Acacia tortilis (Forssk.) Hayne
subsp. spirocarpa (Hochst. ex A. Rich.) Brenan

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Synonyms: Acacia spirocarpa Hochst. ex A. Rich.
Common names: Umbrella thorn (English)
Medium to large tree with a distinct flat topped, umbrella shape. It is generally a larger tree than subsp. heteracantha, except where young specimens are heavily browsed upon by large game on a regular basis. The pods of subsp. spirocarpa are more laxly curled and covered in velvety hairs and small red glands. The young branches are also pubescent.
Derivation of specific name:
Flowering time:Nov - Jan
Worldwide distribution:
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species

Brenan, J.P.M. (1970). Mimosoideae Flora Zambesiaca 3(1) Pages 102 - 103.

Curtis, B.A. & Mannheimer, C.A. (2005). Tree Atlas of Namibia National Botanic Research Institute, Windhoek Pages 180 - 182. (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.

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

Timberlake, J., Fagg, C. & Barnes, R. (1999). Field Guide to the Acacias of Zimbabwe CBC Publishing, Harare Pages 132 - 134. (Includes a picture).

Other sources of information about Acacia tortilis subsp. spirocarpa:

Our websites:

Flora of Botswana: Acacia tortilis subsp. spirocarpa
Flora of Mozambique: Acacia tortilis subsp. spirocarpa
Flora of Zambia: Acacia tortilis subsp. spirocarpa
Flora of Zimbabwe: Acacia tortilis subsp. spirocarpa

External websites:

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

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2014-18

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2018). Flora of Caprivi: Species information: Acacia tortilis subsp. spirocarpa., retrieved 21 March 2018

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