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

Euphorbiaceae - Acalyphoideae - Acalypheae - Micrococca Benth.

Description :

  • Herbs or shrubs; monoecious or dioecious
  • Leaves alternate, often large and serrate; stipulate
  • Inflorescence a raceme or spike with male flowers glomerulate and distant, with an occasional pedicellate female flower
  • Petals 0
  • Male flowers : calyx splitting into 3 or 4 valvate lobes; disc 0; stamens 3-30, usually intermixed with small glands and sometimes surrounded by a ring of similar, free or connate glands; filaments free; pistil 0
  • Female flowers : calyx 2-4-partite; lobes imbricate; disc glands 2-6, resembling staminodes, alternating with carpels, rarely saucer-shaped; ovary (2)3(4)-locular, with a solitary ovule in each locule; styles 3(4), free or connate near base, plumose-laciniate
  • Fruit a capsule breaking up into (2)3(4) bivalved cocci or by abortion 1 coccus, separating septifragally from a crustaceous or woody columella; pericarp thin; endocarp crustaceous
  • Seeds subglobose, enclosed by thin aril; testa crustaceous, foveolate-reticulate, sometimes muricate or smooth; albumen fleshy; cotyledons suborbicular, sometimes scarcely larger than radicle
  • x = 10 (polyploidy)

Nomenclature:

  • Micrococca Benth.
    • Bentham: 503 (1849)
    • Prain: 460 (1920)
    • Radcliffe-Smith: 47 (1987)
    • Webster: 88 (1994)
    • Radcliffe-Smith: 176 (1996)

Distribution & Notes:

  • Global : Species 12, mostly tropical Africa, also Madagascar to Asia
  • Southern Africa : Species 2 in eastern parts

References:

  • BENTHAM, G. 1849. In W.J. Hooker, Niger Flora . Hippolyte Baillière, London
  • PRAIN, D. 1920. Euphorbiaceae [in part]. Flora capensis 5, 2
  • RADCLIFFE-SMITH, A. 1987. Segregate families from the Euphorbiaceae . Botanical Journal of the Linnean Society 94
  • RADCLIFFE-SMITH, A. 1996. Euphorbiaceae . Flora zambesiaca 9, 4
  • WEBSTER, G.L. 1994. Synopsis of the genera and suprageneric taxa of Euphorbiaceae . Annals of the Missouri Botanical Garden 81