e-Key <span id="jodit_selection_marker_1709285475436_7052515687478862" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Ebrac<span id="jodit_selection_marker_1709285475436_07898238256914003" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>teola
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Mesembryanthemaceae - Ruschioideae - Ruschia Group - Ebracteola Dinter & Schwantes

Description:

  • Compact, tufted, dwarf, much-branched perennials with thickened roots
  • Leaves opposite, connate at base, trigonous to triquetrous, narrowing towards the apiculate apex, 30(40 mm long, 10 mm wide, light greyish green to blue-green becoming tinged with red in sunlight, often with dense, black or green dots, surface ± smooth; stomata only slightly sunken
  • Flowers 1(-3), terminal, shortly pedicellate, pedicels seemingly without bracts but bracts borne low down and difficult to see when whithered; up to ± 25 mm in diameter; opening late morning, closing evening
  • Sepals 5, free
  • Petals ± 1-seriate, purple to light purple with colour more intense at tips, or pure white
  • Stamens with linear filaments; staminodes surrounding stamens in a central cone
  • Nectary a crenulate ring
  • Ovary with placentas parietal; stigmas 5, subulate, ± plumose
  • Fruit a 5-locular capsule, persisting for many years on plants; broad expanding keels and broad valve wings indicate a relation to Titanopsis type of fruit, but deep locules and hook-shaped closing bodies agree with Ruschia type; valve wings narrow; expanding keels broad, sheet-like, toothed; covering membranes stiff; closing bodies small, often crenulate as in Hereroa
  • Seeds subglobose, smooth, whitish
  • Flowering spring and summer (E. wilmaniae (L.Bolus) Glen) or throughout the year
  • Distinguishing characters:
    • Tufted perennials with thickened rootstock
    • Leaves bluish green
    • Flowers purple fading to pink or white towards centre, or white

Nomenclature:

  • Ebracteola Dinter & Schwantes
    • Schwantes: 15, 24 (1927)
    • Friedrich: 44 (1970)
    • Herre: 146 (1971)
    • Glen: 203 (1986)
    • Hartmann: 29 (1996)
    • Smith et al.: 212 (1998)

Distribution & Notes:

  • Southern Africa: Species 4, horseshoe-shaped distribution extending from central Namibia through the Northern Cape to central South Africa. Recent fieldwork has extended the distribution into the North-West, Free State and Gauteng

References:

  • FRIEDRICH, H.C. 1970. Aizoaceae. Prodromus einer Flora von Südwestafrika 27
  • GLEN, H.F. 1986. Numerical taxonomic studies in the subtribe Ruschiinae (Mesembryanthemaceae) - Astridia, Acrodon and Ebracteola. Bothalia 16
  • HARTMANN, H.E.K. 1996. Miscellaneous taxonomic notes on Aizoaceae. Bradleya 14
  • HERRE, H. 1971. The genera of the Mesembryanthemaceae. Tafelberg, Cape Town
  • SCHWANTES, G. 1927. Zur Systematik der Mesembrianthemen. Zeitschrift für Sukkulentenkunde 3
  • SMITH, G.F., CHESSELET, P., VAN JAARSVELD, E.J., HARTMANN, H., HAMMER, S., VAN WYK, B-.E., BURGOYNE, P., KLAK, C. & KURZWEIL, H. 1998. Mesembs of the world. Briza, Pretoria