Duosperma quadrangulare (Klotzsch) Brummitt

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Duosperma quadrangulare

Photo: Fraser Gear
Along road from Entrance gate to Chitengo Camp, 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: Disperma dentatum (Klotzsch) C.B.Clarke
Nomaphila quadrangularis Klotzsch
Common names:
Frequency:
Status: Native
Description:
Erect or rarely decumbent, shrubby perennial herb, up to c. 1.2m tall. Stem 4-angled, aromatic when crushed, more or less densely covered with sticky glands and non-glandular hairs. Leaves opposite, elliptic to somewhat obovate, 3 - 20 cm long, hairless or with scattered glossy hairs on the veins; base decurrent; margin almost entire to toothed. Leaves often immature when flowering. Flowers in 1-3-flowered clusters in the upper axils, together often forming racemes or panicles with leaf-like bracts near the base of the inflorescence. Calyx with glandular and non-glandular hairs. Corolla white to mauve-purple with darker markings on the lower lip and a yellow to orange palate with stiff hairs on it. Fruit an obovoid capsule, 7-11 mm long, hairless or with scattered glands near the apex.
Notes:
Derivation of specific name: quadrangulare: 4-angled, referring to the stems.
Habitat: In mixed deciduous woodland, alluvial grassland, on river banks, near pans or marshes, on termite mounds and in areas of old cultivation.
Altitude range: (metres) Up to 1500 m
Flowering time:Almost throughout the year
Worldwide distribution: Angola, Botswana, DRC, Namibia, Tanzania, Malawi, Mozambique, Zambia, Zimbabwe
Zimbabwe distribution: N,W,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: Monday 27 December 2010
Literature:

Setshogo, M.P. (2005). Preliminary checklist of the plants of Botswana. Sabonet Report no. 37. Sabonet, Pretoria and Gaborone Page 18.

Vollesen, K. (2013). Acanthaceae (Part 1) Flora Zambesiaca 8(5) Pages 160 - 161.


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Other sources of information about Duosperma quadrangulare:

Our websites:

Flora of Botswana: Duosperma quadrangulare
Flora of Caprivi: Duosperma quadrangulare
Flora of Malawi: Duosperma quadrangulare
Flora of Mozambique: Duosperma quadrangulare
Flora of Zambia: Duosperma quadrangulare

External websites:

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


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: Species information: Duosperma quadrangulare.
http://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=153330, retrieved 25 September 2016

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