e-Key v3 - Esterhuysenia
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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 - Esterhuysenia L.Bolus

Description :

  • Low shrublets, 200-300 mm high, with smooth, reddish stems from which a reddish powder may flake off; roots fibrous
  • Leaves decussate, always equal and similar, ascending or spreading, lower side rounded, upper side flattened, apiculate, up to 12 mm long, minutely tuberculate, often tinged with red
  • Flowers terminal, solitary, up to 20 mm in diameter, pedicellate
  • Sepals 5
  • Petals magenta
  • Stamens papillate at base; staminodes 0
  • Nectary a crenulate ring
  • Ovary slightly convex on top; placentas parietal; stigmas 5
  • Fruit a 5-locular capsule, of ± Lampranthus type, obconical, woody; expanding keels parallel at base, divergent at points; valve wings very narrow, often absent in old capsules; covering membranes flexible, ± covering the locules; closing bodies 0
  • Seeds D-shaped, ± 1.2 mm long, brown, testa rough
  • Flowering spring and summer
  • Distinguishing characters :
    • Dwarf shrublets with reddish stems
    • Leaves often red-tipped
    • Fruit flat on top, valve wings very narrow, often absent in old capsules

Nomenclature:

  • Esterhuysenia L.Bolus
    • Bolus: 308 (1967)
    • Herre: 152 (1971)
    • Hartmann: 44 (1998)
    • Smith et al.: 280 (1998)

Distribution & Notes:

  • Southern Africa : Species 4, in rocky places often on high mountain peaks near Caledon, Ceres, Robertson and Worcester in the winter-rainfall region of the Western Cape

References:

  • BOLUS, H.M.L. 1967. Notes on Mesembryanthemum and allied genera. Journal of South African Botany 33
  • 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 . Tafelberg, Cape Town
  • 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