e-Key <span id="jodit_selection_marker_1709024337897_6269218836331325" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Dactyl<span id="jodit_selection_marker_1709024337897_44222851788046813" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>opsis
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Mesembryanthemaceae - Mesembryanthemoideae - Dactylopsis N.E.Br.

Description:

  • Compact, dwarf, highly succulent perennials forming clumps with age; roots thickened
  • Leaves alternate, 2 or 3 per branch, finger-like, cylindrical with long sheaths completely enveloping internodes, withering completely into a membranous covering protecting young buds
  • Flowers terminal, solitary, sessile, 10-20 mm in diameter, remaining continuously open for ± 3 weeks
  • Sepals 5, equal, forming a short tube above ovary
  • Petals white, stiff, numerous, in several series, merging into staminodes
  • Stamens numerous, linear, arising from rim of ovary and united into short tube; pollen punctate-foveolate, microspinulose
  • Ovary half-superior; placentas axile
  • Nectary of 5 separate grooves
  • Fruit a capsule, 5-locular, of Mesembryanthemum type; expanding keels parallel, diverging slightly distally; valves with membranous marginal wings or flaps
  • Seeds smooth, brown
  • x = 9
  • Flowering from spring to early summer
  • Distinguishing characters:
    • Compact, highly succulent perennials
    • Leaves finger-like, cylindrical
    • Flowers solitary, terminal, remaining open for ± 3 weeks

Nomenclature:

  • Dactylopsis N.E.Br.
    • Brown: 413 (1925)
    • Herre: 124 (1971)
    • Hartmann: 47 (1993)
    • Gerbaulet: 145 (1997)
  • Phyllobolus N.E.Br. in part
    • Smith et al.: 42 (1998)

Distribution & Notes:

  • Southern Africa: Species 2, Vanrhynsdorp and Vredendal districts, Western Cape

References:

  • BROWN, N.E. 1925. Mesembryanthemum and some new genera separated from it. Gardeners' Chronicle 78
  • GERBAULET, M. 1997. Revision of the genus Phyllobolus N.E.Br. (Aizoaceae). Botanische Jahrbücher 119
  • HARTMANN, H.E.K. 1993. Aizoaceae. In K. Kubitzki, J.G. Rohwer & V. Bittrich, The families and genera of vascular plants - Dicotyledons 2. Springer-Verlag, Berlin
  • 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