6885.050 Orbea Haw.

CARALLUMA R. Br.

ORBEOPSIS L.C. Leach

PACHYCYMBIUM L.C. Leach

Bruyns, P.V. (2002) Monograph of Orbea and Ballyanthus (Apocynaceae-Asclepiadoideae-Ceropegieae) Systematic Botany Monographs 63 1-196

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

Fayaz, F. (2011) Encyclopedia of Tropical Plants Firefly Books, New Zealand

Leach, L.C. (1975) The Reinstatement of Orbea Haw. (Asclepiadaceae) Kirkia 10(1) 287-291

Description of the genus

Succulents, spineless; often rhizomatous, forming compact to diffuse clumps. Stems decumbent to prostrate, fleshy and firm, glabrous, purplish, mottled; tubercles spreading, often laterally flattened. Inflorescences glabrous, often 1-3 per stem; 1-40 flowered; bracts 1-several, lanceolate with several teeth. Sepals 5, lanceolate, acuminate; corolla usually rotate to campanulate, often thickened into a prominent annulus around a mount, mostly deeply lobed. Fruit consisting of erect follicles, divergent with two horns.

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: 56 species in Africa and South West Arabia.

Malawi: 2 taxa.

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

SpeciesFZ divisionsContent
caudata (N.E. Br.) Bruyns subsp. caudata C
schweinfurthii (A. Berger) BruynsSDescription, Image

Other sources of information about Orbea:

Our websites:

Flora of Botswana: Orbea
Flora of Caprivi: Orbea
Flora of Mozambique: Orbea
Flora of Zambia: Orbea
Flora of Zimbabwe: Orbea

External websites:

ePIC (electronic Plant Information Center): Orbea
Flora Zambesiaca web site: Orbea
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network) taxonomy for plants report for Orbea
Wikipedia: Orbea
IPNI (International Plant Names Index): Orbea
Kew Herbarium catalogue: Orbea

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2014-22

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2022). Flora of Malawi: Genus page: Orbea.
https://www.malawiflora.com/speciesdata/genus.php?genus_id=1159, retrieved 27 November 2022

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