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

Asteraceae - Plucheeae - Pluchea Cass.

Description :

  • Subshrubs or shrubs, rarely perennial herbs, hairy or sometimes glutinous
  • Leaves alternate, dentate to serrate or entire, sessile or subsessile, not decurrent
  • Capitula disciform, mostly in leafless, terminal, corymbose cymes, rarely few or solitary; flowers white, yellow or purplish
  • Involucre ovoid, broadly campanulate or subhemispherical; bracts in few to many rows
  • Receptacle concave or convex, sometimes honeycombed, epaleate
  • Marginal florets female, filiform, 3-lobed, in 1 to few rows
  • Style entire or almost undivided or sometimes divided; style branches with obtuse sweeping hairs reaching below the furcation
  • Disc florets functionally male; corolla tubular, widening upwards, glabrous, with 5 lobes, glandular on margins
  • Anthers calcarate and caudate; endothecial tissue radial
  • Cypselas cylindric, hairy, without resin ducts
  • Pappus of free, barbellate, capillary bristles in 1 row, each bristle with patent teeth
  • x = 10 (polyploidy)

Nomenclature:

  • Pluchea Cass.
    • Cassini: 31 (1817)
    • Wild: 132 (1969)
    • Hilliard: 116 (1977)
    • Anderberg: 164 (1991)
    • Anderberg: 301 (1994)

Distribution & Notes:

  • Global : Species ± 80, Asia, America, Africa and Australia
  • Southern Africa : Species 4, Namibia, Botswana, Northern Province, Mpumalanga, Swaziland and KwaZulu-Natal

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
  • CASSINI, A.H.G. DE. 1817. Aperçu des genres ou sous-genres nouveaux formés par M. Henri Cassini dans la famille des Synanthérées. Bulletin des sciences de la Société Philomatique de Paris 3
  • HILLIARD, O.M. 1977. Compositae in Natal . University of Natal Press, Pietermaritzburg
  • WILD, H. 1969. The Compositae of the Flora zambesiaca area, 2. Inuleae . Kirkia 7