e-Key <span id="jodit_selection_marker_1710237716690_3042241257615377" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - H<span id="jodit_selection_marker_1710237716690_29437798131570303" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>ertia
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Asteraceae - Senecioneae - Hertia Less.

Description:

  • Shrublets or shrubs
  • Leaves alternate, entire to serrate, sometimes decurrent, fleshy, glabrous
  • Capitula radiate or disciform, several-flowered, paniculate-corymbose or solitary, pedunculate to sessile
  • Involucre ecalyculate, campanulate to tubular; bracts in 1 row, usually connate below
  • Receptacle flat, epaleate
  • Marginal and ray florets female, fertile; corolla yellow, shorter than ovary, faintly toothed or with short lamina or with linear-oblong, 3-toothed lamina ± as long as tube
  • Disc florets functionally male; corolla yellow, tubular, widened above, ribbed, glabrous, with 5 ovate lobes
  • Anthers ecalcarate and ecaudate or faintly sagittate at base; with ovate, apical appendage; endothecial tissue radial
  • Style terete, divided, with oblong-linear, obtuse or truncate branches
  • Cypselas ellipsoid-oblong, mostly densely pubescent
  • Pappus of many delicate bristles
  • x = 10

Nomenclature:

  • Hertia Less.
    • Lessing: 94 (1831)
    • Kuntze: 344 (1891)
    • Phillips: 831 (1951)
    • Merxmüller: 99 (1967)
    • Bremer: 503 (1994)
    • Herman: 192 (1998)
  • Doria Less.
    • Harvey: 320 (1865)

Distribution & Notes:

  • Global: Species ± 10, Africa and Southwest Asia
  • Southern Africa: Species 5, widespread but absent from Botswana, Northern Province, Gauteng, Mpumalanga, Swaziland and KwaZulu-Natal

References:

  • BREMER, K. 1994. Asteraceae, cladistics & classification. Timber Press, Portland, Oregon
  • HARVEY, W.H. 1865. Compositae. Flora capensis 3
  • HERMAN, P.P.J. 1998. Asteraceae. Key to the species of the genus Hertia in southern Africa. Bothalia 28,2
  • KUNTZE, C.E.O. 1891. Compositae. Revisio generum plantarum. Vol.1. Charles Klincksieck, Paris
  • LESSING, C.F. 1831. Synanthereae Rich. Linnaea 6
  • MERXMÜLLER, H. 1967. Asteraceae. Prodromus einer Flora von Südwestafrika 139
  • PHILLIPS, E.P. 1951. The genera of South African flowering plants, edn 2. Memoirs of the Botanical Survey of South Africa No. 25

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