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This genus is accepted, and its native range is S. Tropical & S. Africa.
Harpagophytum sp.

[FZ]

Pedaliaceae, H. D. Ihlenfeldt. Flora Zambesiaca 8:3. 1988

Morphology General Habit
Perennial herb with several prostrate annual stems from a succulent tuberous taproot, additional tubers often present on lateral roots; whole plant glabrous or subglabrous and covered with mucilage-glands.
Morphology Leaves
Leaves opposite, subsucculent, petiolate, very variable in shape and often polymorphic.
Morphology Reproductive morphology Flowers
Flowers solitary, shortly pedicelled, erect; corolla tube nearly cylindrical, constricted at the base; limb spreading; lobes of limb subequal, circular to oblate; corolla tube light purple, pink, yellow or white outside, usually more or less yellow inside; limb purple or mauve, occasionally yellow.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 4, included, inserted near the base of the corolla tube; thecae divergent; staminodium present, with apical gland.
Morphology Reproductive morphology Flowers Gynoecium Ovary
Ovary bilocular; false septa absent.
Morphology Reproductive morphology Fruits
Fruit a woody capsule, tardily loculicidally imperfectly dehiscent, laterally compressed, with two obtuse protuberances on each face, armed with two rows of curved arms along the edges each bearing recurved spines or the edges with two rigid wings bearing recurved spines; mature fruit easily detachable (forming a “trample burr”).
Morphology Reproductive morphology Seeds
Seeds numerous, spreading, in 2 or 4 rows in each loculus, narrowly obovate in outline; testa irregularly reticulate, black.

Native to:

Angola, Botswana, Cape Provinces, Caprivi Strip, Free State, KwaZulu-Natal, Lesotho, Mozambique, Namibia, Northern Provinces, Swaziland, Zambia, Zimbabwe

Harpagophytum DC. ex Meisn. appears in other Kew resources:

First published in Pl. Vasc. Gen.: 298 (1840)

Accepted by

  • Govaerts, R., Nic Lughadha, E., Black, N., Turner, R. & Paton, A. (2021). The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. https://doi.org/10.1038/s41597-021-00997-6 Scientific Data 8: 215.

Literature

Flora Zambesiaca

  • Ihlenf. & Hartm. in Mitt. Staatsinst. Allg. Bot. Hamburg 13: 15–69 (1970).
  • Pl. Vasc. Gen. 1: 298 and 2: 206 (1840)

Art and Illustrations in Digifolia
Digital Image © Board of Trustees, RBG Kew

Flora Zambesiaca
Flora Zambesiaca
http://creativecommons.org/licenses/by-nc-sa/3.0

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0