e-Key <span id="jodit_selection_marker_1710507502358_26980584339832236" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Lasiosp<span id="jodit_selection_marker_1710507502358_47667952671651515" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>ermum
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Asteraceae - Anthemideae - Lasiospermum Lag.

Description:

  • Annual or perennial herbs, sometimes decumbent, rooting at nodes
  • Leaves alternate, long pilose to glabrous, pinnatisect to bipinnatisect, rarely entire
  • Capitula radiate or discoid, pedunculate, solitary or paniculate, terminal
  • Involucral bracts in 2-4 rows, narrowly oblong to elliptic to almost quadrate, with membranous margin and apex, long pilose or felted to glabrous
  • Receptacle flat or convex, paleate; paleae membranous
  • Ray florets when present, few, female; corolla white or reddish; tube sometimes flattened, with short or long lamina
  • Disc florets numerous, corolla sometimes reddish; tube campanulate above, with 5 ovate lobes
  • Anthers ecalcarate and ecaudate; with lanceolate apical appendage; endothecial tissue polarised
  • Style terete, discoid at base, with linear, truncate branches
  • Cypselas oblong-ovate, slightly flattened, smooth, dark yellow-brown, copiously woolly
  • Pappus 0
  • x = 9, 10

Nomenclature:

  • Lasiospermum Lag.
    • Lagasca: 31 (1816)
    • Harvey: 153 (1865)
    • Müller: 124 (1988)
    • Bremer & Humphries: 94 (1993)
    • Bremer: 451 (1994)

Distribution & Notes:

  • Global: Species 4, Egypt and southern Africa
  • Southern Africa: Species 4, Namibia, North-West, Gauteng, Free State, Lesotho, Northern, Western and Eastern Cape

References:

  • BREMER, K. 1994. Asteraceae, cladistics & classification. Timber Press, Portland, Oregon
  • BREMER, K. & HUMPHRIES, C. 1993. Generic monograph of the Asteraceae-Anthemideae. Bulletin of the Natural History Museum, Botany Series 23
  • HARVEY, W.H. 1865. Compositae. Flora capensis 3
  • LAGASCA, S.M. 1816. Genera et species plantarum. Typographia regia, Madrid
  • MÜLLER, M.A.N. 1988. 'n Morfologiese en taksonomiese studie van die genusse Lasiospermum Lag. en Eriocephalus L. (Asteraceae) in suidelike Afrika. Unpublished Ph.D. thesis, University of Stellenbosch, Stellenbosch