Spermatophyta: Dicotyledonae: Metachlamydeae: Gentianales

Apocynaceae subfamilies Asclepiadoideae and Secamonoideae - Milkweed and stapeliad family

Asclepiadaceae

Leistner, O.A. (2005) Seed plants of southern tropical Africa: families and genera SABONET Report No. 26 SABONET, Pretoria

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

Mapaura, A. & Timberlake, J. (eds) (2004) A checklist of Zimbabwean vascular plants Southern African Botanical Diversity Network Report No. 33 Sabonet, Pretoria and Harare

Description of the family

Perennial herbs or shrubs, sometimes twining or scrambling, often succulent and often with milky sap. Stipules usually 0. Leaves mainly opposite or whorled, rarely alternate, simple and usually entire. Flowers in umbels or cymes or, rarely, in racemes, actinomorphic, bisexual. Calyx usually of 5 free sepals, sometimes 5-lobed. Corolla gamopetalous, very variable; lobes 5, sometimes connate at tips. Corona usually arising from or near base of the staminal column, in 1-3 series, consisting of 5 free or connate lobes or processes, rarely 0. Filaments united into a staminal column, often short; anthers with horny wings; pollen in waxy masses attached by caudicles to a horny carrier. Ovaries 2, superior, each 1-locular. Fruit of 2 follicles, sometimes only one developing. Seeds usually with marginal wing and a tuft of long, silky hairs at apex.

A difficult family because it lacks a consistent and complete modern coverage. Extensive use has been made of the keys and descriptions in Leistner (2000) and Leistner (2005).

We are also very grateful to David Goyder of Kew who revised and updated the taxa on this site.

Worldwide: 248 genera and 2,800 species, tropical and warm areas, especially Africa.

Zambia: 27 genera and 87 taxa.

Insects associated with this family:

Aphis nerii (Milkweed aphid, Oleander aphid)
Aspidoglossum connatum

Links to genera:     View: living plant images - herbarium specimen images - all images for this family

GenusContent
Asclepias L.Description
Aspidoglossum E. Mey.Description
Brachystelma R. Br.Description
Calotropis R. Br.Description
Ceropegia L.Description
Cynanchum L.
Duvalia Haw.Description, Image
Fockea Endl.Description
Glossostelma Schltr.Description, Image
Gomphocarpus R. Br.Description, Image
Gongronema (Endl.) Decne.
Huernia R. Br.Description
Kanahia R. Br.Description
Margaretta Oliv.Description
Marsdenia R. Br.Description, Image
Orbea Haw.Description
Orthanthera WightDescription, Image
Pachycarpus E. Mey.Description
Pentarrhinum E. Mey.Description, Image
Pergularia L.Description, Image
Riocreuxia Decne.Description
Sarcostemma R. Br.Description
Secamone R. Br.Description
Sphaerocodon Benth.
Stapelia L.Description
Stathmostelma K. Schum.Description, Image
Xysmalobium R. Br.

Other sources of information about Apocynaceae subfamilies Asclepiadoideae and Secamonoideae:

Our websites:

Flora of Botswana: Apocynaceae subfamilies Asclepiadoideae and Secamonoideae
Flora of Caprivi: Apocynaceae subfamilies Asclepiadoideae and Secamonoideae
Flora of Malawi: Apocynaceae subfamilies Asclepiadoideae and Secamonoideae
Flora of Mozambique: Apocynaceae subfamilies Asclepiadoideae and Secamonoideae
Flora of Zambia: cultivated Apocynaceae subfamilies Asclepiadoideae and Secamonoideae
Flora of Zimbabwe: Apocynaceae subfamilies Asclepiadoideae and Secamonoideae
Flora of Zimbabwe: cultivated Apocynaceae subfamilies Asclepiadoideae and Secamonoideae

External websites:

GRIN (Germplasm Resources Information Network) taxonomy for plants report for Apocynaceae subfamilies Asclepiadoideae and Secamonoideae
Google: Web - Images - Scholar


Copyright: Mike Bingham, Annette Willemen, Bart Wursten, Petra Ballings and Mark Hyde, 2011-17

Bingham, M.G., Willemen, A., Wursten, B.T., Ballings, P. and Hyde, M.A. (2017). Flora of Zambia: Family page: Apocynaceae subfamilies Asclepiadoideae and Secamonoideae.
http://www.zambiaflora.com/speciesdata/family.php?family_id=22, retrieved 24 March 2017

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