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

Goyder, D.J. (2007) Zimbabwean Asclepiadaceae. Unpublished list.

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). We will await a broader form of acceptance of this new concept before changing the taxonomy in our database.

Worldwide: 56 species in Africa and South West Arabia.

Caprivi: 3 taxa.

Orbea caudata subsp. rhodesiaca

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

SpeciesContent
caudata (N.E. Br.) Bruyns subsp. rhodesiaca (L.C. Leach) BruynsDescription, Image
schweinfurthii (A. Berger) BruynsDescription, Image
valida (N.E. Br.) Bruyns subsp. valida Image

Other sources of information about Orbea:

Our websites:

Flora of Botswana: Orbea
Flora of Malawi: 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
IPNI (International Plant Names Index): Orbea
Kew Herbarium catalogue: Orbea

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2014-18

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2018). Flora of Caprivi: Genus page: Orbea.
https://www.capriviflora.com/speciesdata/genus.php?genus_id=1159, retrieved 19 July 2018

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