e-Key <span id="jodit_selection_marker_1707295548303_361130092096539" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Caloste<span id="jodit_selection_marker_1707295548304_18787202453288576" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>phane
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Asteraceae - Inuleae - Calostephane Benth.

Description:

  • Herbaceous plants, often erect annuals
  • Leaves alternate, sessile or petiolate, sometimes decurrent in long wings, linear to lanceolate, margins dentate
  • Capitula either radiate or discoid, solitary on long peduncles
  • Involucre campanulate; bracts in 2 rows, linear, usually ciliate, strigose or glandular
  • Receptacle flat, epaleate, foveolate
  • Ray florets (if present) female; corolla yellow, strap-shaped, 3-lobed
  • Disc florets bisexual, fertile; corolla yellow, tube widened gradually upwards, glandular-hairy, 5-lobed
  • Anthers minutely calcarate, caudate; with lanceolate apical appendage; endothecial tissue polarised
  • Style branches of female florets linear, obtuse; of bisexual florets linear, subacute; with acute sweeping hairs not reaching furcation
  • Cypselas oblong, subterete, ribbed, glands alternating with ribs
  • Pappus double; outer row of 5 small obovate, membranous scales; inner row of bristles with broad, membranous wings above middle; or of scales similar to those of outer rows

Nomenclature:

  • Calostephane Benth.
    • Bentham: 10, t. 1111 (1876)
    • Merxmüller: 37 (1967)
    • Hilliard: 279 (1977)
    • Anderberg: 89 (1991)
    • Anderberg: 285 (1994)

Distribution & Notes:

  • Global: Species 6, tropical Africa and Madagascar
  • Southern Africa: Species 2: Calostephane divaricata Benth. and C. marlothiana O.Hoffm., Namibia, Botswana, Northern Province, Swaziland and KwaZulu-Natal

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
  • BENTHAM, G. 1876. Hooker's Icones Plantarum 12
  • HILLIARD, O.M. 1977. Compositae in Natal. University of Natal Press, Pietermaritzburg
  • MERXMÜLLER, H. 1967. Asteraceae. Prodromus einer Flora von Südwestafrika 139