e-Key v<span id="jodit_selection_marker_1699538000947_7069475802836471" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>3 - *A<span id="jodit_selection_marker_1699538000947_7200634902806384" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>lhagi
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Fabaceae - Papilionoideae - Galegeae - Astragalinae - *Alhagi Gagnebin

Description:

  • Rigid, much-branched shrubs armed with sharp, straight, axillary spines
  • Leaves simple, usually small, entire; stipules minute, free
  • Flowers solitary or often few in axillary racemes, pink, red or purple; bracts very small; bracteoles none
  • Calyx campanulate, with 5 short, subequal teeth
  • Petals: vexillum obovate, shortly clawed; wings falcate-oblong, free; keel incurved, obtuse
  • Stamens diadelphous; vexillary stamen free, remainder connate; anthers uniform
  • Ovary subsessile, many-ovuled; style filiform, incurved, glabrous; stigma small, terminal
  • Pod linear, thick or subterete, smooth, indehiscent, strongly contracted between the seeds
  • Seeds 1-5, reniform
  • x = 8

Nomenclature:

  • *Alhagi Gagnebin
    • Gagnebin: 59 (1755)
    • Adanson: 328 & 514 (1763)
    • Harvey: 233 (1862)
    • Hutchinson: 469 (1964)
    • Henderson & Anderson: 174 (1966)
    • Ball: 191 (1968)

Distribution & Notes:

  • Global: Species 3, in dry or maritime places from Mediterranean regions to Nepal
  • Southern Africa: Species 1: *Alhagi maurorum Medik. (= *A. camelorum Fisch.), has become naturalised in the Douglas area (Northern Cape) and in parts of the Oudtshoorn District of the Western Cape

References:

  • ADANSON, M. 1763. Familles des plantes 2. Vincent, Paris
  • BALL, P.W. 1968. Leguminosae. Flora europaea 2
  • GAGNEBIN, A. 1755. Alhagi. Acta helvetica physico-mathematico-anatomico-medica 2
  • HARVEY, W.H. 1862. Leguminosae. Flora capensis 2
  • HENDERSON, M. & ANDERSON, J.G. 1966. Caesalpinia decapetala (Roth) Alston. Common weeds in South Africa. Memoirs of the Botanical Survey of South Africa 37
  • HUTCHINSON, J. 1964. Order LEGUMINALES. The genera of flowering plants 1. Oxford University Press, Oxford