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

Asteraceae - Gnaphalieae - Planea P.O.Karis

Description :

  • Much-branched shrublets
  • Leaves in fascicles, involute ericoid, twisted at base, up to 5 mm long, puberulous or glabrous, acute, mucronate
  • Capitula discoid, 5-flowered, corymbose
  • Involucral bracts in 8-11 rows, stereome undivided, outermost bracts green, inner ones reddish above stereome, otherwise whitish to entirely white
  • Florets perfect; corolla narrowly cylindrical with 5 erect, narrowly triangular lobes
  • Anthers with long, acute, abaxially concave apical appendage narrowing at base and with margins of short dorsiventrally erect-spreading cells, tails long, much-branched
  • Cypselas (immature) ovoid, covered with twin-hairs; endocarp of ± 10 cell layer thick testa with a marked pallisade-like epidermis of in transverse-section narrowly oblong, semitransparent cells
  • Pappus bristles serrate, distinctly connate at base into an irregular ring, shaft apically barbellate with free or slightly fused, acute, not clavate cells

Nomenclature:

  • Planea P.O.Karis
    • Karis: 32 (1990)
    • Anderberg: 73 (1991)
    • Anderberg: 333 (1994)

Distribution & Notes:

  • Southern Africa : Monotypic: Planea schlechteri (L.Bolus) P.O.Karis is 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
  • KARIS, P.O. 1990. Three new genera of the Asteraceae - Gnaphalieae from the Cape Region. Botanical Journal of the Linnean Society 102