e-Key v3 - Erepsia
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Mesembryanthemaceae - Ruschioideae - Lampranthus Group - Erepsia N.E.Br.

Description :

  • Shrubs or shrublets, erect or decumbent, often branching from the base; stems smooth
  • Leaves acutely 3-angled, always with mucro, ± smooth, with a thin wax layer, often with hyaline dots
  • Flowers in many-flowered inflorescences, sometimes reduced to single flowers, sometimes almost sessile; often staying open day and night
  • Sepals 5
  • Petals free, ± linear but spoon-shaped in E. pillansii (Kensit) Liede, white, pink or puce
  • Stamens arising from inner surface or top of calyx tube, either partly or completely covered by staminodes
  • Nectary a series of small teeth in a continuous ring or rarely in groups of five
  • Ovary concave on top, forming an hypanthium with stamens bending down into it; placentas parietal; stigmas 5(9-13), very small, ± narrowly conical to almost globular
  • Fruit a capsule of ± Lampranthus type, usually 5-locular, rarely 9-13-locular, woody, base funnel-shaped; expanding keels ending in awns; valve wings variable; covering membranes with lateral-marginal closing ledges; closing bodies 0
  • Seeds large (0.9-1.6 mm long), dark brown, surface rough
  • x = 9 (1 report)
  • Flowering in summer
  • Distinguishing characters :
    • Shrubs with sharp-tipped leaves
    • Flowers with distinct hypanthium into which stamens bend

Nomenclature:

  • Erepsia N.E.Br.
    • Brown: 433 (1925)
    • Herre: 150 (1971)
    • Liede: 391 (1989)
    • Liede: 1 (1990)
    • Hartmann: 44 (1998)
    • Smith et al.: 322 (1998)
  • Kensitia Fedde
    • Fedde: 11 (1940)
    • Herre: 186 (1971)
  • Piquetia N.E.Br.
    • Brown: 433 (1925) not of H.Hallier (1921)
  • Semnanthe N.E.Br.
    • Brown: 12 (1927)
    • Herre: 284 (1971)

Distribution & Notes:

  • Southern Africa : Species 28, mainly found in the winter-rainfall area of the Western Cape, with an outlier around Port Elizabeth in the Eastern Cape

References:

  • BROWN, N.E. 1925. Mesembryanthemum and some new genera separated from it. Gardeners' Chronicle 78
  • BROWN, N.E. 1927. Mesembryanthemum and some new genera separated from it. Gardeners' Chronicle 81
  • FEDDE, F. 1940. Nomenklatorische Notizen. 1. Repertorium specierum novarum regni vegetabilis 48
  • HARTMANN, H.E.K. 1998. New combinations in Ruschioideae , based on studies in Ruschia ( Aizoaceae ). Bradleya 16
  • HERRE, H. 1971. The genera of the Mesembryanthemaceae : 150, 186, 284. Tafelberg, Cape Town
  • LIEDE, S. 1989. Untersuchungen zum Merkmalsbestand und zur Taxonomie der 'Erepsiinae' ( Mesembryanthemaceae ). Beiträge zur Biologie der Pflanzen 64
  • LIEDE, S. 1990. Untersuchungen zur Ökologie der Gattung Erepsia N.E.Br. ( Mesembryanthemaceae ). Beiträge zur Biologie der Pflanzen 65
  • 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