e-Key <span id="jodit_selection_marker_1706003414928_3542705154340329" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Am<span id="jodit_selection_marker_1706003414928_3800955297017041" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>ellus
SANBI Flora Keys Logo
Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Asteraceae - Astereae - Amellus L.

Description:

  • Annual or perennial herbs or small subshrubs, branched, thickly hairy
  • Leaves alternate or sometimes lower ones opposite, entire or toothed, linear to oblanceolate or spathulate, subsessile, both sides strigillose or canescent
  • Capitula radiate, disciform or discoid, solitary, on axillary or terminal, rarely bracteate peduncles
  • Involucre hemispherical to campanulate; bracts imbricate, in 2-7 rows, with membranous margins, tomentose or pilose
  • Receptacle with linear or linear-lanceolate or club-shaped paleae, or epaleate
  • Ray florets sometimes reduced or 0, female, in 1 row; corolla blue, purple or white; tube cylindric, glandular below, produced into oblong, 3-toothed lamina
  • Style with 2 long branches
  • Staminodia sometimes present
  • Disc florets bisexual and fertile; corolla yellow or white, sometimes flushed reddish purple; tube cylindric below, expanded above or tube expanded from base, 5-lobed, laxly glandular
  • Style branches with narrowly to broadly triangular appendages
  • Anthers ecalcarate and ecaudate, with long triangular, apical appendage
  • Cypselas obovate, with 2 or more marginal veins, light brown, greyish white or white, hairy; cypselas of ray florets often glabrescent and hairy only on margins
  • Pappus almost always consisting of a row of caducous, barbellate bristles and a row of persistent scales
  • x = 8 (6, 9)

Nomenclature:

  • Amellus L.
    • Linnaeus: 1225 (1759)
    • Harvey: 61 (1865)
    • Merxmüller: 20 (1967)
    • Rommel: 584 (1977)
    • Bremer: 410 (1994)
  • Susanna E.Phillips
    • Phillips: 17 (1950)

Distribution & Notes:

  • Southern Africa: Species 12, Namibia, Botswana, Free State, Northern, Western and Eastern Cape

References:

  • BREMER, K. 1994. Asteraceae, cladistics & classification. Timber Press, Portland, Oregon
  • HARVEY, W.H. 1865. Compositae. Flora capensis 3
  • LINNAEUS, C. VON. 1759. Systema naturae 2 (edn 10). Theodor Haak, Leiden
  • MERXMÜLLER, H. 1967. Asteraceae. Prodromus einer Flora von Südwestafrika 139
  • PHILLIPS, E.P. 1950. Descriptions and changes of name. Journal of South African Botany 16
  • ROMMEL, A. 1977. Die Gattung Amellus L. (Asteraceae-Astereae). Mitteilungen der Botanischen Staatssammlung München 13