Duosperma quadrangulare (Klotzsch) Brummitt

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Photo: Helen Pickering
Livingstone: on the western edge of the sewerage ponds

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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:	Occurring in mixed deciduous woodland, alluvial grassland, on river banks, near pans or marshes, on termite mounds and in areas of old cultivation.
Altitude range:
Flowering time:	Almost throughout the year
Worldwide distribution:	Angola, Botswana, DRC, Namibia, Tanzania, Malawi, Mozambique, Zambia, Zimbabwe
Mozambique distribution:	N,Z,T,MS,GI,M
Growth form:
Endemic status:
Red data list status:
Insects (whose larvae eat this species):
Spot characters:	Display spot characters for this species
Content last updated:	Monday 27 December 2010
Literature:

Other sources of information about Duosperma quadrangulare:

African Plant Database: Duosperma quadrangulare
Biodiversity Explorer (Biodiversity of southern Africa): 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
JSTOR Plant Science: Duosperma quadrangulare
Kew Herbarium catalogue: Duosperma quadrangulare
Tropicos: Duosperma quadrangulare
West African Plants database: Duosperma quadrangulare