
Sandforest loop, Gorongosa National Park.

Acacia welwitschii subsp. delagoensis

Photo: Bart Wursten
Sandforest loop, Gorongosa National Park.

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

Synonyms: Acacia delagoensis Harms
Senegalia welwitschii (Oliv.) Kyal. & Boatwr. subsp. delagoensis (Harms ex Burtt Davy) Kyal. & Boatwr.
Common names: Delagoa thorn (English)
Frequency: Local.
Status: Native
Description:
Small to medium-sized tree up to 15 m with a broad crown, ofteen branching from near the base; bark yellowish to grey-brown, rough; young branchlets hairless. Prickles paired just below the nodes, hooked downwards, grey or blackish, up to c. 6 mm long. Leaves bipinnate, sometimes with a gland between the top pair of pinnae; pinnae 2-5 pairs; leaflets 3-8 pairs, elliptic or broadly elliptic, sometimes somewhat ovate, 4-20 mm long, rounded and often slightly emarginate at the apex, nearly symmetrical at the base, hairless, with venation rather prominent beneath; petiole with a small to rather large gland. Flowers sessile or almost so, in spikes 3-13 cm long on peduncles 0-3 cm long, white, produced with the leaves. Calyx 1·5-1·75 mm long, hairless. Pods dehiscent, linear-oblong, 5·5-16·5, hairless, usually straight, blackish to grey-brown.
Notes:
Derivation of specific name: welwitschii: named after the Austrian botanist, Friedrich Martin Welwitsch (1806-1872)
Habitat: In riverine fringes on alluvial soils.
Altitude range: (metres)
Flowering time:Nov - Dec
Worldwide distribution: Mozambique, Zimbabwe and Mpumalanga South Africa.
Zimbabwe distribution: E,S
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species
Images last updated: Friday 26 October 2018
Literature:

Brenan, J.P.M. (1970). Mimosoideae Flora Zambesiaca 3(1) Pages 78 - 79.

Burrows, J.E., Burrows, S.M., Lötter, M.C. & Schmidt, E. (2018). Trees and Shrubs Mozambique Publishing Print Matters (Pty), Cape Town. Page 204. (Includes a picture).

Coates Palgrave K. (revised and updated by Meg Coates Palgrave) (2002). Trees of Southern Africa 3rd edition. Struik, South Africa Page 302.

Da Silva, M.C., Izidine, S. & Amude, A.B. (2004). A preliminary checklist of the vascular plants of Mozambique. Southern African Botanical Diversity Network Report No. 30 Sabonet, Pretoria Page 63.

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.

Mapaura, A. & Timberlake, J. (eds) (2004). A checklist of Zimbabwean vascular plants Southern African Botanical Diversity Network Report No. 33 Sabonet, Pretoria and Harare Page 44.

Schmidt, E., Lötter, M. & McCleland, W. (2002). Trees and shrubs of Mpumalanga and Kruger National Park Jacana, Johannesburg, South Africa Pages 166 - 167. (Includes a picture).

Timberlake, J., Fagg, C. & Barnes, R. (1999). Field Guide to the Acacias of Zimbabwe CBC Publishing, Harare Pages 136 - 137. (Includes a picture).

Van Wyk, B. & Van Wyk, P. (1997). Field Guide to Trees of Southern Africa. Struik, South Africa Pages 488 - 489. (Includes a picture).

Van Wyk, B. & Van Wyk, P. (2013). Field Guide to Trees of Southern Africa (Second edition) Struik, South Africa Pages 578 - 579. (Includes a picture).


Other sources of information about Acacia welwitschii subsp. delagoensis:

Our websites:

Flora of Mozambique: Acacia welwitschii subsp. delagoensis

External websites:

African Plants: A Photo Guide (Senckenberg): Acacia welwitschii
Biodiversity Explorer (Biodiversity of southern Africa): Acacia welwitschii
BHL (Biodiversity Heritage Library): Acacia welwitschii
EOL (Encyclopedia of Life): Acacia welwitschii
ePIC (electronic Plant Information Center): Acacia welwitschii
Flora Zambesiaca web site: Acacia welwitschii
GBIF (Global Biodiversity Information Facility): Acacia welwitschii
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network): Acacia welwitschii
IPNI (International Plant Names Index): Acacia welwitschii
Ispot Southern Africa: Acacia welwitschii
JSTOR Plant Science: Acacia welwitschii
Kew Herbarium catalogue: Acacia welwitschii
Mansfeld World Database of Agricultural and Horticultural Crops: Acacia welwitschii
The Plant List (version 1.1): Acacia welwitschii
Tropicos: Acacia welwitschii


Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-18

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2018). Flora of Zimbabwe: Species information: Acacia welwitschii subsp. delagoensis.
https://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=126250, retrieved 14 November 2018

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