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

Myrtaceae - *Psidium L.

Description :

  • Small trees or large shrubs; young branches often pubescent, terete or sometimes square
  • Leaves opposite, elliptical, leathery
  • Flowers in a 3-flowered dichasium or solitary, on new growth
  • Calyx various, usually splitting irregularly down to ovary in anthesis, its tube (hypanthium) prolonged beyond summit of ovary, of 4 or 5 distinct teeth or lobes, completely closed in bud, or with an apical pore
  • Petals 5, spreading, white
  • Stamens conspicuous, many, in many series, much longer than petals; anthers versatile
  • Ovary 2- to 7-locular, sporophores apparently arising from central axis of ovary, mostly connate in pairs and simulating stalked, axile, bilamellate placentae
  • Fruit often fleshy, many-seeded, sometimes large and edible
  • Seeds hippocrepiform or reniform, with bony testa and uncinate or curved embryo
  • x = 11 (high polyploidy)

Nomenclature:

  • *Psidium L.
    • Linnaeus: 470 (1753)
    • McVaugh: 385 (1963)
    • McVaugh: 404 (1968)
    • Proctor: 518 (1972)

Distribution & Notes:

  • Global : Species ± 100, North America to Brazil
  • Southern Africa : Species 2 or more naturalised in warm, moist parts of Mpumalanga, Swaziland and KwaZulu-Natal

References:

  • LINNAEUS, C. 1753. Species plantarum . Laurentius Salvius, Stockholm
  • McVAUGH, R. 1963. Myrtaceae . In Flora of Guatemala, Fieldiana: Botany 24,7
  • McVAUGH, R. 1968. The genera of American Myrtaceae - an interim report. Taxon 17
  • PROCTOR, G.R. 1972. Myrtaceae . In C.D. Adams, Flowering plants of Jamaica . University of the West Indies, Mona, Jamaica