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

Asteraceae - Gnaphalieae - Oedera L.

Description :

  • Shrublets, rather rigid and somewhat ericoid
  • Leaves opposite, ternate or spirally imbricate, ovate to linear
  • Capitula radiate, few-flowered, in terminal sessile clusters within a common involucre
  • Involucre broadly campanulate; bracts in 3 or 4 rows, ovate, lanceolate, ciliate, sometimes glandular on margins, pubescent or scabrid on back
  • Receptacle paleate; paleae acuminate or obtuse, sometimes fimbriate or irregularly 2- or 3-toothed
  • Ray florets female, marginal, corolla tube somewhat compressed, with long linear, minutely toothed lamina, much longer or somewhat shorter than tube
  • Style linear, with linear, obtuse or truncate branches
  • Pappus a crown of short paleae
  • Disc florets bisexual, fertile or some sterile; corolla tube campanulate or abruptly widening above
  • Anthers linear, obtuse at base, with a lanceolate, apical appendage
  • Ovary linear, glabrous
  • Style terete, with linear, truncate branches
  • Pappus a crown of short paleae

Nomenclature:

  • Oedera L.
    • Linnaeus: 291 (1771)
    • Harvey: 134 (1865)
    • Anderberg: 68 (1991)
    • Anderberg: 332 (1994)
  • Eroeda Levyns
    • Levyns: 83 (1948)

Distribution & Notes:

  • Southern Africa : Species 18, endemic to Western and Eastern Cape

References:

  • ANDERBERG, A.A. 1991. Taxonomy and phylogeny of the tribe Gnaphalieae ( Asteraceae ). Opera Botanica 104
  • ANDERBERG, A.A. 1994. Tribes Inuleae , Plucheeae , Gnaphalieae . In K. Bremer, Asteraceae , cladistics and classification . Timber Press, Portland, Oregon
  • HARVEY, W.H. 1865. Compositae . Flora capensis 3
  • LEVYNS, M.R. 1948. Some changes in nomenclature, IV. Journal of South African Botany 14
  • LINNAEUS, C. VON. 1771. Mantissa plantarum 2. Laurentius Salvius, Stockholm