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

DICOTYLEDON - ASTERIDAE - ASTERALES - Asteraceae - Inuleae

Compiled by P.P.J. Herman, E. Retief, M. Koekemoer and W.G. Welman

Description :

  • Herbs, subshrubs or shrubs, occasionally with winged stems
  • Leaves generally alternate, sometimes opposite, entire to pinnatifid or pinnatisect, serrate or dentate, often glandular and hairy, hairs of type A (multiseptate hairs with short cells)
  • Capitula radiate, disciform or discoid, solitary, corymbose or paniculate
  • Involucral bracts imbricate in several rows, chartaceous or herbaceous
  • Receptacle flat or convex, usually smooth, sometimes honeycombed, generally epaleate, rarely paleate
  • Ray florets female, in 1, 2 or rarely several rows, lamina generally yellow or whitish and well-developed, but sometimes very short or 0; occasionally outer florets filiform and sometimes pink to crimson; adaxial epidermal cells of ray florets elongated with rugose or longitudinally striate cuticle
  • Disc florets bisexual, yellow, sometimes purple or white, generally with 5 short lobes; corolla epidermal cells with straight walls
  • Anthers ecalcarate or calcarate, caudate, tails long and branched or short and ± unbranched; endothecial tissue generally of elongate cells, radial or polarised
  • Style with oblong to linear, rounded style branches and hairs reaching to bifurcation, rarely below bifurcation; hairs acute or rarely obtuse; stigmatic areas in 2 apically confluent lines
  • Cypselas ellipsoid, turbinate or triquetrous, often with ribs, glabrous or with elongated not myxogenic twin hairs; cypsela epidermis sometimes with 1 elongated calcium oxalate crystal in each cell
  • Pappus of scales only or composed of ± free, barbellate, rarely plumose, capillary bristles in 1 row, with or without outer row of small scales or rarely 0

Nomenclature:

  • Inuleae
    • Cassini: 193 (1819)
    • Anderberg: 85 (1991)
    • Anderberg: 282 (1994)

Distribution & Notes:

  • Global : Genera 38, mainly northern hemisphere, particularly Europe, North Africa, Arabian Peninsula, Middle East and Central Asia; few genera in tropical and southern Africa
  • Southern Africa : Genera 12, species 47

References:

  • ANDERBERG, A.A. 1991. Taxonomy and phylogeny of the tribe Inuleae ( 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. 1819. In Journal de physique, de chimie, d'histoire naturelle et des artes 88