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

Asteraceae - Gnaphalieae - Oreoleysera K.Bremer

Description :

  • Compact woody perennials, forming dense tufts
  • Leaves alternate, sessile, narrowly oblong, flattened, greyish tomentose on both surfaces, eglandular, margin entire
  • Capitula radiate, solitary, terminal on long leafless peduncles
  • Involucral bracts with lanceolate laminas
  • Receptacle flat, epaleate
  • Ray florets female, in one row, fewer than disc florets, yellow with purple bands dorsally; cypselas and pappus as in disc florets
  • Disc florets perfect, yellow, glandular-hairy
  • Anthers ecalcarate with short tails; apical appendage acute; endothecial tissue polarised
  • Style branches truncate with obtuse sweeping hairs apically
  • Cypselas rod-like with 5 vascular bundles, moderately hairy with elongated twin hairs
  • Pappus of free, barbellate, capillary bristles in one row with an outer row of very narrow scales

Nomenclature:

  • Oreoleysera K.Bremer
    • Bremer: 450 (1978)
    • Anderberg & Bremer: 1069 (1991)
    • Anderberg: 67 (1991)
    • Anderberg: 333 (1994)

Distribution & Notes:

  • Southern Africa : Monotypic: Oreoleysera montana (Bolus) K.Bremer, endemic to Western 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
  • ANDERBERG, A.A. & BREMER, K. 1991. Parsimony analysis and cladistic reclassification of the Relhania generic group ( Asteraceae - Gnaphalieae ). Annals of the Missouri Botanical Garden 78
  • BREMER, K. 1978. Oreoleysera and Athrixia , new and old South African genera of the Compositae . Botaniska Notiser 131