e-Key <span id="jodit_selection_marker_1710506798661_3712120189657877" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Langeb<span id="jodit_selection_marker_1710506798661_6864054753348809" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>ergia
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Asteraceae - Gnaphalieae - Langebergia Anderb.

Description:

  • Shrubs
  • Leaves alternate, sessile, greyish tomentose (hair type B), eglandular, margin flat, entire
  • Capitula disciform, in terminal flat-topped corymbs
  • Involucral bracts papery, white, opaque; stereome undivided
  • Receptacle flat, epaleate
  • Female florets purple, pistillate, filiform, fewer than disc florets
  • Disc florets bisexual or functionally male; corolla purple, lobes erect
  • Anthers ecalcarate, caudate with short tails; apical appendage flat, as wide as thecae; endothecial tissue polarised
  • Style bifid; style branches truncate with obtuse sweeping hairs apically; stigmatic surfaces separated
  • Cypselas ellipsoid, with short, clavate, nonmyxogenic twin hairs; epidermis smooth
  • Pappus of free, barbellate, capillary bristles in 1 row, basally with patent cilia; apical cells clavate, white, opaque

Nomenclature:

  • Langebergia Anderb.
    • Anderberg: 93 (1991)
    • Nordenstam: 406 (1996)
  • Petalacte D.Don section Amphilasia DC.
    • Harvey: 288 (1865)

Distribution & Notes:

  • Southern Africa: Monotypic: Langebergia canescens (DC.) Anderb., endemic, Western Cape

References:

  • ANDERBERG, A.A. 1991. Taxonomy and phylogeny of the tribe Gnaphalieae (Asteraceae). Opera Botanica 104
  • HARVEY, W.H. 1865. Compositae. Flora capensis 3
  • NORDENSTAM, B. 1996. Anderbergia B.Nord., a new genus of everlastings (Compositae-Gnaphalieae) from the Cape Province. Annalen des Naturhistorischen Museums in Wien 98B Suppl.

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