7940.000 Duosperma Dayton

DISPERMA C.B. Clarke

Leistner, O.A. (ed.) (2000) Seed plants of southern Africa: families and genera Strelitzia 10

Vollesen, K. (2006) A taxonomic revision of the genus Duosperma (Acanthaceae) Kew Bulletin 61(3) 289-351

Description of the genus

Perennial herbs or shrubs. Leaves (in ours) dentate. Inflorescences of axillary dichasical cymes. Bracts and bracteoles c. as long as calyx. Calyx lobes 5, ovate. Corolla 2-lipped; upper lip 3-lobed, transversely ribbed on palate. Fertile stamens 4. Capsule with 1 seed in each loculus. Seeds borne on retinacula; with white hygroscopic hairs.

Worldwide: 26 species in tropical and southern Africa with one species extending into Yemen

Zimbabwe: 2 taxa.

Duosperma crenatum

Links to taxa:     View: living plant images - herbarium specimen images - all images for this genus

SpeciesFZ divisionsContent
crenatum (Lindau) P.G. Mey.N,W,C,EDescription, Image
quadrangulare (Klotzsch) BrummittN,W,E,SDescription, Image

Other sources of information about Duosperma:

Our websites:

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

External websites:

African Plants: A Photo Guide (Senckenberg): Duosperma
BHL (Biodiversity Heritage Library): Duosperma
EOL (Encyclopedia of Life): Duosperma
GBIF (Global Biodiversity Information Facility): Duosperma
Google: Web - Images - Scholar
iNaturalist: Duosperma
IPNI (International Plant Names Index): Duosperma
JSTOR Plant Science: Duosperma
Mansfeld World Database of Agricultural and Horticultural Crops: Duosperma
Plants of the World Online: Duosperma
Tropicos: Duosperma
Wikipedia: Duosperma

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-24

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2024). Flora of Zimbabwe: Genus page: Duosperma.
https://www.zimbabweflora.co.zw/speciesdata/genus.php?genus_id=1332, retrieved 24 April 2024

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