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6883.000 Duvalia
Bruyns, P.V. (2005) Stapeliads of Southern Africa and Madagascar Volume I Umdaus Press, Hatfield, South Africa
Bruyns, P.V., Klak, C. & Hanáček, P. (2017) A revised, phylogenetically-based concept of Ceropegia (Apocynaceae) South African Journal of Botany 112 399-436
Leistner, O.A. (ed.) (2000) Seed plants of southern Africa: families and genera Strelitzia 10
Description of the genus
Stems fleshy, glabrous, 4-6-angled, tubercled with rudimentary leaves arising from the centre of the tubercle and minute glandular stipules on either side at the base. Flowers often arising from the base of the stem. Sepals ovate-lanceolate, acuminate. Corolla a raised cushion-like annulus. Corona of two rows; inner and outer well separated vertically; inner flat and disk-like; outer of 5 swollen lobes borne around the staminal column. Follicles erect, glabrous. Seeds with an apical tuft of hairs. Derivation of name: named after Henry August Duval (1777 - 1814), French botanist. Comment: More recent phylogenetic evidence has led to the forming of a very broad concept of the genus Ceropegia including the genus Brachystelma and all known genera within the Stapeliae (Bruyns, P.V., Klak, C. & Hanáček, P., 2017). However we follow Goyder et Al. in Flora Zambesiaca 7(2), 2020 where the inclusion of the Stapeliad genera has not been accepted. Worldwide: 17 species in Africa. Botswana: 1 taxon. |
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Links to taxa: View: living plant images - herbarium specimen images - all images for this genus
| Species | FZ divisions | Content |
| polita N.E. Br. var. polita | N,SE | Description, Image |
Other sources of information about Duvalia:
Our websites:
Flora of Caprivi: DuvaliaFlora of Malawi: Duvalia
Flora of Mozambique: Duvalia
Flora of Zambia: Duvalia
Flora of Zimbabwe: Duvalia
External websites:
African Plants: A Photo Guide (Senckenberg): DuvaliaBHL (Biodiversity Heritage Library): Duvalia
EOL (Encyclopedia of Life): Duvalia
GBIF (Global Biodiversity Information Facility): Duvalia
Google: Web - Images - Scholar
iNaturalist: Duvalia
IPNI (International Plant Names Index): Duvalia
JSTOR Plant Science: Duvalia
Mansfeld World Database of Agricultural and Horticultural Crops: Duvalia
Plants of the World Online: Duvalia
Tropicos: Duvalia
Wikipedia: Duvalia
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