e-Key <span id="jodit_selection_marker_1709035109571_44659649111106225" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Dracop<span id="jodit_selection_marker_1709035109571_9942486735586886" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>hilus
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Mesembryanthemaceae - Ruschioideae - Dracophilus Group - Dracophilus (Schwantes) Dinter & Schwantes

Description:

  • Compact, dwarf perennials forming dense, low clumps, up to ± 300 mm high
  • Leaves opposite, trigonous, united at bases, ± 50 mm long and 15 mm broad, flattish above, grey to blue-green, rarely dentate on keel and margins; epidermis with rounded papillae of different sizes, largest ones over subhypodermal tannin idioblasts
  • Flowers terminal, solitary, ± 30 mm in diameter, on bibracteate pedicels ± 25 mm long; opening late in afternoon well into night, honey-scented
  • Sepals 5, nearly equal, obtuse
  • Petals 2- or 3-seriate, free, nearly as long as sepals, with reflexed tips, white to pink
  • Stamens collected in a central cone; filaments hairy at base
  • Nectary a crenulate ring
  • Ovary depressed, with raised centre; nectar glands annular, crenulate; placentas parietal; stigmas 8-11(14), subulate, semipersistent, recurved
  • Fruit a 8-11(14)-locular capsule, of Titanopsis type; closing bodies absent; valve wings present, large; expanding keels parallel, lacerate, ending in an awn; covering membranes present, covering two-thirds of locule, flattish, translucent
  • Seeds pear-shaped, greyish brown
  • Flowering all year round
  • Distinguishing characters:
    • Perennials with smooth or slightly toothed, finely textured, grey-green leaves
    • Sepals 5 (Juttadinteria has 4); pedicels bracteate
    • Flowers opening in the evening
    • Fruit with covering membranes

Nomenclature:

  • Dracophilus (Schwantes) Dinter & Schwantes
    • Schwantes: 187 (1927)
    • Walgate: 171 (1939)
    • Herre: 140 (1971)
    • Smith et al.: 140 (1998)
  • Juttadinteria subgen. Dracophilus Schwantes
    • Schwantes: 183 (1926)

Distribution & Notes:

  • Southern Africa: Species 4, arid areas from Lüderitz in SW Namibia, southwards to the northern part of the Richtersveld in the Northern Cape

References:

  • HERRE, H. 1971. The genera of the Mesembryanthemaceae. Tafelberg, Cape Town
  • SCHWANTES, G. 1926. Zur Systematik der Mesembrianthemen. Zeitschrift für Sukkulentenkunde 2
  • SCHWANTES, G. 1927. Einige neue Mesembrianthemaceen. Möllers Deutsche Gärtner-Zeitung 42
  • 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
  • WALGATE, 1939. A revision of Juttadinteria Schwant., Dracophilus Dint. et Schwant., and Namibia Dint. et Schwant. In H.M.L. Bolus, Notes on Mesembryanthemum and allied genera. 3. University of Cape Town, Cape Town