Emex australis Steinh.

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Emex australis

Photo: Tony Benn
Small park in Broadhurst, Extension 27, Gaborone.

Emex australis

Photo: Tony Benn
Small park in Broadhurst, Extension 27, Gaborone.

Emex australis

Photo: Tony Benn
Small park in Broadhurst, Extension 27, Gaborone.

Emex australis

Photo: Tony Benn
Small park in Broadhurst, Extension 27, Gaborone.

Emex australis

Photo: Tony Benn
Small park in Broadhurst, Extension 27, Gaborone.

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

Synonyms: Emex spinosa sensu Dinter
Common names: Cape spinach (English)
Frequency:
Status: Probably introduced
Description:
Much-branched erect or prostrate herb with a semi-woody rootstock. Stems up to 30 cm long, sometimes longer, grooved, hairless, green, often tinged red towards the base. Leaves ovate oblong, 3.5-6 cm long, truncate or slightly cordate at the base and more or less decurrent on the petiole; petiole 3-10 cm long, channelled. Flowers unisexual on the same plant, green with brownish midribs on the perianth segments. Male flowers in terminal and axillary pedunculate clusters; female flowers sessile. Fruit a 3-sided nut, 12-13 mm wide, including rigid spines at the corners.
Notes:
Derivation of specific name: australis: southern
Habitat: Along roadsides and as a weed in wet disturbed places and irrigated fields.
Altitude range: 120 - 1200 m
Flowering time:
Worldwide distribution: Native Namibia and South Africa. Probably introduced to Zimbabwe, Mozambique and Botswana. Definitely introduced further North into East Africa, Madagascar, Australasia and USA.
Mozambique distribution: M
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species
Content last updated: Thursday 8 September 2016
Literature:

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 68.

Nogueira, I., Ortiz, S. & Paiva, J.A.R. (2006). Polygonaceae Flora Zambesiaca 9(3) Pages 38 - 40. (Includes a picture).

Setshogo, M.P. (2005). Preliminary checklist of the plants of Botswana. Sabonet Report no. 37. Sabonet, Pretoria and Gaborone Page 93.

Wild, H. (undated, c. 1955). Common Rhodesian Weeds ?Government of Rhodesia, Salisbury Page 18. (Includes a picture).

Other sources of information about Emex australis:

Our websites:

Flora of Botswana: Emex australis
Flora of Zimbabwe: Emex australis

External websites:

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


Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave 2007-19

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2019). Flora of Mozambique: Species information: Emex australis.
https://www.mozambiqueflora.com/speciesdata/species.php?species_id=121690, retrieved 16 July 2019

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