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This genus is accepted, and its native range is Nigeria, Eritrea to S. Africa, Arabian Peninsula.


Apocynaceae (part 2), David Goyder, Timothy Harris, Siro Masinde, Ulrich Meve, Johan Venter. Flora of Tropical East Africa, 2012

Clump-forming or creeping stem-succulents.
Latex clear or at most cloudy
Shoots green or blue-green, cylindrical, roundly or sharply 4- to 6-angled.
Leaf rudiments spreading to ascending, sessile, caducous, sometimes spinescent; stipules absent.
Inflorescences, 1–6-flowered, basal, pedunculate
Flowers often foetid
Corolla 5lobed, but often with small intermediate bulges or lobules in the sinuses of the principal lobes, rotate, campanulate, cyathiform, elongated-conical, urceolate or globose, fused for most of its length, tube often with with central annulus (corolline corona), corolla lobes triangular, abaxially occasionally warty, adaxially often warty or rugose, glabrous, often scuptured with massive conical to cylindrical emergences, often tipped by a papilla or trichome, variously coloured and/or patterned
Gynostegial corona in 2 series: “outer” corona with 5 free staminal and 5 interstaminal parts fused to form a basal ring or disc appressed to corolla tube, free interstaminal corona lobes, if differentiated, lingulate or rectangular; “inner” corona of staminal lobes atop gynostegium, dolabriform, triangular or clavate, often with a humped back, erect, reflexed or inflexed
Gynostegium sessile, with elongated filament tube and little humps below each widened mouth of vertical anther wings
Pollinia oblong-ellipsoid; corpusculum with triangular to oblong basal projections
Mericarps two, fusiform, seeds ovate, broadly winged.
Sixty-seven species in Africa and Arabia, with a centre of distribution in southern Africa.


M. Thulin et al. Flora of Somalia, Vol. 1-4 [updated 2008]

Stems usually ascending-erect, rarely creeping or pendent, glabrous, mostly 4–5-angled with prominent stem teeth; latex clear
Leaves usually modified into acute tips to the stem teeth, without stipules
Flowers from short stout perennial peduncles near the base of the stems, 1–several together, opening successively
Corolla tubular, campanulate or almost rotate, sometimes with an inflated annulus; lobes mostly triangular, not replicate, well developed intermediate lobes always present
Corona gynostegial, sessile; outer corona disk-shaped to 5- or 10-lobed, appressed to the bottom of corolla-tube; inner lobes at first erect, rising to the top of the staminal column, then bent abruptly over it, with a dorsal gibbosity at the bend, connivent over the centre of the staminal column or extending beyond it, the tips often divergent
Follicles erect, diverging slightly, rather shortly fusiform
Seeds with a tuft of hairs at one end.
Genus of over 70 species, the majority in southern Africa, extending through central and east Africa to Sudan and tropical Arabia, with a single species also in Nigeria.

Native to:

Angola, Botswana, Cape Provinces, Caprivi Strip, Eritrea, Ethiopia, Free State, Kenya, KwaZulu-Natal, Lesotho, Malawi, Mozambique, Namibia, Nigeria, Northern Provinces, Saudi Arabia, Somalia, Sudan, Swaziland, Tanzania, Yemen, Zambia, Zimbabwe

Huernia R.Br. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Greenway, P.J. 30514.000
Bally, P.R.O. [S.188] 31712.000
Collenette, I.S. [6342], Saudi Arabia 52268.000
Collenette, I.S. [633], Saudi Arabia 54027.000
Collenette, I.S. [6871], Saudi Arabia 54297.000
Collenette, I.S. [7785], Saudi Arabia 57339.000
Lavranos [13137A] 52431.000
Lavranos [13071] 53867.000
Wood, J.R.I. [3037], Yemen 44124.000
Wood, J.R.I. [3271], Yemen 45707.000
Spaikes 31251.000
Collenette, J.S. [8267], Saudi Arabia 58350.000
Collenette, I. S. [3180], Saudi Arabia 42835.000
Gibbs, L. S. [10735], Zimbabwe 5354.000

First published in Asclepiadeae: 11 (1810)

Accepted by

  • Goyder, S., Harris, T., Masinde, S., Meve, U. & Venter, J. (2012). Flora of Tropical East Africa, Apocynaceae(2): 1-530.
  • Thulin, M. (ed.) (2006). Flora of Somalia 3: 1-626. The Royal Botanic Gardens, Kew.
  • Albers, F. & Meve, U. (eds.) (2002). Illustrated handbook of succulent plants Asclepiadaceae, corr. 2nd printing: 1-318. Springer, Berlin, Heidelberg,New York.


Flora of Somalia

  • Flora Somalia, Vol 3, (2006) Author: by J. Lavranos [updated by M. Thulin 2008]
  • Leach in Excelsa, Taxon. Ser. 4: 1–194 (1988).

Flora of Tropical East Africa

  • Excelsa Tax. Ser. 4: 1–196 (1988)
  • Asclepiadeae: 11 (1810)

Flora of Somalia
Flora of Somalia

Flora of Tropical East Africa
Flora of Tropical East Africa

Herbarium Catalogue Specimens
'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet [accessed on Day Month Year]'. Please enter the date on which you consulted the system.

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at and
© Copyright 2017 World Checklist of Selected Plant Families.

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at and
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families.