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

Rhizophoraceae - Bruguiera Savigny

Description :

  • Glabrous evergreen trees or shrubs (mangroves)
  • Leaves opposite, oblong to elliptic, leathery, lower surface often with small black dots
  • Flowers axillary, usually solitary, ebracteate
  • Calyx 8-15-lobed, leathery; tube turbinate, adhering to ovary; lobes longer than tube, linear-lanceolate, keeled on inner face, valvate, accrescent
  • Petals as many as calyx lobes, oblong, concave, bifid, with each lobe and midrib produced into awns, woolly or pilose on margins at base
  • Stamens twice as many as petals, in pairs opposite and embraced by petals; filaments shorter than petals; anthers shorter than filaments, linear to linear-oblong, hooked at apex
  • Ovary inferior, 2-4-locular, with 2 ovules in each locule; style nearly as long as calyx lobes, shortly 2-4-lobed
  • Fruit a turbinate or cylindric leathery berry, wrinkled and crowned with persistent calyx; 1-seeded by abortion
  • Seeds 1 by abortion, pendulous, germinating before fruit-fall and developing a hypocotyl with longitudinally ridges
  • x = 18 (B-chromosomes)

Nomenclature:

  • Bruguiera Savigny
    • Savigny: 696 (1798)
    • Sonder: 514 (1862)

Distribution & Notes:

  • Global : Species 6, Africa to Asia and Australia
  • Southern Africa : Species 1: Bruguiera gymnorrhiza (L.) Lam., KwaZulu-Natal to Eastern Cape on Transkei coast as far south as the Willowvale District

References:

  • SAVIGNY, M.J.C.L. 1798. Le Rhizophore. Rhizophora : Le Palétuvier, Bruguiera Lam. In J.B.A.P. de Lamarck, Encyclopédie méthodique. Botanique 4. H. Agasse, Paris
  • SONDER, O.W. 1862. Rhizophoreae . Flora capensis 2