e-Key <span id="jodit_selection_marker_1707207484254_0680900929969046" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Ber<span id="jodit_selection_marker_1707207484254_2183212759907871" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>kheya
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Asteraceae - Arctoteae - Berkheya Ehrh.

Description:

  • Perennial herbs or subshrubs, sometimes cobwebby or woolly
  • Leaves alternate or radical, rarely opposite, sometimes decurrent, subentire, toothed, pinnatifid or pinnatisect, teeth spinescent
  • Capitula radiate or discoid, several- to many-flowered, terminal on single stems or on branchlets, rarely axillary, rarely corymbose or umbellate
  • Involucre campanulate; bracts in few to many rows, connate at base, tips and often margins spiny
  • Receptacle flat, honeycombed fimbrilliferous
  • Ray florets neuter, in single row, strap-shaped
  • Disc florets bisexual, fertile or sometimes inner ones male, tubular, dilated above, deeply 5-lobed
  • Anthers linear, sagittate at base; with lanceolate, apical appendage
  • Style terete, undivided or with linear, obtuse branches
  • Cypselas ± obovoid, ribbed, pilose or glandular, pubescent to glabrous
  • Pappus of short or long scales or bristles
  • x = 7, 8

Nomenclature:

  • Berkheya Ehrh.
    • Ehrhart: 137 (1788)
    • Harvey: 501 (1865)
    • Oliver & Hiern: 428 (1877)
    • Phillips: 847 (1951)
    • Roessler: 104 (1959)
    • Hilliard: 547 (1977)
    • Bremer: 261 (1994)
  • Crocodilodes Adans.
    • Adanson: 127 (1763)
  • Stephanocoma Less.
    • Lessing: 56 (1832)
  • Stobaea Thunb.
    • Thunberg: 141 (1800)

Distribution & Notes:

  • Global: Species 75, Africa
  • Southern Africa: Species 71, widespread

References:

  • ADANSON, M. 1763. Familles des Plantes 2. Vincent, Paris
  • BREMER, K. 1994. Asteraceae, cladistics & classification. Timber Press, Portland, Oregon
  • EHRHART, J.F. 1788. Beiträge zur Naturkunde 3. Schmidtische Buchhandlung, Hannover & Osnabrück
  • HARVEY, W.H. 1865. Compositae. Flora capensis 3
  • HILLIARD, O.M. 1977. Compositae in Natal. University of Natal Press, Pietermaritzburg
  • LESSING, C.F. 1832. Synopsis generum Compositarum. Duncker & Humblot, Berlin
  • OLIVER, D & HIERN, W.P. 1877. Compositae. Flora of tropical Africa 3
  • PHILLIPS, E.P. 1951. The genera of South African flowering plants, edn 2. Memoirs of the Botanical Survey of South Africa No. 25
  • ROESSLER, H. 1959. Revision der Arctotideae - Gorteriinae (Compositae). Mitteilungen der Botanischen Staatssamlung München 3
  • THUNBERG, C.P. 1800. Syngenesia. Prodromus Plantarum Capensium Pars 2. J. Edman, Uppsala