e-Key <span id="jodit_selection_marker_1707200282285_9690280532134066" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Ba<span id="jodit_selection_marker_1707200282285_8451864372953766" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>issea
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Apocynaceae - Apocynoideae - Apocyneae - Baissea A.DC.

Description:

  • Woody climbers, often very tall
  • Leaves opposite, simple, entire, shortly petioled, penninerved, often acuminate; axillary glands 0; stipules 0
  • Inflorescence terminal or axillary, paniculate or corymbose, rarely a few-flowered cyme
  • Flowers relatively small, white or purple, usually fragrant
  • Calyx small, divided almost to base, eglandular or with 5 glands; lobes imbricate, lanceolate, ovate-lanceolate, or rotundate
  • Corolla funnel-shaped or campanulate, usually widest or slightly constricted at mouth, glabrous within, usually with fleshy, projecting calli or scales just above insertion of stamens; lobes longer than tube, mostly very narrow, overlapping to the right
  • Stamens inserted above base of corolla tube; filaments very short, stout; anthers 4-locular, conniving in a cone around style, lanceolate, apiculate, long-sagittate at base, polliniferous in upper part only, with foot of connective hollowed out
  • Disc saucer-shaped or cupular, subtruncate, sinuate or 5-lobed
  • Ovary of 2 free carpels, slightly inferior, subtruncate, usually pubescent; style shorter than stamens; stigma ellipsoid with 5 pits and small, 2-lobed apex
  • Mericarps 2, follicular, usually cylindric and slender
  • Seeds linear-lanceolate to oblong, truncate at tip with a deciduous, apical tuft of hairs
  • x = 11

Nomenclature:

  • Baissea A.DC.
    • Candolle: 424 (1844)
    • Codd: 276 (1963)
    • De Kruif: 495 (1985)
    • Van Dilst: 89 (1995)
  • Zygodia Benth.
    • Bentham: 716 (1879).
  • Perinerion Baill.
    • Baillon: 758 (1888).
  • Guerkea K.Schum.
    • Schumann: 180, fig. 59 (1895).
  • Conodura K.Schum.
    • Schumann: 229 (1896)

Distribution & Notes:

  • Global: Species 18, continental Africa, Angola, Zambia
  • Southern Africa: Species 1: Baissea wulfhorstii Schinz, N Namibia, N Botswana

References:

  • BAILLON, H.E. 1888. Perinerion & Zygoneurion. Bulletin mensuel de la Société Linnéenne de Paris 1
  • BENTHAM, G. 1879. Zygodia. In G. Bentham & J.D. Hooker, Genera plantarum 2. Reeve, London
  • CANDOLLE, A.L. DE. 1844. Baissea. Prodromus 8. Treuttel & Würtz, Paris
  • CODD, L.E. 1963. Apocynaceae. Flora of southern Africa 26
  • DE KRUIF, A.P.M. 1985. Apocynaceae: Baissea, Holarrhena and Rauvolfia. Flora zambesiaca 7,2
  • SCHUMANN, K.M. 1895. Apocynaceae. Die natürlichen Pflanzenfamilien 4,2
  • SCHUMANN, K.M. 1896. Conodura. Botanische Jahrbücher 23
  • VAN DILST, F.J.H. 1995. Baissea A.DC. Series of revisions of Apocynaceae XXXIX. Bulletin du Jardin Botanique National de Belgique 64