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

Fabaceae - Papilionoideae - Aeschynomeneae - Aeschynomeninae - Zornia J.F.Gmel.

Description :

  • Erect or prostrate herbs, mainly perennial
  • Leaves digitately 2-4-foliolate; leaflets often pellucid-dotted; stipules subfoliaceous
  • Flowers yellow or orange-yellow, solitary or in interrupted spikes; spikes pedunculate, axillary or terminal; bracts enclosing flowers
  • Calyx membranous, 2 upper lobes connate, 2 lateral small, lowest subequal to upper lip
  • Petals : vexillum clawed; wings clawed; keel incurved, subrostrate, clawed
  • Stamens monadelphous, united into a column below, which at maturity is circumscissile and upper part is shed with petals, lower tubular part remaining to protect ovary; anthers unequal, 5 larger subbasifixed, 5 smaller versatile
  • Ovary sessile; several- to many-ovuled; style filiform, with small, terminal stigma
  • Pod sessile, compressed, with upper suture nearly straight, lower deeply sinuate, 2-15-jointed, breaking into smooth or spiny, indehiscent segments
  • Seeds ovoid, mostly black or dark brown, without appendages
  • x = 10, 11

Nomenclature:

  • Zornia J.F.Gmel.
    • Gmelin: 1076, 1096 (1791)
    • Harvey: 225 (1862)
    • Mohlenbrock: 1 (1961)
    • Verdcourt: 497 (1973)

Distribution & Notes:

  • Global : Species ± 80, mainly Brazil
  • Southern Africa : Species 4, widespread from northern borders to the Northern and Eastern Cape

References:

  • GMELIN, J.F. 1791. Caroli à Linné, Systema naturae 2: 1076, 1096. Beer, Leipzig
  • HARVEY, W.H. 1862. Leguminosae . Flora capensis 2
  • MOHLENBROCK, R.H. 1961. A monograph of the Leguminous genus Zornia . Webbia 16
  • VERDCOURT, B. 1973. Summary of the Leguminosae - Papilionoideae - Hedysareae (sensu lato) of Flora Zambesiaca. Kirkia 9