e-Key <span id="jodit_selection_marker_1709293947795_9129905487336853" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Erl<span id="jodit_selection_marker_1709293947795_46472287086504216" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>angea
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Asteraceae - Vernonieae - Erlangea Sch.Bip.

Description:

  • Annual or perennial, erect herbs
  • Leaves alternate, sessile or subsessile; blade ovate-lanceolate to linear-oblong, crenate, serrate or almost entire, minutely pellucid-dotted, glabrous or hairy
  • Capitula discoid, with many florets, broadly campanulate to hemispheric, rather long-pedunculate, in lax terminal cymes
  • Involucre with bracts in ± 3 rows
  • Receptacle minutely reticulate-foveolate, ± plane
  • Corolla purple, narrowly funnel-shaped, 5-dentate, lobes with apical tuft of hairs
  • Anthers shortly sagittate; with lanceolate, membranous apical appendage
  • Style branches filiform, subulate, hirsute, exserted
  • Cypselas 4- or 5-angled, 4- or 5-ribbed, oblong-obovoid, rounded at apex; pitted and glandular between ribs, ± pilose on ribs
  • Pappus of few shortly hairy, caducous bristles
  • x = 10

Nomenclature:

  • Erlangea Sch.Bip.
    • Schultz 'Bipontinus': 34 (1853)
    • Oliver & Hiern: 265 (1877)
    • Merxmüller: 62 (1967)
    • Wild & Pope: 362 (1977)
    • Bremer: 220 (1994)
  • Haarera Hutch. & E.A.Bruce
    • Hutchinson & Bruce: 96 (1932)

Distribution & Notes:

  • Global: Species ± 6, tropical Africa
  • Southern Africa: Species 2: Erlangea misera (Oliv. & Hiern) S.Moore, Namibia, Botswana, North-West, Northern Province and Northern Cape and E. remifolia Wild & Pope, Botswana

References:

  • BREMER, K. 1994. Asteraceae, cladistics & classification. Timber Press, Portland, Oregon
  • HUTCHINSON, J. & BRUCE, E.A. 1932. Tropical African plants: IX. Kew Bulletin 1932
  • MERXMÜLLER, H. 1967. Asteraceae. Prodromus einer Flora von Südwestafrika 139
  • OLIVER, D & HIERN, W.P. 1877. Compositae. Flora of tropical Africa 3
  • SCHULTZ, C.H. BIPONTINUS. 1853. Flora 36
  • WILD, H. & POPE, G.V. 1977. The Compositae of the Flora zambesiaca area, 7. Vernonieae (excluding Vernonia Schreb.). Kirkia 10