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

Asteraceae - Plucheeae - Laggera Sch.Bip. ex Benth.

Description :

  • Herbs, aromatic; stem with resin ducts
  • Leaves alternate, dentate, decurrent, hairy
  • Capitula disciform, terminal, few to many together, often in large, loose synflorescence; flowers mauve, pink or yellow
  • Receptacle flat, epaleate
  • Involucral bracts narrow, often squarrose
  • Marginal florets female; corolla filiform, 3-lobed
  • Disc florets bisexual, 4- or 5-lobed
  • Anthers ecaudate, calcarate; endothecial tissue radial
  • Style bifid; style branches with obtuse sweeping hairs reaching below the furcation
  • Cypselas distinct, stout, ellipsoid, without resin ducts, with straight hairs
  • Pappus of free, barbellate, capillary bristles in 1 row; each bristle with adpressed teeth
  • x = 5 (9) (polyploidy, B-chromosomes - 1 report)

Nomenclature:

  • Laggera Sch.Bip. ex Benth.
    • Bentham: 290 (1873)
    • Merxmüller: 107 (1967)
    • Anderberg: 161 (1991)
    • Anderberg: 300 (1994)

Distribution & Notes:

  • Global : Species 17; tropical Africa, Arabian Peninsula, Asia
  • Southern Africa : Species 2: Laggera crispata (Vahl) Hepper & Wood and L. decurrens (Vahl) Hepper & Wood, widespread but absent from Western Cape

References:

  • ANDERBERG, A.A. 1991. Taxonomy and phylogeny of the tribe Plucheeae ( Asteraceae ). Plant Systematics and Evolution 176
  • ANDERBERG, A.A. 1994. Tribes Inuleae , Plucheeae , Gnaphalieae . In K. Bremer, Asteraceae , cladistics and classification . Timber Press, Portland, Oregon
  • BENTHAM, G. 1873. Compositae . In G. Bentham & J.D. Hooker, Genera Plantarum 2. Lovell Reeve & Co., London
  • MERXMÜLLER, H. 1967. Asteraceae . Prodromus einer Flora von Südwestafrika 139