e-Key v3 - Ziziphus
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Rhamnaceae - Ziziphus Mill.

Description :

  • Trees or shrubs, sometimes decumbent or with rhizomes, often spinescent
  • Leaves alternate, petioled, entire or toothed, palmately veined
  • Flowers small, in short, axillary cymes
  • Calyx 5-fid; lobes keeled within
  • Petals 5(0), shorter than sepals, spatulate, usually clawed
  • Disc flat, 5- or 10-angled, adhering to calyx tube
  • Stamens 5, inserted outside disc, reflexed
  • Ovary superior, immersed in disc, 2(3 or 4)-locular; styles 2 or 3, free or connate; stigmas papillose
  • Fruit a drupe, sometimes the size of a cherry
  • Seeds usually solitary, suborbicular or elliptic, compressed
  • x = 12 (10, 13) (high polyploidy)

Nomenclature:

  • Ziziphus Mill.
    • Miller: [1547] (1754)
    • Sonder: 475 (1860)
    • Drummond: 419 (1966)
    • Johnston: 23 (1972)

Distribution & Notes:

  • Global : Species ± 86, mostly in E Asia and East lndies
  • Southern Africa : Species 6, Namibia, Botswana, Northern Province, North-West, Gauteng, Mpumalanga, Swaziland, Free State, KwaZulu-Natal, Northern and Eastern Cape

References:

  • DRUMMOND, R.B. 1966. Rhamnaceae . Flora zambesiaca 2
  • JOHNSTON, M.C. 1972. Flora of tropical East Africa . Rhamnaceae
  • MILLER, P. 1754. The gardener's dictionary , abridged edn 4. Rivington, London
  • SONDER, O.W. 1860. Rhamneae , R.Br. Flora capensis 1