e-Key <span id="jodit_selection_marker_1707814537336_3680067551372457" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Cephala<span id="jodit_selection_marker_1707814537337_35318662749295915" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>nthus
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Rubiaceae - Antirheoideae - Cephalantheae - Cephalanthus L.

Description:

  • Shrubs, small trees or sometimes scandent
  • Leaves elliptic or ovate-elliptic, entire; stipules ovate, acuminate
  • Flowers in dense globose heads; heads terminal on short branches, peduncled
  • Calyx 5-lobed, very much shorter than corolla; lobes ovate to oblong
  • Corolla 5-lobed; lobes imbricate, ovate, ciliate on inner face, somewhat fleshy, glabrous, maroon; tube funnel-shaped, long, gradually widening from base upwards, greenish white to yellowish
  • Stamens 5, arising deep in corolla throat, included; filaments linear, shorter than anthers; anthers linear, bluntly apiculate, shortly sagittate
  • Ovary 2-locular, with a solitary, pendulous ovule in each locule; style terete, long-exserted, gradually thickening upwards into a club-shaped stigma
  • Fruit clustered in dense globose heads, subsucculent, breaking into 1-seeded cocci
  • Seeds ± ovate in outline, convex on one side, flat on other
  • x = 11 (1 report, aneuploids, polyploidy)

Nomenclature:

  • Cephalanthus L.
    • Linnaeus: 95 (1753)
    • Phillips: 724 (1951)

Distribution & Notes:

  • Global: Species 6, tropical regions and North America
  • Southern Africa: Species 1: Cephalanthus natalensis Oliv., Northern Province, KwaZulu-Natal and Swaziland

References:

  • LINNAEUS, C. 1753. Species plantarum. Laurentius Salvius, Stockholm.
  • PHILLIPS, E.P. 1951. The genera of South African flowering plants. Memoirs of the Botanical Survey of South Africa No. 25